Bridge cantilever construction hanging basket

Abstract

The utility model relates to a bridge cantilever construction hanging basket, and belongs to the technical field of bridge construction equipment, the bridge cantilever construction hanging basket comprises a main truss piece, the main truss piece comprises a first connecting section used for installing a through hanging basket and a second connecting section detachably connected with the first connecting section, and when first blocks on the two sides of a bridge zero block are synchronously constructed, the second connecting section is detachably connected with the second connecting section; the first connecting sections are arranged in pairs and connected with each other, and when subsequent sections connected with the first bridge block are constructed, the first connecting sections and the second connecting sections are connected with each other. As the main truss piece adopts a spliced two-section truss structure, and the second connecting section at the tail part is detachably connected with the first connecting section, the main truss piece is convenient to disassemble and assemble, when a zero block of the continuous beam is short and two main truss pieces cannot be arranged at the same time for first block construction, the second connecting section at the tail part of the main truss piece can be disassembled, and the first connecting sections of the main truss pieces at the two ends are connected in a tail-to-tail manner; and the application range is wider, the construction efficiency can be improved, and popularization and application values are achieved.

Description

Technical Field

[0001] This application relates to the field of bridge construction equipment technology, and in particular to a cantilever construction formwork for bridges. Background Technology

[0002] Hanging baskets are the main equipment used in cantilever bridge construction. Commonly used hanging basket structures include triangular hanging baskets, diamond-shaped hanging baskets, and bowstring hanging baskets. The main load-bearing structures of these types of hanging baskets are located on top of the beam, classifying them as top-bearing hanging baskets. These types of hanging baskets are heavy, have many pre-drilled holes in the box girder, pose a high risk of overturning, have low travel efficiency, and the reinforcing steel cannot be hoisted as a whole, requiring on-site binding, making operation difficult and impacting the construction schedule.

[0003] The under-supported hanging basket can solve the above problems. Currently, the commonly used under-supported hanging basket uses side trusses, whose load-bearing trusses are placed on the side of the box girder and hung on the top surface of the box girder by C-hooks, allowing it to run on the top surface of the box girder. However, the existing under-supported hanging basket also has drawbacks in construction, as follows:

[0004] The C-hook crossbeam is placed flat on the beam surface, and workers need to use a ladder to pass through the rear upper crossbeam when passing through; the single row of rear upper crossbeams is under stress, and the overall stability is not good; the main truss is long, and when the 0# block of the continuous box girder is short, it is impossible to use the hanging basket to construct the 1# block; due to the presence of the front upper crossbeam, the hanging basket cannot directly travel to the closure section pouring position to construct the closure section, and a separate scaffolding needs to be set up to construct the closure section, which is a complicated process. Summary of the Invention

[0005] To address any of the shortcomings or deficiencies mentioned in the background technology, this application provides a bridge cantilever construction formwork that is easy to use on site, has better overall stability, can realize the overall hoisting of the steel cage, is suitable for short zero-block continuous box girder concrete construction scenarios, and has a wide range of applications.

[0006] In a first aspect, embodiments of this application provide a cantilever construction formwork for bridges, comprising:

[0007] The main truss includes a first connecting section for installing the under-bearing hanging basket, and a second connecting section detachably connected to the first connecting section. When constructing the No. 1 blocks on both sides of the No. 0 block of the bridge simultaneously, the first connecting sections are arranged in pairs and connected to each other. When constructing the subsequent segments connected to the No. 1 block of the bridge, the first connecting section and the second connecting section are connected to each other.

[0008] In one aspect, some embodiments further include a rear upper crossbeam for suspending the main truss segment, the rear upper crossbeam including a C-hook crossbeam and C-shaped hooks connected to both ends of the C-hook crossbeam.

[0009] In one aspect, some embodiments further include a traveling platform connected to the rear upper crossbeam, the traveling platform being equipped with a rotary crane for hoisting the reinforcing cage.

[0010] In some embodiments, the accompanying platform includes a traveling beam arranged parallel to the rear upper crossbeam, and a connecting system connecting the traveling beam and the rear upper crossbeam, wherein the second connecting section is detachably connected to the traveling beam.

[0011] In some embodiments, the C-shaped hook is fitted with a hanging frame at its end, the hanging frame is connected to the first connecting segment via a pivot, and the first connecting segment or the second connecting segment is provided with a first lifting member for adjusting the tilt angle of the first connecting segment.

[0012] In some embodiments, the hanging frame is connected to an anchor rod that passes through the C-hook beam, and the C-hook beam is provided with a second lifting member for moving the anchor rod to raise and lower the hanging frame.

