Construction method for 0 # block of double-amplitude prestress continuous box girder

Abstract

The invention relates to the technical field of construction of double-amplitude variable cross-section prestressed continuous box girders, and particularly discloses a construction method of a 0 # block of a double-amplitude prestressed continuous box girder. The method comprises the steps that S1, a support is constructed; s2, elevator cage construction; s3, hanging basket components are installed; s4, 0 # block pouring is conducted; s5, edge protection and construction platform installation; s6, a beam surface channel is constructed; step S7, configuring a beam surface circuit; and S8, 0 # block continuous beam prestress tensioning is carried out. The whole construction process is standardized, so that errors and rework in the construction process are reduced, the construction quality is improved, the cost is controlled, and all construction activities are ensured to be carried out according to a set plan; and meanwhile, the construction efficiency and the construction safety of a project are improved by using various devices and equipment.

Description

Technical Field

[0001] The invention relates to the technical field of construction of double-width variable-section prestressed continuous box girders, and in particular to a construction method for a 0# block of a double-width prestressed continuous box girder. Background Art

[0002] As a common large-span bridge structure, variable-section prestressed concrete double-span continuous box beams are widely used due to their good overall mechanical performance. However, the continuous beam structure is heavy and generally high, involving many high-altitude operations and high risks. Summary of the invention

[0003] The invention provides a construction method for a 0# block of a double-width prestressed continuous box girder, which can overcome certain or some defects of the prior art.

[0004] A construction method for a double-width prestressed continuous box girder 0# block according to the present invention comprises:

[0005] Step S1: Support construction, select the appropriate support mode according to the design of block 0#, and select the full-span steel pipe support for construction when the main pier height is not more than 8m; when the size of the pedestal 110 is too small to meet the full-span steel pipe support directly falling on the pedestal, and the direction of the pedestal is perpendicular or parallel to the direction of the bridge, use the oblique leg steel pipe support for the construction of the continuous box girder block 0# for support construction; when the direction of the pedestal is at a large angle to the direction of the bridge, use the continuous box girder block 0# steel pipe support for support construction;

[0006] Step S2: Ladder cage construction. After the installation of the 0# bracket is completed, the bracket bottom formwork is installed and the bracket is pre-pressed. Before the template is installed, the climbing ladder cage is installed. The climbing ladder cage is provided with a fixing component, which includes a wall connecting piece and a wind rope device. A wall connecting piece is provided every 4m of the height of the climbing ladder cage. When the height of the climbing ladder cage is greater than 6m, a wind rope device is provided on the side away from the pier column;

[0007] Step S3: Installation of hanging basket components, the installation process includes the hoisting of I-beam beams, angle steels, channel steels and other steel components, and during the hoisting process, a hanging basket quick-installation tile for wire rope protection is installed on the steel components;

[0008] Step S4: 0# block casting, perform 0# block casting, and remove the mold after the casting is completed and the strength reaches the standard;

[0009] Step S5: installing edge protection and construction platform, installing edge protection and construction platform, wherein the continuous box beam edge protection work platform is installed on the I-beam crossbeam;

[0010] Step S6: beam surface channel construction, performing beam surface channel construction, wherein a double-width continuous beam surface channel is installed between the left and right continuous beam surfaces;

[0011] Step S7: beam surface circuit configuration, performing beam surface circuit configuration, installing and placing a secondary distribution box between the left and right continuous beam surfaces using a double-width continuous beam surface secondary distribution box installation device;

[0012] Step S8: Prestressing of 0# continuous beam, prestressing operation is performed on 0# continuous beam, wherein the transverse prestressing of 0# block is performed on the movable continuous box beam transverse prestressing windproof working platform.

[0013] Through the present invention, the standardization of the entire construction process helps to reduce errors and rework in the construction process, improve construction quality, control costs, and help ensure that all construction activities are carried out according to the established plan; the use of various devices and equipment improves the construction efficiency and safety of the project.

[0014] Preferably, the 0# steel pipe support of the continuous box girder in step S1 includes a first support body, the first support body includes a plurality of first support assemblies, the first support assembly includes two vertically arranged first vertical columns, a first horizontal cross bar for connecting the two first vertical columns is horizontally arranged between the first vertical columns, a plurality of first reinforcing cross braces connecting the first support assemblies into the first support body are arranged between the first support assemblies, and the first reinforcing cross braces are arranged at an acute angle to the length direction of the pedestal; the two first support bodies are respectively arranged on both sides of the pier, and also include two concrete foundations arranged around the pedestal.

[0015] Through the present invention, when the pedestal cannot be directly constructed with a full-span steel pipe support due to the deviation between its setting direction and line shape and the direction of the main bridge, the problem can be better solved, and the construction is relatively convenient and quick; the design of the first support assembly includes a first vertical column and a first horizontal cross bar, forming a relatively stable frame structure, and at the same time, the first reinforcing cross brace arranged between the first support assemblies can effectively disperse the load to the entire first support body, average the burden of each first support assembly, improve the bearing capacity and stability of the overall structure, and prevent the first support body from being locally damaged due to external forces during construction. The first support body provides high-strength support, can withstand large loads, and ensure stability and safety during bridge construction; the concrete foundation arranged around the pedestal provides a larger area of ​​support for the first support body, further increasing stability.

[0016] Preferably, the inclined-leg steel pipe support for the construction of the 0# block of the continuous box girder in step S1 includes a second support body, the second support body includes a plurality of second support assemblies evenly arranged along the transverse bridge direction, a plurality of second reinforcing cross bars for connecting the second support assemblies into the second support body are arranged between the second support assemblies along the transverse bridge direction, the second support assembly includes two second vertical columns whose lower ends are connected to the top of the pedestal and perpendicular to the upper surface of the pedestal, the second support assembly also includes two inclined columns whose lower ends are connected to the top of the pedestal and inclined along the longitudinal bridge direction away from the pedestal, a plurality of second horizontal columns for connecting the second vertical columns and the inclined columns are arranged horizontally between the second vertical columns and the inclined columns, and the second support assembly is trapezoidal.

[0017] Through the present invention, when the size of the pedestal cannot meet the vertical design of the support, the second support body composed of an inverted trapezoidal second support assembly is used to complete the construction of the continuous box girder block, without pouring additional concrete to meet the construction conditions, thereby reducing the construction cost; the design of the second support assembly includes a second vertical column and an inclined column, forming a trapezoidal structure, and at the same time, by evenly arranging a plurality of second support assemblies along the transverse direction of the bridge and arranging a second reinforcing cross bar between the second support assemblies, the load can be effectively dispersed to the entire support structure, reducing the burden of a single second support assembly, improving the bearing capacity and stability of the overall structure, and preventing the second support body from overturning due to external force during construction; the lower ends of the second vertical columns and the inclined columns are connected to the pedestal to facilitate the transmission of the bearing force to the pedestal, and the pedestal, as a stable foundation, can provide stable support for the second support body, thereby further improving the stability of the overall structure.

[0018] Preferably, the wall connecting parts in step S1 include embedded wall connecting parts embedded in the pier, the embedded wall connecting parts include embedded wall connecting steel plates, a wall connecting screw with an open end and an internal thread is welded at the center of the embedded wall connecting steel plate, a threaded rod with an external thread is provided at the opening of the wall connecting screw, and the threaded rod extends 20 cm from the concrete surface of the pier, the wall connecting parts also include a wall connecting rod provided between the embedded wall connecting parts and the climbing ladder cage, one end of the wall connecting rod is threadedly connected to the threaded rod, and the end of the wall connecting rod away from the embedded wall connecting parts is bolted to the climbing ladder cage.

[0019] Through the present invention, the wall-connecting embedded parts are pre-buried before the pier column concrete is poured, and the subsequent installation of the wall-connecting connecting rod and the pier column only requires threaded connection, which simplifies the installation process on the construction site and improves the construction efficiency. After the pier column construction is completed, the climbing ladder cage is dismantled, and only the threaded rod needs to be removed, and then the surface of the pier column is repaired with concrete, which is more beautiful and practical, ensuring the appearance quality of the pier column concrete, and the threaded rod can be recycled, which is more economical and environmentally friendly.

[0020] Preferably, the wind rope device in step S2 includes concrete anchors arranged around the ladder cage, the concrete anchor is a rectangular parallelepiped and has a metal ring on the upper surface, and a reflective warning paint is provided on the surface of the concrete anchor. The wind rope device also includes a wind rope, one end of which is connected to the metal ring, and the end of the wind rope away from the metal ring is connected to the ladder cage bolt.

[0021] Through the present invention, by arranging concrete anchors around the climbing ladder cage, the climbing ladder cage can be effectively fixed to prevent it from shaking under the action of wind, thereby enhancing the overall stability; the surface of the concrete anchor is provided with a reflective warning paint, which can enhance the visibility of the concrete anchor at night or in low light conditions and reduce the risk of accidents during construction.

[0022] Preferably, in step S3, a quick-installation tile protector for a hanging basket comprises two tile protector bodies arranged opposite to each other, wherein the side of the tile protector body away from the other tile protector body forms a convex arc-shaped contact surface, and the side opposite to the contact surface is concave to form a placement cavity.

[0023] Through the present invention, the two tile protection bodies arranged opposite to each other can provide better symmetry and stability, which is helpful to evenly distribute the weight of the object to be hoisted to the steel wire rope; the convex arc-shaped contact surface can increase the contact area with the steel wire rope, reduce the local pressure on the steel wire rope, increase the service life of the steel wire rope, and prevent the steel wire rope from being damaged by the edges of the object to be hoisted during the hoisting process, causing accidents; the placement cavity formed by the concave side of the contact surface can clamp the edges of the object to be hoisted, so that the connection between the tile protection body and the object to be hoisted is tighter.

