Continuous box girder 0 # block steel pipe support and support structure

Abstract

The utility model relates to the technical field of box girder construction, and particularly discloses a continuous box girder 0 # block steel pipe support and a support structure. The support comprises a support body, the support body comprises a plurality of support assemblies, each support assembly comprises two vertical stand columns which are vertically arranged, a horizontal cross rod used for connecting the two vertical stand columns is horizontally arranged between the vertical stand columns, and a plurality of reinforcing cross braces used for connecting the support assemblies into the support body are arranged between the support assemblies. The reinforcing cross brace and the bearing platform form an acute angle in the length direction. When the main pier bearing platform deviates from the direction of a main bridge due to the arrangement direction and the line shape, and a vertical steel pipe support and an inclined leg support cannot be directly constructed, the problem can be well solved by using the device, and the construction is convenient and rapid; the support assemblies comprise the vertical stand columns and the horizontal transverse rods, a stable frame structure is formed, meanwhile, through the reinforcing transverse supports arranged between the support assemblies, loads can be effectively dispersed to the whole support body, the burden of each support assembly is averaged, and the bearing capacity and stability of the whole structure are improved; and local damage of the support body caused by external force in the construction process is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to box girder construction technical field, concretely relates to a continuous beam 0 block double -row type steel pipe support. BACKGROUND

[0002] In the construction process of the variable cross-section prestressed concrete continuous box girder, the 0# block construction process is particularly important, usually adopts the steel pipe support form or bracket form, the bracket form is suitable for the 0# block construction of the pier column with higher height, and the steel plate needs to be embedded on the pier column during the pier column construction process, which affects the finished appearance quality of the pier body, and the repair difficulty is big, in the highway engineering construction in the plain area, because the bridge pier column height is lower, and the concrete appearance quality requirement is high, generally selects the steel pipe support form, the main pier platform size is 7.5m * 12m * 3.5m, the river course direction is designed, and the angle with the main bridge is 42.5 °, the 0th and 1st blocks are total 11m long, are synchronously poured, the bridge deck width is 13.025m, the platform plan size is less than the 0# block size, when the support is designed, the main pier platform is often used as the support base bearing structure, and the main pier platform of the project deviates from the main bridge direction due to the setting direction and line shape, so that the vertical steel pipe support and the inclined leg support cannot be directly constructed. SUMMARY

[0003] The utility model provides a continuous box girder 0 block double -row type steel pipe support, it can overcome certain or some defects of prior art.

[0004] According to the continuous box girder 0 block double -row type steel pipe support of the utility model, it includes the support body, the support body includes a plurality of support assemblies, the support assembly includes two vertical vertical columns, the horizontal cross bar for connecting two vertical vertical columns is arranged horizontally between the vertical vertical columns, a plurality of reinforcing cross braces that connect the support assemblies into the support body are arranged between the support assemblies, and the reinforcing cross brace is arranged at an acute angle with the platform length direction.

[0005] Through the utility model, when the main pier platform deviates from the main bridge direction due to the setting direction and line shape, so that the vertical steel pipe support and the inclined leg support cannot be directly constructed, the utility model can preferably solve the problem, and the construction is relatively convenient and fast;The design of the support assembly includes vertical vertical columns and horizontal cross bars, forms a relatively stable frame structure, and the reinforcing cross brace arranged between the support assemblies can effectively disperse the load to the whole support body, evenly burden each support assembly, improve the carrying capacity and stability of the whole structure, and prevent the support body from being locally damaged due to external force during the construction process.

[0006] As a preferred, the support assembly further includes a plurality of reinforcing diagonal braces arranged between the vertical vertical columns and the horizontal cross bars for reinforcing the support assembly, and the reinforcing diagonal braces are crossed into a cross shape.

[0007] The reinforcing inclined support can increase the overall rigidity of the support assembly, prevent relative displacement between the vertical columns, and enhance the stability of the entire support assembly; the reinforcing inclined support can also share part of the load borne by the vertical columns and the horizontal columns, reduce the pressure on the columns, and prolong the service life of the columns; when the support assembly is subjected to external force, the reinforcing inclined support can effectively reduce the deformation of the structure, maintain the geometric shape and structural integrity of the support, thereby reducing the safety risk in the construction process, protecting the safety of the construction personnel, and improving the safety of the construction site; the cross-shaped reinforcing inclined support further improves the strength of the structure.