[0013] In one aspect, some embodiments further include a front upper crossbeam for connecting the first connecting sections on both sides of the bridge, the front upper crossbeam having a detachable intermediate section.

[0014] In some embodiments, the system further includes a bottom mold, side molds, and inner molds, wherein the bottom mold is disposed on the lower-supported hanging basket, and the side molds are supported on the main truss.

[0015] In some embodiments, the under-supported hanging basket includes a bottom basket template, the four corners of which are connected to the first connecting sections on both sides of the bridge via suspension members.

[0016] In some embodiments, the suspension component includes a boom disposed on the first connecting section and a third lifting component, the third lifting component being used to raise the boom, the boom being connected to the bottom basket template via a sling.

[0017] Secondly, embodiments of this application provide a bridge cantilever formwork construction method, using the bridge cantilever construction formwork described in any of the above claims, the construction method including:

[0018] After the construction of the bridge's No. 0 block is completed, the lower-bearing hanging basket is installed, the main truss segments are set in pairs on both sides of the bridge's No. 0 block, and the first connecting sections of the two adjacent main truss segments are connected to each other. The pouring formwork is installed, the steel cage is hoisted, and the concrete of the bridge's No. 1 block is poured.

[0019] After the concrete is poured and cured to the design strength, the formwork is removed. The first connecting section of the two adjacent main trusses is separated from each other and moved forward by one segment. At the same time, the lower-bearing hanging basket and the pouring formwork are adjusted, the steel cage is hoisted, and the concrete of the second block of the bridge is poured.

[0020] After the concrete is poured and cured to the design strength, the formwork is removed, the main truss is moved forward by one segment, the position of the lower hanging basket and the pouring formwork is adjusted, the steel cage is hoisted, and the concrete of the subsequent segments of the bridge is poured.

[0021] Repeat the previous step until the bridge structure construction is completed.

[0022] The beneficial effects of the technical solution provided in this application include:

[0023] This application provides a cantilever construction formwork for bridges. Its main truss includes a first connecting section for installing a lower-bearing formwork and a second connecting section that is detachably connected to the first connecting section. When constructing the No. 1 blocks on both sides of the No. 0 block of the bridge simultaneously, the first connecting sections are arranged in pairs and connected to each other. When constructing the subsequent segments connected to the No. 1 block of the bridge, the first connecting section and the second connecting section are connected to each other.

[0024] Because the main truss adopts a spliced ​​two-section truss structure, the second connecting section at the tail is detachably connected to the first connecting section, which is convenient for disassembly and assembly. When the zero block of the continuous beam is too short and it is not possible to arrange two main trusses at the same time to construct the first block, the second connecting section at the tail of the main truss can be detached, and the first connecting sections of the two main trusses at both ends can be connected end to end, so that the symmetrical and rapid construction of the first block can be achieved. This has a wider range of applications, can improve construction efficiency, and has promotion and application value. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram illustrating the construction of bridge block number one according to an embodiment of this application;

[0027] Figure 2 This is a schematic diagram illustrating the construction of bridge block number two according to an embodiment of this application;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-section at point AA;

[0029] Figure 4 for Figure 2 Schematic diagram of the cross-section at point BB;

[0030] Figure 5 for Figure 2 A schematic diagram of the cross-section at point CC.

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1. Main truss; 101. First connecting section; 102. Second connecting section; 2. Rear upper crossbeam; 201. C-hook crossbeam; 202. C-shaped hook; 3. Traveling platform; 301. Traveling beam; 302. Connecting system; 4. Rotary crane; 5. Hanging frame; 6. First lifting component; 7. Anchor rod; 8. Second lifting component; 9. Front upper crossbeam; 901. Middle section; 10. Bottom formwork; 11. Side formwork; 12. Inner formwork; 13. Bottom basket formwork; 14. Suspension component; 141. Lifting rod; 142. Third lifting component; 143. Lifting strap. Detailed Implementation

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] To address any of the shortcomings or deficiencies mentioned in the background technology, this application provides a bridge cantilever construction formwork that is easy to use on site, has better overall stability, can realize the overall hoisting of the steel cage, is suitable for short zero-block continuous box girder concrete construction scenarios, and has a wide range of applications.

[0035] See Figures 1 to 5 As shown, the first aspect of this application provides a cantilever construction formwork for bridges, comprising:

[0036] The main truss 1 includes a first connecting section 101 for installing the under-bearing hanging basket, and a second connecting section 102 detachably connected to the first connecting section 101. When the No. 1 blocks on both sides of the No. 0 block of the bridge are constructed simultaneously, the first connecting sections 101 are set in pairs and connected to each other. When the subsequent segments connected to the No. 1 block of the bridge are constructed, the first connecting section 101 and the second connecting section 102 are connected to each other.