[0024] Preferably, in step S5, a continuous box girder edge protection work platform includes a work platform body, the work platform body includes a plurality of work platform components arranged above the I-beam, a fastening device is provided between adjacent work platform components for directly fixing the work platform components to the I-beam, the fastening device includes a U-shaped fastening bolt, a placement portion is formed inside the fastening bolt, both ends of the fastening bolt are provided with external threads and fastening nuts threadedly connected to the fastening bolt, and both ends of the fastening bolt respectively pass through the fixing flanges arranged under the adjacent work platform bodies and fix the I-beam in the placement portion.

[0025] By means of the present invention, the working platform assembly is hoisted above the existing I-beam cross beam, aligned with the predetermined position, and then the fastening bolts are placed under the working platform assembly so that both ends thereof pass through the fixing flanges under the adjacent working platform assembly, and the fastening nuts at both ends of the fastening bolts are screwed so that the placement portion inside the fastening bolts tightly clamps the I-beam cross beam, thereby fixing the working platform assembly on the I-beam cross beam; the existing I-beam cross beam is used to install and fix the working platform body, making its installation and fixation more convenient and quick; the design of the fastening bolts and fastening nuts provides a firm connection, ensuring that the working platform assembly is stably fixed on the I-beam cross beam, thereby increasing the safety of the entire working platform body; the design of the fastening device reduces welding operations, making the working platform assembly reusable and practical, and having higher economy; the design of the fastening device also makes the installation process of the working platform assembly simple and quick, and easy to adjust, thereby improving work efficiency.

[0026] Preferably, the double-width continuous beam surface channel in step S5 includes two movable staircases arranged opposite to each other on the left and right sides of the top surface of the double-width box beam, and the left and right staircases are connected by a transverse channel that can adjust the distance between the two stairs.

[0027] Through the present invention, the movable staircase and the adjustable transverse passage provide great flexibility. When the interval between the double-width box girders changes, the position and spacing of the stairs can be adjusted according to actual needs to adapt to different usage scenarios.

[0028] Preferably, the installation device for the secondary distribution box on the beam surface of the double-width continuous beam in step S5 includes a device body, the device body includes a device base frame arranged between the double-width box beams for carrying the secondary distribution box, the device base frame includes a horizontally arranged rectangular iron pipe frame, and legs are vertically provided at the four corners of the iron pipe frame. A device base plate made of a fireproof polyvinyl chloride board is provided above the iron pipe frame, and a device placement surface is formed above the device base plate, and the secondary distribution box is located on the device placement surface.

[0029] Through the present invention, the device chassis arranged between the double-width box girders is used to carry the secondary distribution box, and the secondary distribution box originally arranged on the beam surface can be moved between the double-width box girders, reducing the occupation of the beam surface space, and it is also more convenient to subsequently wire and lead out the tertiary distribution box; the device chassis adopts a rectangular iron pipe frame, which has high structural strength and stability, and can ensure the safe carrying of the secondary distribution box; the vertically arranged legs at the four corners can be conveniently fixed between the double-width box girders, and at the same time simplifies the installation process and is easy to install; the device bottom plate is made of fireproof polyvinyl chloride board, which effectively improves the fireproof performance of the device and ensures the safe operation of the secondary distribution box; the device placement surface formed above the device bottom plate provides a stable working platform for the secondary distribution box, which is convenient for staff to maintain and overhaul.

[0030] Preferably, the movable continuous box girder transverse prestressed tensioning windproof working platform in step S6 includes a windproof working platform arranged on the top surface of the box girder, and a wind-catching fixing device for wind protection is provided on one side of the windproof working platform away from the edge of the box girder flange plate.

[0031] Through the present invention, when the transverse prestressed tendons need to be tensioned, the windproof working platform is adjusted to a suitable position, and then the wind-catching fixing device is connected to the top surface of the box girder. This can effectively reduce the risk of the windproof working platform shaking or even falling due to the wind force at high altitudes, thereby improving the tensioning quality and construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is the schematic diagram of the 0# steel pipe support of the continuous box girder;

[0033] Figure 2 This is a side view of the 0# steel pipe support of the continuous box girder;

[0034] Figure 3 is a schematic diagram of the first embedded steel plate and the first reinforcing rib;

[0035] Figure 4 It is a schematic diagram of a triangular pad;

[0036] Figure 5 This is a top view of the 0# steel pipe support of the continuous box girder;

[0037] Figure 6 is a schematic diagram of the first embedded steel plate;

[0038] Figure 7 This is a schematic diagram of the inclined-leg steel pipe support used in the construction of the 0# block of the continuous box girder;

[0039] Figure 8 is a schematic diagram of the second embedded steel plate and the second reinforcing rib;

[0040] Fig. 9 This is a schematic diagram of the second sandbox;

[0041] Fig.10 is a schematic diagram of the second bracket body;

[0042] Fig.11 is a schematic diagram of a second bracket assembly;

[0043] Fig.12 is a schematic diagram of the second embedded steel plate;

[0044] Fig.13 Schematic diagram of wall connection;

[0045] Fig.14 This is a schematic diagram of the embedded parts for connecting walls;

[0046] Fig.15It is the schematic diagram for embedding the pre-embedded parts of the wall;

[0047] Fig.16 This is a schematic diagram of a wind rope device;

[0048] Fig.17 This is a schematic diagram of a concrete anchor;

[0049] Fig.18 A schematic diagram of quick installation of tile guards for hanging baskets;

[0050] Fig.19 This is a schematic diagram of the tile protection and wire rope;

[0051] Fig. 20 This is a schematic diagram of the tile protection body;

[0052] Fig.21 This is a schematic diagram of the rope clamp and the connecting rope;

[0053] Fig. 22 This is a schematic diagram of the continuous box girder edge protection working platform;

[0054] Fig.23 is a schematic side view of a working platform assembly;

[0055] Fig.24 for Fig.23 The enlarged schematic diagram of F in the middle;

[0056] Fig.25 This is a schematic diagram of the main body of the working platform;

[0057] Fig.26 is a schematic diagram of a fastening device;

[0058] Fig. 27 It is a schematic diagram of the working platform components;

[0059] Fig.28 This is a schematic diagram of the connection card;

[0060] Fig.29 This is a schematic diagram of the transverse safety passage on the beam surface of the adjustable double-width box girder;

[0061] Fig.30 It is a schematic diagram of the transverse channel;

[0062] Fig.31 For the left connection Figure 1 ;

[0063] Fig.32 For the left connection Figure 2 ;

[0064] Fig.33 is a schematic diagram of a first fixing rod;

[0065] Fig.34is a schematic diagram of a second fixing rod;

[0066] Fig.35 Schematic diagram of the stairs;

[0067] Fig.36 This is a schematic diagram of the installation device of the secondary distribution box on the beam surface of a double-width continuous beam;

[0068] Fig.37 It is a top view schematic diagram of the device chassis;

[0069] Fig.38 It is a schematic side view of the base frame of the device;

[0070] Fig.39 This is a schematic diagram of the main view of the installation device of the secondary distribution box on the beam surface of the double-width continuous beam;

[0071] Fig.40 is a schematic diagram of the connected components;

[0072] Fig.41 is a schematic diagram of a grounding component;

[0073] Fig.42 Schematic diagram of the movable continuous box girder transverse prestressing windproof working platform Figure 1 ;

[0074] Fig.43 Schematic diagram of the movable continuous box girder transverse prestressing windproof working platform Figure 2 ;

[0075] Fig.44 Indicates the load-bearing part Figure 1 ;

[0076] Fig.45 Indicates the load-bearing part Figure 2 ;

[0077] Fig.46 This is a schematic diagram of the tensioning platform;

[0078] Fig.47 It is a schematic diagram of the cantilever frame;

[0079] Fig.48 This is a schematic diagram of the rope clamp. DETAILED DESCRIPTION

[0080] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0081] Example 1

[0082] like Figure 1-48 As shown, this embodiment provides a construction method for a double-width prestressed continuous box girder 0# block, which includes:

[0083] Step S1: Support construction, select the appropriate support mode according to the design of block 0#, and select the full-span steel pipe support for construction when the main pier height is not more than 8m; when the size of the pedestal 110 is too small to meet the full-span steel pipe support directly falling on the pedestal 110, and the direction of the pedestal 110 is perpendicular or parallel to the direction of the bridge, use the oblique leg steel pipe support 190 for the construction of the continuous box beam 0# block for support construction; when the direction of the pedestal 110 is at a large angle to the direction of the bridge, use the continuous box beam 0# block steel pipe support 191 for support construction;

[0084] Step S2: Ladder cage construction. After the installation of the 0# bracket is completed, the bracket bottom formwork is installed and the bracket is pre-pressed. Before the formwork is installed, the climbing ladder cage 3114 is installed. The climbing ladder cage 3114 is provided with a fixing assembly 120. The fixing assembly 120 includes a wall connecting member 121 and a wind rope device 122. The climbing ladder cage 3114 is provided with a wall connecting member 121 every 4 meters. When the height of the climbing ladder cage 3114 is greater than 6 meters, the wind rope device 122 is provided on the side away from the pier 199.