[0008] As preferred, the vertical column top end is provided with a sand box, the sand box top and bottom are provided with support steel plates, the vertical column top end is also provided with a support steel plate, the support steel plate of the sand box top and the support steel plate of the vertical column top end are provided with an I-beam above, and a triangular pad is arranged between the I-beam and the box girder formwork.

[0009] Through the utility model, the sand box can be filled or emptied, thereby adjusting the height, adapting to different construction height requirements, improving the flexibility of construction, and after the 0# block of the continuous box girder is constructed, the sand in the sand box is discharged, and then the support body is removed, which is relatively convenient and fast; the I-beam is used for uniformly transmitting the load from the upper I-beam to the support body, ensuring uniform distribution of force, avoiding dangerous accidents caused by concentrated load, the design of the triangular pad can increase the contact area with the upper structure, avoid direct contact between the I-beam and the upper box girder formwork, increase the stability, and prevent damage of the upper box girder formwork.

[0010] As preferred, the vertical column bottom end is welded with a pre-buried steel plate, a plurality of mounting holes are arranged around the pre-buried steel plate, and expansion bolts for fixing are arranged at the positions of the mounting holes.

[0011] Through the utility model, the pre-buried steel plate and the concrete foundation or the pile cap are fixed through the expansion bolts, a relatively firm connection can be provided, the connection strength of the support body and the concrete foundation or the pile cap is enhanced, displacement caused by vibration or other factors in the construction process is avoided; the mounting holes arranged on the pre-buried steel plate make the installation of the support body more convenient and fast, and the expansion bolts can also quickly and accurately fix the support body; the design of the mounting holes allows the position of the support body to be finely adjusted during installation, ensuring accurate installation of the support body; further, an anchoring steel bar is welded below the pre-buried steel plate, the anchoring steel bar is pre-buried in the concrete foundation and the pile cap, and the connection strength is further improved.

[0012] As preferred, a plurality of triangular reinforcing ribs are welded between the pre-buried steel plate and the vertical column.

[0013] The welding of the reinforcing rib in the triangular shape can increase the connecting strength between the stand and the embedded steel plate, provide additional structural support, and prevent damage to the connecting part caused by load action; the addition of the reinforcing rib also helps to improve the stability of the entire support structure, especially when subjected to dynamic load, the reinforcing rib can effectively disperse and transmit these forces.

[0014] Preferably, the support body is made of Q690D steel.

[0015] The support body made of Q690D steel has high strength, so that the support body can bear greater load and is suitable for engineering requiring high bearing capacity; at the same time, it has good welding performance, facilitating on-site welding operation, and can ensure firm connection between support components; the support body made of Q690D steel also has high fatigue resistance and corrosion resistance, can withstand repeated load during construction without metal fatigue, and can resist chemical corrosion on the construction site to some extent, facilitating recycling of the support body.

[0016] A support structure comprises two continuous box girder 0# block steel pipe supports, which are respectively arranged on both sides of the pier column, and two concrete foundations arranged around the bearing platform.

[0017] The continuous box girder 0# block steel pipe support provides high-strength support and can bear greater load to ensure the stability and safety during bridge construction; the concrete foundation arranged around the bearing platform provides greater support for the continuous box girder 0# block steel pipe support, and further, the pull rod passing through the interior of the pier column is arranged, the pull rod connects the two continuous box girder 0# block steel pipe supports, and the interior of the pier column is provided with a PVC embedded pipe for the pull rod to pass through.

[0018] Preferably, the two concrete foundations are centrally symmetrically arranged on the length direction of the bearing platform, the concrete foundation comprises two layers of a concrete layer and a brick residue layer, and the concrete layer is located above the brick residue layer.

[0019] The centrally symmetric concrete foundation can ensure that the bearing capacity on both sides of the bearing platform is uniform, which is conducive to maintaining the stability and balance of the entire structure; the combination of the concrete layer and the brick residue layer can improve the bearing capacity of the foundation, the brick residue layer as the bottom layer can provide good drainage performance, and the concrete layer can provide higher pressure-bearing capacity.