[0085] Step S3: Installation of hanging basket components, the installation process includes the hoisting of I-beam crossbeams 130, angle steels, channel steels and other steel components, and during the hoisting process, the hanging basket quick-installation protective tiles 140 for wire rope protection are installed on the steel components;

[0086] Step S4: 0# block casting, perform 0# block casting, and remove the mold after the casting is completed and the strength reaches the standard;

[0087] Step S5: installing edge protection and construction platform, installing edge protection and construction platform, wherein the continuous box beam edge protection work platform 150 is installed on the I-beam cross beam 130;

[0088] Step S6: beam surface channel construction, performing beam surface channel construction, wherein a double-width continuous beam surface channel 160 is installed between the left and right continuous beam surfaces;

[0089] Step S7: beam surface circuit configuration, perform beam surface circuit configuration, install between the left and right continuous beam surfaces and use the double-width continuous beam surface secondary distribution box 170 installation device to place the secondary distribution box 8120;

[0090] Step S8: Prestressing of 0# continuous beam, prestressing operation is performed on 0# continuous beam, wherein the transverse prestressing of 0# is performed on the movable continuous box beam transverse prestressing windproof working platform 180.

[0091] Through this embodiment, the standardization of the entire construction process helps to reduce errors and rework in the construction process, improve construction quality, control costs, and help ensure that all construction activities are carried out according to the established plan; the use of various devices and equipment improves the construction efficiency and safety of the project.

[0092] Example 2

[0093] like Figure 1-6 As shown, the present embodiment provides a continuous box girder 0# block steel pipe support 191, which is used for a double-width prestressed continuous box girder 0# block construction method described in Example 1, and includes a first support body 1100, the first support body 1100, including multiple first support assemblies 1110, the first support assembly 1110 includes two vertically arranged first vertical columns 1111, a first horizontal cross bar 1112 for connecting the two first vertical columns 1111 is horizontally arranged between the first vertical columns 1111, and multiple first reinforcing cross braces 1120 are arranged between the first support assemblies 1110 to connect the first support assemblies 1110 to the first support body 1100, and the first reinforcing cross braces 1120 are arranged at an acute angle to the length direction of the pedestal 110; the two first support bodies 1100 are respectively arranged on both sides of the pier 199, and also include two concrete foundations 180 arranged around the pedestal 110.

[0094] Through this embodiment, when the pedestal 110 is unable to directly construct a full-span steel pipe support due to the deviation of its setting direction and line shape from the main bridge direction, this problem can be better solved, and the construction is relatively convenient and quick; the design of the first support assembly 1110 includes a first vertical column 1111 and a first horizontal cross bar 1112, forming a relatively stable frame structure, and at the same time, the first reinforcing cross brace 1120 arranged between the first support assemblies 1110 can effectively disperse the load to the entire first support body 1100, average the burden of each first support assembly 1110, improve the bearing capacity and stability of the overall structure, and prevent the first support body 1100 from being locally damaged due to external forces during construction. The first support body 1100 provides high-strength support, can withstand large loads, and ensure stability and safety during bridge construction; the concrete foundation 180 arranged around the pedestal 110 provides a larger area of ​​support for the first support body 1100, further increasing stability.

[0095] In this embodiment, the first bracket assembly 1110 further includes a plurality of first reinforcing diagonal braces 1113 disposed between the first vertical column 1111 and the first horizontal cross bar 1112 for reinforcing the first bracket assembly 1110 , and the first reinforcing diagonal braces 1113 are crossed to form a cross shape.

[0096] Through this embodiment, the first reinforcing diagonal brace 1113 can increase the overall stiffness of the first bracket assembly 1110, prevent relative displacement between the first vertical columns 1111, and enhance the stability of the entire first bracket assembly 1110; the first reinforcing diagonal brace 1113 can also share part of the load borne by the first vertical column 1111 and the first horizontal column, reduce the pressure on these columns, and extend their service life; when the first bracket assembly 1110 is subjected to external forces, the first reinforcing diagonal brace 1113 can effectively reduce the deformation of the structure, maintain the geometric shape and structural integrity of the bracket, thereby reducing safety risks during construction, protecting the safety of construction workers, and improving the safety of the construction site; the first reinforcing diagonal brace 1113 is crossed in a cross shape, which further improves the strength of the structure.

[0097] In this embodiment, a first sand box 1140 is provided at the top of the first vertical column 1111, a first support steel plate 1150 is provided at the top and the first bottom of the first sand box 1140, a first support steel plate 1150 is also provided at the top of the first vertical column 1111, an I-beam 130 is provided above the first support steel plate 1150 at the top of the first sand box 1140 and the first support steel plate 1150 at the top of the first vertical column 1111, and a triangular pad 151 is provided between the top of the I-beam 130 and the box beam formwork 171.

[0098] Through this embodiment, the first sand box 1140 can be filled or emptied of sand to adjust its height to adapt to different construction height requirements and improve construction flexibility. After the construction of the continuous box girder 0# block is completed, the sand inside the first sand box 1140 is discharged, and then the first bracket body 1100 is dismantled, which is more convenient and quick; the I-beam cross beam 130 is used to evenly transfer the load from above the I-beam cross beam 130 to the first bracket body 1100, ensuring uniform distribution of force and avoiding dangerous accidents caused by concentrated loads. The design of the triangular pad 151 can increase the contact area with the upper structure, avoid direct contact between the I-beam cross beam 130 and the upper box girder formwork 171, increase stability while preventing damage to the upper box girder formwork 171.

[0099] In this embodiment, a first embedded steel plate 1210 is welded to the bottom end of the first vertical column 1111 , a plurality of mounting holes 211 are arranged around the first embedded steel plate 1210 , and expansion bolts 212 for fixing are arranged at the locations of the mounting holes 211 .

[0100] Through this embodiment, the first embedded steel plate 1210 and the concrete foundation 180 or the pedestal 110 are fixed by the expansion bolts 212, which can provide a relatively firm connection, enhance the connection strength between the first bracket body 1100 and the concrete foundation 180 or the pedestal 110, and avoid displacement caused by vibration or other factors during construction; the mounting holes 211 set on the first embedded steel plate 1210 make the installation of the first bracket body 1100 more convenient and quick, and the expansion bolts 212 can also quickly and accurately fix the first bracket body 1100; the design of the mounting holes 211 allows the position of the first bracket body 1100 to be fine-tuned during the installation process to ensure the accurate installation of the first bracket body 1100; further, the first anchoring steel bar 1190 is welded under the first embedded steel plate 1210, and the first anchoring steel bar 1190 is embedded in the concrete foundation 180 and the pedestal 110 to further improve the connection strength.

[0101] In this embodiment, a plurality of triangular first reinforcing ribs 1220 are welded between the first embedded steel plate 1210 and the first vertical column 1111 .

[0102] Through this embodiment, the welding of the triangular first reinforcement rib 1220 can increase the connection strength between the column and the first embedded steel plate 1210, provide additional structural support, and prevent damage to the connection due to load; the addition of the first reinforcement rib 1220 also helps to improve the stability of the entire support structure, especially when subjected to dynamic loads, the first reinforcement rib 1220 can effectively disperse and transmit these forces.

[0103] In this embodiment, the first bracket body 1100 is made of Q690D steel.

[0104] Through this embodiment, the first bracket body 1100 made of Q690D steel has higher strength, so that the first bracket body 1100 can withstand a larger load and is suitable for projects requiring high load-bearing capacity; at the same time, it has good welding performance, which is convenient for on-site welding operations and can ensure a firm connection between the first bracket components 1110; the first bracket body 1100 made of Q690D steel also has higher fatigue resistance and corrosion resistance, can withstand repeated loads during construction without metal fatigue, and can resist chemical corrosion at the construction site to a certain extent, which is convenient for the recycling of the first bracket body 1100.

[0105] In this embodiment, two concrete foundations 180 are centrally symmetrically arranged in the length direction of the base 110 . The concrete foundation 180 includes two layers, a concrete layer 181 and a brick slag layer 182 . The concrete layer 181 is located above the brick slag layer 182 .

[0106] Through this embodiment, the centrally symmetrical concrete foundation 180 can ensure uniform bearing capacity on both sides of the pedestal 110, which is beneficial to maintaining the stability and balance of the entire structure; the combination of the concrete layer 181 and the brick slag layer 182 can improve the bearing capacity of the foundation. The brick slag layer 182 as the bottom layer can provide good drainage performance, while the concrete layer 181 provides higher pressure bearing capacity.

[0107] In this embodiment, the upper surface of the concrete foundation 180 and the upper surface of the base 110 jointly form a support surface 440 , and the lower end of the first bracket body 1100 is connected to the support surface 440 .

[0108] Through this embodiment, the upper surface of the concrete foundation 180 and the upper surface of the pedestal 110 jointly form a support surface 440, and the lower end of the first bracket body 1100 is connected to the support surface 440, which can solve the problem that the full-bridge steel pipe bracket cannot be directly constructed because the setting direction and line shape of the pedestal 110 deviates from the direction of the main bridge.

[0109] Example 3

[0110] like Figure 7-12 As shown, this embodiment provides a slanted leg steel pipe support 190 for the construction of a continuous box girder 0# block, which is used in a double-width prestressed continuous box girder 0# block construction method described in Example 1, and includes a second support body 2100, the second support body 2100 includes a plurality of second support assemblies 2110 uniformly arranged along the transverse bridge direction, and a plurality of second reinforcing cross bars 2120 for connecting the second support assemblies 2110 to form the second support body 2100 are arranged between the second support assemblies 2110 along the transverse bridge direction. The component 2110 includes two second vertical columns 2210 whose lower ends are connected to the top of the platform 110 and are perpendicular to the upper surface of the platform 110. The second bracket component 2110 also includes two inclined columns 220 whose lower ends are connected to the top of the platform 110 and are inclined along the longitudinal bridge toward and away from the platform 110. A plurality of second horizontal columns 2230 for connecting the second vertical columns 2210 and the inclined columns 220 are horizontally arranged between the second vertical columns 2210 and the inclined columns 220. The second bracket component 2110 is trapezoidal.

[0111] Through this embodiment, when the size of the pedestal 110 cannot meet the vertical design of the bracket, the second bracket body 2100 composed of the inverted trapezoidal second bracket assembly 2110 is used to complete the construction of the continuous box beam 0# block 141, without pouring additional concrete to meet the construction conditions, thereby reducing the construction cost; the design of the second bracket assembly 2110 includes a second vertical column 2210 and an inclined column 220, forming a trapezoidal structure, and at the same time, a plurality of second bracket assemblies 2110 are evenly arranged along the transverse direction of the bridge, and a second reinforcement is arranged between the second bracket assemblies 2110. The cross bar 2120 can effectively distribute the load to the entire support structure, reduce the burden of the single second support assembly 2110, improve the bearing capacity and stability of the overall structure, and prevent the second support body 2100 from overturning due to external force during construction; the lower ends of the second vertical column 2210 and the inclined column 220 are connected to the top of the base 110 to facilitate the transfer of the bearing force to the base 110. The base 110 serves as a stable foundation and can provide stable support for the second support body 2100, further improving the stability of the overall structure.

[0112] In this embodiment, the second bracket assembly 2110 further includes a plurality of second reinforcing diagonal braces 2240 disposed between the second vertical column 2210 , the inclined column 220 and the second horizontal column 2230 for reinforcing the second bracket assembly 2110 .

[0113] Through this embodiment, the second reinforcing brace 2240 can increase the overall rigidity of the second bracket assembly 2110, prevent relative displacement between the columns, and enhance the stability of the entire second bracket assembly 2110; the second reinforcing brace 2240 can also share part of the load borne by the second vertical column 2210 and the second horizontal column 2230, reduce the pressure on these columns, and extend their service life; when the second bracket assembly 2110 is subjected to external forces, the second reinforcing brace 2240 can effectively reduce the deformation of the structure and maintain the second bracket assembly 2110. The geometric shape and structural integrity of the component 2110 are enhanced, thereby reducing safety risks during construction, protecting the safety of construction workers, and improving the safety of the construction site; further, a second bracket assembly 2110 is provided passing through the interior of the pier 199, and the second horizontal column 2230 of the second bracket assembly 2110 passes through the interior of the pier 199. The second bracket assembly 2110 at this position does not have a second reinforcing brace 2240 at the position passing through the pier 199, and a PVC embedded pipe is provided inside the pier 199 for the second horizontal column 2230 to pass through.

[0114] In this embodiment, a second sand box 2310 is provided at the top of the inclined column 220, a second support steel plate 2320 is provided at the top and bottom of the second sand box 2310, a second support steel plate 2320 is provided at the top of the second vertical column 2210, and an I-beam 130 is provided above the second support steel plate 2320 at the top of the second sand box 2310 and the second support steel plate 2320 at the top of the second vertical column 2210.

[0115] Through this embodiment, the second sand box 2310 can be filled or emptied of sand to adjust its height to adapt to different construction height requirements and improve construction flexibility. After the construction of the continuous box girder 0# block 141 is completed, the sand inside the second sand box 2310 is discharged, and then the second support body 2100 is dismantled, which is more convenient and quick; the I-beam cross beam 130 is used to evenly transfer the load from the top of the I-beam cross beam 130 to the second support body 2100, ensuring uniform distribution of force and avoiding dangerous accidents caused by concentrated loads.

[0116] In this embodiment, a second embedded steel plate 2410 is welded to the bottom end of the second vertical column 2210 and the inclined column 220. A plurality of second mounting holes 2411 are arranged around the second embedded steel plate 2410. Second expansion bolts 2420 for fixing the second embedded steel plate 2410 to the base 110 are arranged at the positions of the second mounting holes 2411.

[0117] Through this embodiment, the second embedded steel plate 2410 is fixed to the base 110 by the second expansion bolt 2420, which can provide a more secure connection, enhance the connection strength between the second bracket body 2100 and the base 110, and avoid displacement due to vibration or other factors during construction; the second mounting hole 2411 set on the second embedded steel plate 2410 makes the installation of the second bracket body 2100 more convenient and quick, and the second expansion bolt 2420 can also quickly and accurately fix the second bracket body 2100; the design of the second mounting hole 2411 allows fine-tuning of the position of the second bracket body 2100 during the installation process to ensure the accurate installation of the second bracket body 2100.

[0118] In this embodiment, a plurality of triangular second reinforcing ribs 2430 are welded between the second embedded steel plate 2410 and the second vertical column 2210 and the inclined column 220 .

[0119] Through this embodiment, the welding of the triangular second reinforcement rib 2430 can increase the connection strength between the column and the second embedded steel plate 2410, provide additional structural support, and prevent damage to the connection due to load; the addition of the second reinforcement rib 2430 also helps to improve the stability of the entire support structure, especially when subjected to dynamic loads, the second reinforcement rib 2430 can effectively disperse and transmit these forces.

[0120] In this embodiment, the second bracket body 2100 is made of Q690D steel.

[0121] Through this embodiment, the second bracket body 2100 made of Q690D steel has higher strength, so that it can withstand greater loads and is suitable for projects requiring high load-bearing capacity; at the same time, it has good welding performance, which is convenient for on-site welding operations and can ensure a firm connection between the second bracket assemblies 2110; the second bracket body 2100 made of Q690D steel also has higher fatigue resistance and corrosion resistance, can withstand repeated loads during construction without metal fatigue, and can resist chemical corrosion at the construction site to a certain extent, facilitating the recycling of the second bracket body 2100.

[0122] Example 4

[0123] like Figure 13-15 As shown, the present embodiment provides a wall connecting member 121, which is used in a double-span prestressed continuous box girder 0# block construction method described in Example 1, and includes a wall connecting embedded member 3110 embedded in the pier 199, the wall connecting embedded member 3110 includes a wall connecting embedded steel plate 3111, a wall connecting screw 3112 with an open end and an internal thread welded to the center of the wall connecting embedded steel plate 3111, a threaded rod 3115 with an external thread is provided at the opening of the wall connecting screw 3112, and the threaded rod 3115 extends out of the concrete surface of the pier 199 by 20 cm, and the wall connecting member 121 also includes a wall connecting rod 3113 arranged between the wall connecting embedded member 3110 and the climbing ladder cage 3114, one end of the wall connecting rod 3113 is threadedly connected to the threaded rod, and the end of the wall connecting rod 3113 away from the wall connecting embedded member 3110 is bolted to the climbing ladder cage 3114.

[0124] Through this embodiment, the wall-connecting embedded parts 3110 are pre-buried before the concrete pouring of the pier 199, and the subsequent installation of the wall-connecting connecting rod 3113 and the pier 199 only requires threaded connection, which simplifies the installation process on the construction site and improves the construction efficiency. After the construction of the pier 199 is completed, the climbing ladder cage 3114 is dismantled, and only the threaded rod 3115 needs to be removed, and then the surface of the pier 199 is repaired with concrete, which is more beautiful and practical, ensuring the appearance quality of the concrete of the pier 199, and the threaded rod 3115 can be recycled, which is more economical and environmentally friendly.

[0125] Example 5

[0126] like Figure 16-17As shown, the present embodiment provides a guy rope device 122, which is used in a double-width prestressed continuous box girder 0# block construction method described in Example 1, and includes concrete anchors 4110 arranged around a climbing ladder cage 3114, the concrete anchor 4110 is a rectangular parallelepiped and has a metal ring 4111 on the upper surface, and a reflective warning coating is provided on the surface of the concrete anchor 4110, and the guy rope device 122 also includes a guy rope 4112, one end of the guy rope 4112 is connected to the metal ring 4111, and the end of the guy rope 4112 away from the metal ring 4111 is bolted to the climbing ladder cage 3114.

[0127] Through this embodiment, by arranging concrete anchors 4110 around the climbing ladder cage 3114, the climbing ladder cage 3114 can be effectively fixed to prevent it from shaking under the action of wind, thereby enhancing the overall stability; the surface of the concrete anchor 4110 is provided with a reflective warning paint, which can enhance the visibility of the concrete anchor 4110 at night or in low light conditions and reduce the risk of accidents during construction.

[0128] Example 6

[0129] like Figure 18-21 As shown, the present embodiment provides a quick-installation tile protection 140 for a hanging basket, which is used in a construction method for a double-width prestressed continuous box girder 0# block as described in Example 1, and includes two tile protection bodies 5100 arranged opposite to each other, and the side of the tile protection body 5100 away from the other tile protection body 5100 forms a convex arc-shaped contact surface 5110, and the opposite side of the contact surface 5110 is concave to form a placement cavity 5120.

[0130] Through the present invention, the two tile protection bodies 5100 arranged opposite to each other can provide better symmetry and stability, which is helpful to evenly distribute the weight of the object to be hoisted 5140 to the wire rope 5150; the convex arc-shaped contact surface 5110 can increase the contact area with the wire rope 5150, reduce the local pressure on the wire rope 5150, increase the service life of the wire rope 5150, and prevent the wire rope 5150 from being damaged by the edges and corners of the object to be hoisted 5140 during the hoisting process, causing accidents; the placement cavity 5120 formed by the concave side opposite to the contact surface 5110 can clamp the edges and corners of the object to be hoisted 5140, so that the connection between the tile protection body 5100 and the object to be hoisted 5140 is tighter.