[0020] Preferably, the upper surface of the concrete foundation and the upper surface of the bearing platform jointly form a support surface, and the lower end of the continuous box girder 0# block steel pipe support is connected to the support surface.

[0021] With this invention, the upper surface of the concrete foundation and the upper surface of the pier cap together form a support surface. The lower end of the steel pipe support of the 0# block of the continuous box girder is connected to the support surface, which can solve the problem that the vertical steel pipe support and the inclined leg support cannot be directly constructed due to the deviation of the pier cap in terms of setting direction and alignment from the direction of the main bridge. Attached Figure Description

[0022] Fig. 1 A schematic diagram of the steel pipe support and support structure for the 0# block of the continuous box girder;

[0023] Fig. 2 Schematic diagram of embedded steel plate and reinforcing ribs;

[0024] Fig. 3 This is a schematic diagram of a triangular pad.

[0025] Fig. 4 This is a schematic diagram of the embedded steel plate.

[0026] Fig. 5 This is a top view schematic diagram of the steel pipe support and support structure for the 0# block of the continuous box girder;

[0027] Fig. 6 This is a side view schematic diagram of the steel pipe support and support structure for the 0# block of the continuous box girder. Detailed Implementation

[0028] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0029] Example 1

[0030] like Figs. 1-6 As shown, this embodiment provides a double-row steel pipe support for the 0# block of a continuous box girder, which includes a support body 100. The support body 100 includes multiple support components 110. Each support component 110 includes two vertically arranged vertical columns 111. A horizontal crossbar 112 for connecting the two vertical columns 111 is provided between the vertical columns 111. Multiple reinforcing cross braces 120 are provided between the support components 110 to connect the support components 110 into the support body 100. The reinforcing cross braces 120 are set at an acute angle to the length direction of the bearing platform 130.

[0031] Through the embodiment, the problem that the vertical steel pipe support and the inclined leg support cannot be directly constructed due to the deviation of the setting direction and the linear shape of the bearing platform 130 from the direction of the main bridge can be better solved by using the utility model, and the construction is more convenient and fast; the design of the support assembly 110 includes the vertical column 111 and the horizontal cross bar 112, a relatively stable frame structure is formed, and the reinforcing cross brace 120 arranged between the support assemblies 110 can effectively disperse the load to the whole support body 100, evenly distribute the burden of each support assembly 110, improve the bearing capacity and stability of the overall structure, and prevent the support body 100 from being locally damaged due to external force during the construction process.

[0032] In the embodiment, the support assembly 110 further includes a plurality of reinforcing diagonal braces 113 arranged between the vertical column 111 and the horizontal cross bar 112 for reinforcing the support assembly 110, and the reinforcing diagonal braces 113 are cross-shaped.

[0033] Through the embodiment, the reinforcing diagonal braces 113 can increase the overall rigidity of the support assembly 110, prevent relative displacement between the vertical columns 111, and enhance the stability of the whole support assembly 110; the reinforcing diagonal braces 113 can also share part of the load borne by the vertical columns 111 and the horizontal columns, reduce the pressure of these columns, and prolong the service life thereof; when the support assembly 110 is subjected to external force, the reinforcing diagonal braces 113 can effectively reduce the deformation of the structure, maintain the geometric shape and structural integrity of the support, thereby reducing the safety risk during the construction process, protecting the safety of the construction personnel, and improving the safety of the construction site; the cross-shaped reinforcing diagonal braces 113 further improve the strength of the structure.

[0034] In the embodiment, the vertical column 111 is provided with a sand box 140 at the top end, the sand box 140 is provided with a support steel plate 150 at the top and the bottom, the vertical column 111 is also provided with a support steel plate 150 at the top end, the support steel plate 150 at the top of the sand box 140 and the support steel plate 150 at the top end of the vertical column 111 are provided with an I-beam cross beam 160 above, and triangular pads 151 are arranged between the I-beam cross beam 160 and the box girder formwork 170.