[0131] In this embodiment, a connecting rope 5130 is provided between the two tile protection bodies 5100.

[0132] Through this embodiment, the setting of the connecting rope 5130 can prevent the tile protection body 5100 from accidentally falling off during the construction process. Even if a single tile protection body 5100 falls off, due to the setting of the connecting rope 5130, both tile protection bodies 5100 will not fall off, thereby improving the safety of the construction site.

[0133] In this embodiment, grooves 5111 are formed at both ends of the contact surface 5110 , and magnetic suction parts 5112 for pre-fixing the protective tile body 5100 and the object to be hoisted 5140 are provided in the grooves 5111 .

[0134] Through the present embodiment, the setting of the magnetic component 5112 can realize the rapid pre-fixation of the tile protection body 5100 and the object to be hoisted 5140, simplify the installation process, and save construction time; the magnetic component 5112 is installed in the grooves 5111 at both ends of the contact surface 5110 to prevent the magnetic component 5112 from colliding with the object to be hoisted 5140 and causing damage to the magnetic component 5112. At the same time, the magnetic component 5112 can be reused, which reduces material loss during the construction process and improves economy; at the same time, the setting of the magnetic component 5112 also strengthens the connection between the tile protection body 5100 and the object to be hoisted 5140, prevents the tile protection body 5100 from accidentally falling off during the hoisting process, and enhances safety.

[0135] In this embodiment, the tile protection body 5100 is provided with a plurality of through holes 5210 for connecting with the connecting ropes 5130 , and the two ends of the plurality of connecting ropes 5130 respectively pass through the through holes 5210 on the two tile protection bodies 5100 and are fixed with rope clips 5310 on the connecting ropes 5130 .

[0136] Through this embodiment, the design of the through hole 5210 and the rope clamp 5310 allows the length of the connecting rope 5130 to be adjusted as needed, which is convenient for positioning and adjustment during the installation process; the use of the rope clamp 5310 can ensure that the connecting rope 5130 is fixed in the through hole 5210, prevent the connecting rope 5130 from sliding or falling off, and enhance the reliability of the connection, while simplifying the installation process, making the installation process simpler and faster, without the need for complicated assembly steps, and saving installation time; when the tile guard body 5100 or the connecting rope 5130 needs maintenance or replacement, the rope clamp 5310 can be quickly released for easy operation.

[0137] In this embodiment, the tile protection body 5100 is semi-cylindrical, and the placement cavity 5120 on the tile protection body 5100 is concave in the shape of an arc.

[0138] Through this embodiment, because the two tile protection bodies 5100 are both semi-cylindrical, it is convenient to directly process the tile protection bodies 5100 at the construction site. By selecting steel pipes of appropriate specifications and cutting the steel pipes into two parts along the axis, the prototypes of the two tile protection bodies 5100 can be obtained, which is more convenient and economical; the placement cavity 5120 is a concave arc shape and can be suitable for more usage scenarios. Furthermore, the shape of the placement cavity 5120 can be further processed into different shapes to provide better use effects for different objects 5140 to be hoisted.

[0139] In this embodiment, a plurality of cylindrical limit blocks 5220 are provided on the contact surface 5110 for preventing the lifting wire rope 5150 from falling off.

[0140] Through this embodiment, the limit block 5220 can effectively prevent the wire rope 5150 from falling off during the lifting process, ensuring the safety of personnel and equipment during the construction process; the cylindrical limit block 5220 can reduce the friction and wear of the wire rope 5150 on the limit block 5220, thereby extending the service life of the wire rope 5150.

[0141] Example 7

[0142] like Figure 22-28 As shown, the present embodiment provides a continuous box girder edge protection work platform 150, which is used for a double-width prestressed continuous box girder 0# block construction method described in Example 1, and includes a work platform body 6100, the work platform body 6100 includes a plurality of work platform assemblies 6120 arranged above the I-beam cross beam 130, and a fastening device 6130 is provided between adjacent work platform assemblies 6120 to directly fix the work platform assembly 6120 to the I-beam cross beam 130, the fastening device 6130 includes a U-shaped fastening bolt 6131, a placement portion 6132 is formed inside the fastening bolt 6131, external threads and fastening nuts 6133 threadedly connected to the fastening bolt 6131 are provided at both ends of the fastening bolt 6131, and both ends of the fastening bolt 6131 respectively pass through the fixing flange 6210 arranged below the adjacent work platform body 6100 and fix the I-beam cross beam 130 in the placement portion 6132.

[0143] Through this embodiment, the work platform assembly 6120 is hoisted above the existing I-beam beam 130, aligned to the predetermined position, and then the fastening bolt 6131 is placed under the work platform assembly 6120, so that its two ends pass through the fixing flange 6210 under the adjacent work platform assembly 6120, and the fastening nuts 6133 at both ends of the fastening bolt 6131 are tightened so that the placement portion 6132 inside the fastening bolt 6131 tightly clamps the I-beam beam 130, thereby fixing the work platform assembly 6120 on the I-beam beam 130; using the existing I-beam beam 130 to install and fix The working platform body 6100 makes its installation and fixation more convenient and quick; the design of the fastening bolts 6131 and the fastening nuts 6133 provides a firm connection, ensuring that the working platform assembly 6120 is stably fixed on the I-beam beam 130, thereby increasing the safety of the entire working platform body 6100; the design of the fastening device 6130 reduces welding operations, making the working platform assembly 6120 repeatable and more economical; the design of the fastening device 6130 also makes the installation process of the working platform assembly 6120 simple and quick, and easy to adjust, thereby improving work efficiency.

[0144] In this embodiment, the working platform assembly 6120 includes a rectangular load-bearing frame 6220, which is horizontally arranged and has a patterned steel plate 6230 on the top, and the fixing flanges 6210 are located at the four corners of the load-bearing frame 6220. One side of the load-bearing frame 6220 in the length direction is provided with a plurality of hollow vertical poles 6310 perpendicular to the load-bearing frame 6220, and skirting boards 6320 are provided between the hollow vertical poles 6310.

[0145] Through this embodiment, the design of the load-bearing frame 6220 ensures the load-bearing capacity of the working platform assembly 6120, and can withstand the weight of various equipment and materials during the construction process; the design of the patterned steel plate 6230 provides good anti-slip performance, reduces the risk of workers slipping, and improves safety: the setting of the skirting board 6320 can prevent the fall of materials and tools, protect the safety of the workers and equipment below, and further improve safety; the design of the fixing flange 6210 located at the four corners of the load-bearing frame 6220 also helps to evenly distribute the load transferred to the fastening device 6130, thereby reducing damage caused by uneven load.

[0146] In this embodiment, the working platform main body 6100 also includes a protective mesh 6330 for protection arranged above the working platform assembly 6120, and a connecting device 6140 for connecting the protective meshes 6330 is provided between adjacent protective meshes 6330. The protective mesh 6330 includes a vertically arranged protective mesh body 6331, and the protective mesh body 6331 is rectangular. A plurality of connecting columns 6340 are provided in the length direction of the protective mesh body 6331.

[0147] Through this embodiment, the protective mesh 6330 provides additional safety protection for the work platform assembly 6120, which can prevent workers and materials from falling from the platform and reduce the risk of accidents; the setting of the connecting device 6140 makes the installation and disassembly of the protective mesh 6330 more convenient; the design of the protective mesh 6330 also reduces wind resistance while reducing its own weight, thereby reducing the burden on the structure.

[0148] In this embodiment, the hollow vertical pole 6310 is provided with a first through hole 6311 for installation and cooperation with the protective mesh 6330, and the connecting column 6340 is provided with a second through hole 6341 for installation and cooperation with the load-bearing frame 6220. An installation cavity 6312 is formed inside the hollow vertical pole 6310, and the connecting column 6340 is inserted into the installation cavity 6312 of the hollow vertical pole 6310 and is fixed with a bolt 6313 that passes through both the first through hole 6311 and the second through hole 6341.

[0149] Through this embodiment, an installation cavity 6312 is formed inside the hollow vertical pole 6310, which facilitates the connection between the protective mesh 6330 and the load-bearing frame 6220. It is only necessary to insert the connecting column 6340 into the installation cavity 6312 of the hollow vertical pole 6310, and then use the bolt 6313 to fix the first through hole 6311 and the second through hole 6341 respectively provided on the hollow vertical pole 6310 and the connecting column 6340. The connection is relatively tight and easy to disassemble. At the same time, it can also be recycled, which is relatively economical and environmentally friendly.

[0150] In this embodiment, the connecting device 6140 includes a connecting flange 6350 arranged above the protective mesh body 6331, and connecting clips 6410 are arranged between adjacent protective mesh bodies 6331. The connecting flange 6350 and the connecting clips 6410 are bolted together.

[0151] Through this embodiment, the connecting flange 6350 is located above the protective mesh body 6331 and is connected to the connecting card 6410 by bolts, which can provide a strong and stable structure and effectively resist external forces such as wind, impact, etc.; the design of the connecting flange 6350 and the connecting card 6410 simplifies the installation process, and on-site construction personnel can quickly combine the protective mesh 6330 together to improve work efficiency; when the protective mesh 6330 needs to be repaired or replaced, the bolts can be easily removed and the damaged part can be taken out for replacement, making maintenance work more convenient.

[0152] In this embodiment, the working platform body 6100 is made of Q690D steel.

[0153] Through this embodiment, the working platform main body 6100 made of Q690D steel has higher strength, so that the working platform main body 6100 can withstand a larger load and is suitable for situations requiring high load-bearing capacity; at the same time, it has good welding performance, which is convenient for on-site welding operations and can ensure a firm connection between the working platform main bodies 6100; the working platform main body 6100 made of Q690D steel also has higher fatigue resistance and corrosion resistance, can withstand repeated loads during the construction process without metal fatigue, and can resist chemical corrosion at the construction site to a certain extent, facilitating the recycling of the working platform main body 6100.

[0154] Example 8

[0155] like Figure 29-35 As shown, this embodiment provides a double-width continuous beam surface channel 160, which is used in a double-width prestressed continuous box beam 0# block construction method described in Example 1, and includes two movable stairs 7120 arranged opposite to each other on the left and right sides of the top surface of the double-width box beam 110, and a transverse channel 7130 is provided between the left and right stairs 7120 to adjust the distance between the two stairs 7120.

[0156] Through this embodiment, the movable staircase 7120 and the adjustable transverse channel 7130 provide great flexibility. When the interval between the double-width box girders 110 changes, the position and spacing of the staircase 7120 can be adjusted according to actual needs to adapt to different usage scenarios.

[0157] In this embodiment, the transverse passage 7130 includes a left connecting portion 7210 and a right connecting portion 7220 respectively connected to the staircase 7120, the left connecting portion 7210 includes two first guardrails 7310 parallel to each other, the first guardrail 7310 includes two telescopic inner rods 7311 and a first fixed rod 7312 arranged from top to bottom on the same vertical plane, two first vertical rods 7313 are vertically arranged between the two telescopic inner rods 7311 and the first fixed rod 7312, and the right connecting portion 7220 is connected to the staircase 7120. 220 includes two second guardrails 7410 parallel to each other, and the second guardrail 7410 includes two telescopic outer rods 7411 and a second fixed rod 7412 which are arranged from top to bottom on the same vertical plane and are hollow inside. Two second vertical rods 7413 are vertically provided between the two telescopic outer rods 7411 and the second fixed rods 7412 to connect, and the first fixed rod 7312 can be extended into the interior of the second fixed rod 7412 for cooperation, and the telescopic inner rod 7311 can be extended into the interior of the telescopic outer rod 7411 for cooperation.

[0158] Through this embodiment, the transverse channel 7130 is divided into a left connection part 7210 and a right connection part 7220. The separated design makes maintenance and inspection work faster. The first guardrail 7310 and the second guardrail 7410 are provided to provide additional support for the transverse channel 7130, and can provide protection for construction workers on the transverse channel 7130 to prevent falling, thereby improving the safety and stability of the transverse channel 7130.

[0159] In this embodiment, a first walking surface 7320 is horizontally provided between the two first fixed rods 7312, and a second walking surface 7420 is horizontally provided between the two second fixed rods 7412. The first walking surface 7320 and the second walking surface 7420 are staggered up and down and the first walking surface 7320 is located below the second walking surface 7420.

[0160] Through this embodiment, the first walking surface 7320 and the second walking surface 7420 respectively arranged between the first fixed rod and the second fixed rod are used as passages for construction workers to walk. The structural setting of the first walking surface 7320 and the second walking surface staggered up and down facilitates the adjustment of the positions of the left connecting part 7210 and the right connecting part 7220. When the length of the transverse channel 7130 is shortened or lengthened, the first walking surface 7320 and the second walking surface 7420 will not interfere with each other.

[0161] In this embodiment, a plurality of fourth through holes 7510 are provided on the first fixing rod 7312, a fifth through hole 7610 penetrating the second fixing rod 7412 and the second walking surface 7420 is provided on the second fixing rod 7412 and the second walking surface 7420, and a fifth bolt 7230 penetrating through a fourth through hole 7510 and the fifth through hole 7610 and fixing the first fixing rod 7312 and the second fixing rod 7412 is also provided on the second fixing rod 7412 and the second walking surface 7420.

[0162] Through this embodiment, by providing a plurality of fourth through holes 7510 on the first fixing rod 7312, the length of the transverse channel 7130 can be adjusted in multiple stages to meet different usage requirements. The position between the first fixing rod 7312 and the second fixing rod 7412 is adjusted until a certain fourth through hole 7510 and the fifth through hole 7610 coincide, and the fifth bolt 7230 passes through the fourth through hole 7510 and the fifth through hole 7610 at the same time, and the screw 230 is tightened to complete the fixation. Through the precise matching of the fifth bolt 7230 passing through the corresponding fourth through hole 7510 and the fifth through hole 7610, it can be ensured that the connection between the first fixing rod 7312 and the second fixing rod 7412 is firm and will not loosen during use. The fixing method of the fifth bolt 7230 makes the installation and disassembly process of the transverse channel 7130 simple and fast, greatly saving time and labor costs.

[0163] In this embodiment, the two second fixing rods 7412 are both provided with an insertion port 7620 on one side close to the second walking surface 7420 .

[0164] Through this embodiment, the plug-in interface 7620 provided on the second fixed rod 7412 facilitates the insertion of the first walking surface 7320 connected to the first fixed rod 7312 into the side of the second fixed rod 7412, thereby increasing the structural strength of the connection. If there is no plug-in interface 7620, a gap must be left between the first fixed rod 7312 and the first walking surface 7320 for the second fixed rod 7412 to be inserted in order to achieve the length adjustment of the transverse channel 7130, and its structural strength is greatly reduced.

[0165] In this embodiment, the first fixing rod 7312 includes a limiting rod 7520 and a positioning rod 7530 which are coaxially arranged.

[0166] Through this embodiment, the first fixed rod 7312 is composed of a coaxially arranged limiting rod 7520 and a positioning rod 7530. The diameter of the limiting rod 7520 is the same as that of the second fixed rod 7412 and is larger than that of the positioning rod 7530. This design facilitates the insertion of the positioning rod 7530 into the second fixed rod 7412 to complete positioning. At the same time, the diameter of the limiting rod 7520 is the same as that of the second fixed rod 7412. When the positioning rod 7530 is inserted into the second fixed rod 7412 to a certain depth, the limiting rod 7520 contacts the second fixed rod 7412, thereby preventing the positioning rod 7530 from being inserted too deep.

[0167] In this embodiment, universal wheels 7710 are provided at the bottom of the left and right stairs 7120 on the top surface of the double-width box beam 110 .

[0168] Through this embodiment, the universal wheels 7710 allow the safety passage to be easily moved, providing great flexibility and adjusting the position according to work requirements. Due to the configuration of the universal wheels 7710, there is no need for excessive manual labor when moving the safety passage, thereby saving labor. The universal wheels 7710 are also equipped with a braking device. When the stairs on the left and right sides of the double-width box beam 110 reach the predetermined location, the braking device is locked and the universal wheels 7710 no longer rotate.

[0169] In this embodiment, the staircase 7120 and the transverse passage 7130 are made of Q390GJD steel.

[0170] Through this embodiment, the yield strength of Q390GJD steel is relatively high, so that the staircase 7120 and the transverse channel 7130 have a high bearing capacity and can withstand a large load. The fatigue resistance of Q390GJD steel is excellent, and the staircase 7120 and the transverse channel 7130 can withstand repeated loads in long-term use and are not prone to fatigue damage. Q390GJD steel has excellent performance, but its cost is relatively reasonable, with good cost performance, which is conducive to reducing the overall project cost.

[0171] Example 9

[0172] like Figure 36-41As shown, the present embodiment provides a double-width continuous beam surface secondary distribution box installation device 999, which is used for a double-width prestressed continuous box beam 0# block construction method described in Example 1, and includes a device body 8100, the device body 8100 includes a device base frame 8130 arranged between the double-width box beams 110 for carrying a secondary distribution box 8120, the device base frame 8130 includes a horizontally arranged rectangular iron pipe frame 8210, and legs 8220 are vertically provided at the four corners of the iron pipe frame 8210, and a device bottom plate 8230 made of a fireproof polyvinyl chloride board is provided above the iron pipe frame 8210, and a device placement surface 8240 is formed above the device bottom plate 8230, and the secondary distribution box 8120 is located on the device placement surface 8240.

[0173] Through this embodiment, the device chassis 8130 arranged between the double-width box girders 110 is used to carry the secondary distribution box 8120, and the secondary distribution box 8120 originally arranged on the beam surface can be moved between the double-width box girders 110, reducing the occupation of the beam surface space, and the subsequent wiring leading to the tertiary distribution box is also more convenient; the device chassis 8130 adopts a rectangular iron pipe frame 8210, which has high structural strength and stability, and can ensure the safe carrying of the secondary distribution box 8120; the legs 8220 vertically arranged at the four corners can be conveniently fixed between the double-width box girders 110, while simplifying the installation process and facilitating installation; the device bottom plate 8230 is made of fire-proof polyvinyl chloride board, which effectively improves the fireproof performance of the device and ensures the safe operation of the secondary distribution box 8120; the device placement surface 8240 formed above the device bottom plate 8230 provides a stable working platform for the secondary distribution box 8120, which is convenient for the staff to carry out maintenance and inspection.

[0174] In this embodiment, a protective frame 8140 for protecting the secondary distribution box 8120 is provided above the device base frame 8130. The protective frame 8140 includes a plurality of protective steel pipes 8141 vertically and evenly welded around the iron pipe frame 8210. A rain cover plate 8142 having the same shape as the iron pipe frame 8210 is welded to the top of the protective steel pipe 8141.