[0035] Through the embodiment, the sand box 140 can be filled or emptied with sand, so as to adjust the height thereof, adapt to different construction height requirements, improve the flexibility of construction, and after the 0# block of the continuous box girder is constructed, the sand in the sand box 140 is discharged, and then the support body 100 is removed, which is relatively convenient and fast; the I-beam 160 is used for uniformly transmitting the load from above the I-beam 160 to the support body 100, ensuring uniform distribution of force, avoiding dangerous accidents caused by concentrated load, and the design of the triangular cushion block 151 can increase the contact area with the structure above, avoid direct contact between the I-beam 160 and the box girder formwork 170 above, increase stability, and prevent damage to the box girder formwork 170 above.

[0036] In the embodiment, the embedded steel plate 210 is welded at the bottom end of the vertical column 111, a plurality of mounting holes 211 are arranged around the embedded steel plate 210, and expansion bolts 212 for fixing are arranged at the positions of the mounting holes 211.

[0037] Through the embodiment, the embedded steel plate 210 and the concrete foundation 180 or the pile cap 130 are fixed through the expansion bolts 212, which can provide relatively firm connection, enhance the connection strength between the support body 100 and the concrete foundation 180 or the pile cap 130, and avoid displacement caused by vibration or other factors during construction; the mounting holes 211 arranged on the embedded steel plate 210 make the installation of the support body 100 more convenient and fast, and the expansion bolts 212 can also quickly and accurately fix the support body 100; the design of the mounting holes 211 allows the position of the support body 100 to be finely adjusted during installation, ensuring accurate installation of the support body 100; further, the anchoring steel bars 190 are welded below the embedded steel plate 210, the anchoring steel bars 190 are embedded in the concrete foundation 180 and the pile cap 130, further improving the connection strength.

[0038] In the embodiment, a plurality of triangular reinforcing ribs 220 are welded between the embedded steel plate 210 and the vertical column 111.

[0039] Through the embodiment, welding of the triangular reinforcing ribs 220 can increase the connection strength between the column and the embedded steel plate 210, provide additional structural support, and prevent damage to the connection due to the action of load; the addition of the reinforcing ribs 220 also helps to improve the stability of the entire support structure, especially when subjected to dynamic load, the reinforcing ribs 220 can effectively disperse and transmit these forces.

[0040] In the embodiment, the support body 100 is made of Q690D steel.

[0041] In this embodiment, the support body 100 made of Q690D steel has high strength, enabling it to withstand greater loads and making it suitable for projects requiring high load-bearing capacity. It also has good weldability, facilitating on-site welding and ensuring a secure connection between the support components 110. Furthermore, the support body 100 made of Q690D steel has high fatigue resistance and corrosion resistance, allowing it to withstand repeated loads during construction without metal fatigue, and it can resist chemical corrosion at the construction site to a certain extent, facilitating the reusability of the support body 100.

[0042] Example 2

[0043] like Figs. 1-6 As shown, this embodiment provides a support structure, which includes two continuous box girder 0# block steel pipe supports 400 as in Embodiment 1. The two continuous box girder 0# block steel pipe supports 400 are respectively located on both sides of the pier column 410, and also include two concrete foundations 180 located around the pier cap 130.

[0044] In this embodiment, the steel pipe support 400 of the continuous box girder 0# block provides high-strength support, capable of withstanding large loads, ensuring stability and safety during bridge construction; the concrete foundation 180 set around the abutment 130 provides a larger area of ​​support for the steel pipe support 400 of the continuous box girder 0# block; furthermore, a tie rod 420 is set through the inside of the pier column 410, the tie rod 420 connects the two steel pipe supports 400 of the continuous box girder 0# block, and the pier column 410 is provided with a PVC pre-embedded pipe for the tie rod 420 to pass through.

[0045] In this embodiment, two concrete foundations 180 are centrally symmetrically arranged along the length of the foundation 130. 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.

[0046] In this embodiment, the centrally symmetrical concrete foundation 180 can ensure that the bearing capacity on both sides of the foundation 130 is uniform, which is conducive to maintaining the stability and balance of the entire structure. The combination of concrete layer 181 and brick slag layer 182 can improve the bearing capacity of the foundation. As the bottom layer, brick slag layer 182 can provide good drainage performance, while concrete layer 181 provides higher bearing capacity.