[0175] Through this embodiment, the protective steel pipe 8141 is evenly welded around the iron pipe frame 8210, so that the structure of the protective frame 8140 is strengthened, providing additional safety protection for personnel and the secondary distribution box 8120; the rain cover plate 8142 welded on the top of the protective steel pipe 8141 is consistent with the shape of the frame, which can effectively block rain and prevent falling objects from high altitude from causing damage to personnel and equipment, and has a good protective effect.

[0176] In this embodiment, hinge doors 8310 for entering and exiting the protection frame 8140 are symmetrically provided on both sides of the protection frame 8140 close to the double-width box beam 110, and a password lock 8320 is provided on the hinge door 8310.

[0177] Through this embodiment, the symmetrically arranged hinged doors 8310 allow construction workers to enter the interior of the protective frame 8140 regardless of which side of the double-width box girder 110 they are on, thereby facilitating maintenance; the setting of the password lock 8320 provides an additional security measure to prevent unauthorized personnel from entering the protective frame 8140 at will, thereby improving safety.

[0178] In this embodiment, rectangular windows 8330 are symmetrically provided on both sides of the protection frame 8140 close to the double-width box beam 110, and a fire-fighting equipment box 8340 that can be opened from the outside is embedded in the rectangular window 8330.

[0179] Through this embodiment, the fire-fighting equipment box 8340 is embedded in the protective frame 8140, which can provide storage space for fire-fighting equipment without hindering the overall safety of the protective frame 8140, ensuring the safe storage and use of fire-fighting equipment. In emergency situations, such as when a fire occurs, outsiders can quickly open the fire-fighting equipment box 8340 to obtain fire-fighting equipment, which helps to quickly respond to and extinguish initial fires; the window design embedded with the fire-fighting equipment box 8340 makes the management and maintenance of fire-fighting equipment more convenient, and management personnel can regularly check and replace fire-fighting equipment to ensure that it is in good and usable condition.

[0180] In this embodiment, the device body 8100 also includes two ladders 8150 arranged opposite to each other on the left and right sides of the top surface of the double-width box girder 110 , and a connecting fitting 8160 is provided between the ladder 8150 and the support leg 8220 .

[0181] Through this embodiment, the provision of the climbing ladder 8150 enables the staff to quickly and conveniently reach the top of the device base frame 8130 to perform maintenance, inspection or other operations, thereby improving work efficiency; the connecting fitting 8160 ensures the stability and safety of the climbing ladder 8150 and reduces the risk of accidents during work; the connecting fitting 8160 is of detachable design, which facilitates subsequent position replacement as the bridge is advanced.

[0182] In this embodiment, a connecting fitting 8160 is provided between the device base frame 8130 and the anti-collision guardrail steel bar 188.

[0183] Through this embodiment, the anti-collision guardrail steel bars 188 as a permanent embedded structure on the beam surface have higher strength, and the design of the connecting fittings 8160 ensures a firm connection between the base frame and the anti-collision guardrail steel bars 188, thereby improving the stability and safety of the entire structure.

[0184] In this embodiment, the connecting fitting 8160 includes a U-shaped fastening U-bolt 8161 , and both ends of the fastening U-bolt 8161 are provided with external threads and a fastening fitting nut 8162 threadedly connected to the fastening U-bolt 8161 .

[0185] Through this embodiment, the U-shaped fastening U-bolt 8161 can provide stable support and connection, ensure the stability of the connection of the connecting fitting 8160, and prevent loosening; the design of the external thread makes it easy to screw in and out the fastening nut 8162, which is convenient for installing and disassembling the connecting fitting 8160.

[0186] In this embodiment, the device body 8100 also includes a grounding component 8170 for grounding. The grounding component 8170 includes a copper bolt 8171 arranged on the device base plate 8230. Copper wires 8172 are arranged at both ends of the copper bolt 8171. One end of the copper wire 8172 is connected to the secondary distribution box 8120, and the other end is provided with a conductive column 8173 placed on the beam surface.

[0187] Through this embodiment, the copper bolt 8171, copper wire 8172 and conductive column 8173 made of copper material have good conductivity, which can ensure the reliability and effectiveness of the grounding connection, reduce the grounding resistance and improve the grounding effect; the copper material also has strong corrosion resistance, and can maintain stable performance in any environment, thereby extending the service life of the grounding component 8170.

[0188] Example 10

[0189] like Figure 42-48 As shown, this embodiment provides a movable continuous box girder transverse prestressed tensioning windproof working platform 180, which is used in a double-width prestressed continuous box girder 0# block construction method described in Example 1, and includes a windproof working platform 9120 arranged on the top surface of the double-width box girder 110, and the windproof working platform 9120 is provided with a wind-catching fixing device 9110 for wind protection on one side away from the edge of the box girder flange plate 136.

[0190] Through this embodiment, when the transverse prestressed tendons need to be tensioned, the wind-proof working platform 9120 is adjusted to a suitable position, and then the wind-catching fixing device 9110 is connected to the top surface of the double-width box girder 110. This can effectively reduce the risk of the wind-proof working platform 9120 shaking or even falling due to the high-altitude wind force of the double-width box girder 110, thereby improving the tensioning quality and construction safety.

[0191] In this embodiment, the windproof working platform 9120 includes a load-bearing part 9200 arranged near the edge of the box girder flange plate 136, and a tensioning platform 9300 is provided on one side of the load-bearing part 9200. The tensioning platform 9300 extends out of the top surface of the double-width box girder 110 in a direction away from the center line of the double-width box girder 110, and a cantilever frame 400 is provided between the load-bearing part 9200 and the tensioning platform 9300.

[0192] Through this embodiment, the arrangement of the load-bearing part 9200 close to the edge of the box beam flange plate 136 can make it easier for construction workers to approach the edge of the double-width box beam 110 for tensioning operations, thereby improving work efficiency. At the same time, the design of the load-bearing part 9200 can provide a stable support for the windproof work platform 9120, which helps to ensure the safety of construction workers. The tensioning platform 9300 extends in a direction away from the center line of the double-width box beam 110, which can provide construction workers with a larger operating space, facilitating various operations such as tensioning.

[0193] In this embodiment, the wind-catching fixing device 9110 includes a plurality of fixed lifting ears 9111 arranged above the load-bearing part 9200 and a fixed wind-catching rope 9112 connecting the fixed lifting ears 9111 and the top surface of the double-width box girder 110. The fixed wind-catching rope 9112 passes through the fixed lifting ears 9111 and is fixed by a fixed rope clip 9113 on the rope body.

[0194] Through this embodiment, the fixed wind rope 9112 is connected to the double-width box girder 110 through the fixed lifting lug 9111, which can effectively disperse the wind force, reduce the lateral displacement of the windproof working platform 9120, and improve the stability of the entire structure. By using the fixed rope clamp 9113, the length of the fixed wind rope 9112 can be flexibly adjusted to adapt to the changes in wind force under different environmental conditions. The design of the fixed lifting lug 9111 and the fixed rope clamp 9113 is usually simple and easy to use, easy to install and disassemble, thereby speeding up the construction progress. The fixed wind rope 9112 can prevent the windproof working platform 9120 from moving due to the influence of wind force during construction or use, thereby ensuring the safety of construction workers.

[0195] In this embodiment, the load-bearing part 9200 includes a rectangular frame 9210, a load-bearing block 9220 is provided inside the frame 9210, four walking wheels 9230 are provided on the lower side of the frame 9210, and the load-bearing part 9200 also includes a walking motor 9240 arranged on the top of the frame 9210, and a transmission shaft 9250 is provided between the walking motor 9240 and the walking wheels 9230.

[0196] Through this embodiment, the rectangular parallelepiped frame 9210 is the supporting structure of the load-bearing part 9200, which is made of steel and can support a large weight. The frame 9210 is provided with a load-bearing block 9220 inside, which can greatly increase its own weight and maintain the overall stability of the windproof work platform 9120. The load-bearing block 9220 is made of concrete, and concrete blocks of different specifications can be customized according to needs to achieve the best effect. The walking motor 9240 on the top provides power for the windproof work platform 9120 to walk. The motor rotates to drive the transmission shaft 9250, and the transmission shaft transmits power to the walking wheel 9230, and the walking wheel 9230 drives the entire windproof work platform 9120 to move. At the same time, there is a locking device on the walking wheel 9230. After the windproof work platform 9120 reaches the predetermined position, the walking wheel 9230 is locked, which can effectively prevent the longitudinal wind blowing from the direction of the bridge section from affecting the windproof work platform 9120.

[0197] In this embodiment, the tensioning platform 9300 is a rectangular box with an open top surface. Vertical connecting columns 9320 are vertically provided at the four corners of the top surface of the tensioning platform 9300, and a plurality of stepping cross bars 330 are provided between two vertical connecting columns 9320.

[0198] Through this embodiment, the open top surface design facilitates the transportation of the tensioning equipment, and vertical transportation becomes more convenient, saving transportation time and labor. A plurality of stepping crossbars 9330 are arranged between the vertical connecting columns 9320, providing a safe and convenient up and down passage for the staff, reducing safety hazards during work.

[0199] In this embodiment, the cantilever frame 9400 includes two triangular support arms 9410 arranged opposite to each other, a reinforcing vertical rod 9411 is provided in the middle of the support arm 9410, and a plurality of reinforcing horizontal rods 9412 are provided between the two triangular support arms 9410.

[0200] Through this embodiment, the triangular support arm 9410 provides good stability and helps to disperse and bear weight. The reinforcement vertical rod 9411 is located in the middle of the support arm 9410, which helps to evenly distribute the load and enhance the bending and compression resistance of the overall structure. Multiple reinforcement cross bars 9412 connect the two triangular support arms, increase the overall rigidity of the cantilever frame 9400, and reduce structural deformation. The cantilever frame 9400 can be customized to adjust the length and angle of the cantilever frame 9400 according to different site conditions to provide better support effects.

[0201] In this embodiment, a fixing hook 9130 is provided on the top surface of the load-bearing portion 9200 near the edge of the box beam flange plate 136 .

[0202] Through this embodiment, the fixing hook 9130 can firmly hook the box beam flange plate 136, providing a stable fixing point for the load-bearing part 9200, thereby improving the stability of the overall structure. The use of the fixing hook 9130 can reduce the impact of the crosswind blowing from the tensioning platform 9300 to the middle of the double-width box beam 110 on the overall windproof work platform 9120. In conjunction with the wind-catching fixing device 9110, the impact of the crosswind is greatly reduced, and the safety of the windproof work platform 9120 during use is increased. A rotating shaft is provided at the connection between the fixing hook 9130 and the top surface of the load-bearing part 9200, and the fixing hook 9130 can be rotated by the rotating shaft, which facilitates the placement and folding of the fixing hook 9130.

[0203] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0204] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

[0205] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0206] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A construction method for a double-width prestressed continuous box beam 0# block, comprising the following steps: S1: Support construction, select the appropriate support mode according to the design of block 0#. When the main pier height is not more than 8m, select the full-span steel pipe support for construction; when the size of the cap (110) is too small to meet the full-span steel pipe support directly falling on the cap (110), and the direction of the cap (110) is perpendicular or parallel to the direction of the bridge, use the inclined leg steel pipe support (190) for the construction of the continuous box girder block 0# for support construction; when the direction of the cap (110) is at a large angle to the direction of the bridge, use the continuous box girder block 0# steel pipe support (191) for support construction; Step S2: Ladder cage construction. After the installation of the 0# bracket is completed, the bracket bottom formwork is installed and the bracket is pre-pressed. Before the formwork is installed, the climbing ladder cage (3114) is installed. The climbing ladder cage (3114) is provided with a fixing assembly (120). The fixing assembly (120) includes a wall connecting member (121) and a wind rope device (122). The climbing ladder cage (3114) is provided with a wall connecting member (121) every 4 meters in height. When the height of the climbing ladder cage (3114) is greater than 6 meters, the wind rope device (122) is provided on the side away from the pier column (199); Step S3: installing the hanging basket components, the installation process includes hoisting the I-beam crossbeam (130), angle steel, channel steel and other steel components, and installing the hanging basket quick installation tile (140) for wire rope protection on the steel components during the hoisting process; Step S4: 0# block casting, perform 0# block casting, and remove the mold after the casting is completed and the strength reaches the standard; Step S5: installing edge protection and construction platform, installing edge protection and construction platform, wherein a continuous box beam edge protection work platform (150) is installed on the I-beam cross beam (130); Step S6: beam surface channel construction, performing beam surface channel construction, wherein a double-width continuous beam surface channel (160) is installed between the left and right continuous beam surfaces; Step S7: beam surface circuit configuration, perform beam surface circuit configuration, install and place a secondary distribution box (8120) between the left and right continuous beam surfaces using a double-width continuous beam surface secondary distribution box installation device (999); Step S8: Prestressing of the 0# continuous beam, performing prestressing of the 0# continuous beam, wherein the transverse prestressing of the 0# continuous beam is performed on a movable continuous box beam transverse prestressing windproof working platform (180).

2. A double-width prestressed continuous box girder 0# block construction method according to claim 1, characterized in that: In step S1, a continuous box girder 0# block steel pipe support (191) includes a first support body (1100), the first support body (1100) includes a plurality of first support assemblies (1110), the first support assembly (1110) includes two vertically arranged first vertical columns (1111), a first horizontal cross bar (1112) for connecting the two first vertical columns (1111) is horizontally arranged between the first vertical columns (1111), a plurality of first reinforcing cross braces (1120) for connecting the first support assemblies (1110) to form the first support body (1100) are arranged between the first support assemblies (1110), and the first reinforcing cross braces (1120) are arranged at an acute angle to the length direction of the pedestal (110); the two first support bodies (1100) are respectively arranged on both sides of the pier (199), and also include two concrete foundations (180) arranged around the pedestal (110).

3. A construction method for a double-width prestressed continuous box beam 0# block according to claim 1, characterized in that: In step S1, the oblique-leg steel pipe support (190) for the construction of the continuous box beam block 0# includes a second support body (2100), the second support body (2100) includes a plurality of second support assemblies (2110) uniformly arranged along the transverse bridge direction, a plurality of second reinforcing cross bars (2120) for connecting the second support assemblies (2110) to form the second support body (2100) are arranged between the second support assemblies (2110) along the transverse bridge direction, and the second support assemblies (2110) include two lower ends connected to the upper end of the bearing platform (110) The second bracket assembly (2110) is a second vertical column (2210) which is perpendicular to the upper surface of the pedestal (110), and the second bracket assembly (2110) further includes two inclined columns (220) whose lower ends are connected to the top of the pedestal (110) and are inclined along the longitudinal bridge toward and away from the pedestal (110). A plurality of second horizontal columns (2230) for connecting the second vertical columns (2210) and the inclined columns (220) are horizontally arranged between the second vertical columns (2210) and the inclined columns (220), and the second bracket assembly (2110) is trapezoidal.

4. A construction method for a double-width prestressed continuous box beam 0# block according to claim 1, characterized in that: In step S2, the wall connection part (121) includes a pre-embedded wall connection part (3110) embedded in the pier (199), and the pre-embedded wall connection part (3110) includes a pre-embedded wall connection steel plate (3111), and a wall connection screw (3112) with an open end and an internal thread is welded at the center of the pre-embedded wall connection steel plate (3111), and a threaded rod (3115) with an external thread is provided at the opening of the wall connection screw (3112), and the threaded rod (3115) extends 20 cm from the concrete surface of the pier (199), and the wall connection part (121) also includes a wall connection rod (3113) arranged between the pre-embedded wall connection part (3110) and the climbing ladder cage (3114), one end of the wall connection rod (3113) is threadedly connected to the threaded rod, and the end of the wall connection rod (3113) away from the pre-embedded wall connection part (3110) is bolted to the climbing ladder cage (3114).

5. The construction method of the double-width prestressed continuous box beam 0# block according to claim 1 is characterized in that: In step S2, the wind rope device (122) includes a concrete anchor (4110) arranged around the climbing ladder cage (3114), the concrete anchor (4110) is a rectangular parallelepiped and has a metal ring (4111) on the upper surface, and the surface of the concrete anchor (4110) is provided with a reflective warning coating. The wind rope device (122) also includes a wind rope (4112), one end of the wind rope (4112) is connected to the metal ring (4111), and the end of the wind rope (4112) away from the metal ring (4111) is bolted to the climbing ladder cage (3114).

6. The construction method of the double-width prestressed continuous box beam 0# block according to claim 1 is characterized in that: In step S3, the quick-installed protective tile (140) for the hanging basket includes two protective tile bodies (5100) arranged opposite to each other, and the side of the protective tile body (5100) away from the other protective tile body (5100) forms a convex arc-shaped contact surface (5110), and the opposite side of the contact surface (5110) is concave to form a placement cavity (5120).

7. The construction method of the double-width prestressed continuous box beam 0# block according to claim 2 is characterized in that: In step S5, the continuous box girder edge protection work platform (150) includes a work platform body (6100), the work platform body (6100) includes a plurality of work platform components (6120) arranged above the I-beam cross beam (130), and a fastening device (6130) is provided between adjacent work platform components (6120) to directly fix the work platform components (6120) to the I-beam cross beam (130), and the fastening device (6130) includes a U-shaped A fastening bolt (6131) of a type is provided, a placement portion (6132) is formed inside the fastening bolt (6131), both ends of the fastening bolt (6131) are provided with external threads and fastening nuts (6133) threadedly connected to the fastening bolt (6131), and both ends of the fastening bolt (6131) respectively pass through a fixing flange (6210) provided below an adjacent working platform body (6100) and fix the I-beam crossbeam (130) in the placement portion (6132).

8. The construction method of the double-width prestressed continuous box beam 0# block according to claim 2 is characterized in that: In step S6, the double-width continuous beam surface channel (160) includes two movable stairs (7120) arranged opposite to each other on the left and right sides of the top surface of the double-width box beam (110), and a transverse channel (7130) is provided between the left and right stairs (7120) to adjust the distance between the two stairs (7120).

9. The construction method of the double-width prestressed continuous box beam 0# block according to claim 2 is characterized in that: In step S7, the double-width continuous beam surface secondary distribution box installation device (999) includes a device body (8100), the device body (8100) includes a device base frame (8130) arranged between the left and right box beams (110) for carrying the secondary distribution box (8120), the device base frame (8130) includes a horizontally arranged rectangular iron pipe frame (8210), and the four corners of the iron pipe frame (8210) are respectively vertically provided with supporting legs (8220), and a device bottom plate (8230) made of a fireproof polyvinyl chloride board is arranged above the iron pipe frame (8210), and a device placement surface (8240) is formed above the device bottom plate (8230), and the secondary distribution box (8120) is located on the device placement surface (8240).

10. A construction method for a double-width prestressed continuous box girder block 0 according to claim 2, characterized in that: In step S8, the movable continuous box girder transverse prestressed tensioning windproof working platform (180) includes a windproof working platform (9120) arranged on the top surface of the double-width box girder (110), and a wind-catching fixing device (9110) for wind protection is provided on one side of the windproof working platform (9120) away from the edge of the box girder flange plate (136).

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