[0047] In this embodiment, the upper surface of the concrete foundation 180 and the upper surface of the pier cap 130 together form a support surface 440, and the lower end of the steel pipe support 400 of the continuous box girder 0# block is connected to the support surface 440.

[0048] Through the embodiment, the upper surface of the concrete foundation 180 and the upper surface of the bearing platform 130 jointly form a support surface 440, and the lower end of the continuous box girder 0# block steel pipe support 400 is connected to the support surface 440, so that the problem that the bearing platform 130 cannot be directly constructed with vertical steel pipe supports and inclined leg supports due to the deviation of the setting direction and line shape of the bearing platform 130 from the direction of the main bridge can be solved.

[0049] It is easily understood that, based on one or more embodiments provided in the present application, other embodiments can be obtained by combining, splitting, recombining, etc. of the embodiments of the present application, and these embodiments do not exceed the protection scope of the present application.

[0050] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown are only part of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the present application, without departing from the creative spirit of the present application, similar structural modes and embodiments can be designed without creativity, and all of them should belong to the protection scope of the present application.

Claims

1. A continuous box girder segment steel pipe support, characterized in that: The support body (100) comprises a plurality of support assemblies (110), each of the support assemblies (110) comprises two vertical columns (111) arranged vertically, and a horizontal crossbar (112) is arranged horizontally between the two vertical columns (111) and used for connecting the two vertical columns (111), and a plurality of reinforcing cross braces (120) are arranged between the support assemblies (110) and used for connecting the support assemblies (110) into the support body (100), and the reinforcing cross braces (120) are arranged at an acute angle with the length direction of the bearing platform (130).

2. The continuous box girder 0# block steel pipe support according to claim 1, characterized in that: The support assembly (110) further comprises a plurality of reinforcing diagonal braces (113) arranged between the vertical columns (111) and the horizontal crossbar (112) and used for reinforcing the support assembly (110), and the reinforcing diagonal braces (113) are arranged in a cross shape.

3. The steel pipe support for continuous box girder 0# block according to claim 1, characterized in that: The vertical column (111) is provided with a sandbox (140) at the top end, the sandbox (140) is provided with a support steel plate (150) at the top and the bottom, the vertical column (111) is also provided with a support steel plate (150) at the top end, the support steel plate (150) at the top of the sandbox (140) and the support steel plate (150) at the top end of the vertical column (111) are provided with an I-beam (160) above, and triangular pads (151) are arranged between the I-beam (160) and a box girder formwork (170) above.

4. The steel pipe support for continuous box girder 0# block according to claim 1, characterized in that: The vertical column (111) is welded with a pre-embedded steel plate (210) at the bottom end, a plurality of mounting holes (211) are arranged around the pre-embedded steel plate (210), and expansion bolts (212) used for fixation are arranged at the positions of the mounting holes (211).

5. The steel pipe support for continuous box girder block according to claim 1, characterized in that: A plurality of triangular reinforcing ribs (220) are welded between the pre-embedded steel plate (210) and the vertical column (111).

6. The steel pipe support for continuous box girder 0# block according to claim 1, characterized in that: The support body (100) is made of Q690D steel.

7. A stent structure characterized by: The continuous box girder 0# block steel pipe support (400) comprises two continuous box girder 0# block steel pipe supports (400) according to any one of claims 1-6, the two continuous box girder 0# block steel pipe supports (400) are arranged on the two sides of a pier column (410) respectively, and the continuous box girder 0# block steel pipe support (400) further comprises two concrete foundations (180) arranged around the bearing platform (130).

8. The stent structure of claim 7, wherein: The two concrete foundations (180) are arranged symmetrically at the center in the length direction of the bearing platform (130), and the concrete foundation (180) comprises two layers of a concrete layer (181) and a brick slag layer (182), and the concrete layer (181) is arranged above the brick slag layer (182).

9. The stent structure of claim 7, wherein: The upper surfaces of the concrete foundations (180) and the upper surface of the bearing platform (130) jointly form a support surface (440), and the lower ends of the continuous box girder 0# block steel pipe supports (400) are connected to the support surface (440).

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