[0037] The main truss 1 of the bridge cantilever construction formwork in this embodiment adopts a spliced ​​two-section truss structure. The second connecting section 102 at the tail end is detachably connected to the first connecting section 101, which is convenient for disassembly and assembly. When the zero block of the continuous beam is too short and it is not possible to arrange two main truss 1 at the same time to construct the first block, the second connecting section 102 at the tail end of the main truss 1 can be detached, and the first connecting sections 101 at both ends of the main truss 1 can be connected end to end, so as to realize the symmetrical and rapid construction of the first block. At the same time, it can improve the construction stability, has a wider range of applications, can improve construction efficiency, and has promotion and application value.

[0038] For example, the main truss 1 adopts a splicable inverted trapezoidal truss structure. The second connecting section 102 at the tail is connected to the first connecting section 101 by bolts, which is convenient for disassembly and assembly. When the zero block of the continuous beam is too short and it is not possible to arrange two main truss 1 for the first construction at the same time, the second connecting section 102 at the tail can be removed and the first connecting sections 101 at both ends can be connected end to end, so as to achieve symmetrical and rapid construction of the first block.

[0039] It should be noted that when the first connecting segments 101 at both ends are connected end to end, and the first blocks at both ends of the zero block of the symmetrical continuous beam are constructed, the reinforcing bars can be installed by hoisting as a whole, which saves the time of binding the reinforcing bars and improves the construction efficiency. When constructing the subsequent segments connected to the first block, the second connecting segment 102 is installed on the first connecting segment 101.

[0040] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction hanging basket, which also includes a rear upper crossbeam 2 for suspending and installing the main truss 1. The rear upper crossbeam 2 includes a C-hook crossbeam 201 and C-shaped hooks 202 connected to both ends of the C-hook crossbeam 201.

[0041] In this embodiment of the application, the upper rear crossbeam 2 is used to support the main truss 1 and the lower support hanging basket connected to the main truss 1. The upper rear crossbeam 2 includes a C-hook crossbeam 201 and C-shaped hooks 202 fixedly installed at both ends of the C-hook crossbeam 201. The C-hook crossbeam 201 adopts a middle arch design and reserves a space of about 2m in height, so that on-site workers can pass through without the need for a ladder, which is safe and convenient.

[0042] For example, the C-hook beam 201 is erected on the surface of the continuous beam by a walking mechanism. The space formed by the central arch facilitates the passage of on-site workers. The C-shaped hooks 202, which are fixedly connected at both ends, extend to the flange of the continuous beam to facilitate the installation of the main truss 1.

[0043] The traveling mechanism includes lifting cylinders, traveling wheels, and traveling cylinders installed at both ends of the C-hook crossbeam 201. The traveling wheels cooperate with the track erected on the continuous beam. When the rear upper crossbeam 2 is stationary, it is positioned by the lifting cylinders. When the rear upper crossbeam 2 needs to move, it is moved by the cooperation of the traveling cylinders and the traveling wheels.

[0044] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown in the figure, this application embodiment provides a bridge cantilever construction formwork, which also includes a traveling platform 3 connected to the rear upper crossbeam 2, and a rotating crane 4 for hoisting the steel reinforcement cage is installed on the traveling platform 3.

[0045] In this embodiment, a traveling platform 3, supported on a continuous beam, overlaps the upper rear crossbeam 2. A rotary crane 4 is installed on the traveling platform 3. When the upper rear crossbeam 2 moves, the traveling platform 3 moves along with the upper rear crossbeam 2 and drives the rotary crane 4 to move, facilitating the overall hoisting and lowering of the reinforcing cage by the rotary crane 4. That is, the already tied reinforcing cage can be hoisted into the platform space of the casting formwork as a whole, realizing the overall hoisting of the reinforcing steel without the need for on-site tying, greatly saving the time of reinforcing steel tying.

[0046] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction formwork. The traveling platform 3 of the bridge cantilever construction formwork includes a traveling beam 301 arranged parallel to the rear upper crossbeam 2, and a connecting system 302 connecting the traveling beam 301 and the rear upper crossbeam 2. The second connecting section 102 is detachably connected to the traveling beam 301.

[0047] The accompanying platform 3 in this embodiment includes a traveling beam 301 and a connecting system 302. The traveling beam 301 can adopt the same structure as the rear upper crossbeam 2, ensuring convenient passage for on-site workers after the connecting system 302 between the traveling beam 301 and the rear upper crossbeam 2 is installed. The traveling beam 301 and the rear upper crossbeam 2 form a double row of C-hooks, with the connecting system 302 in the middle, which increases the overall stability of the main structure of the hanging basket while providing an installation platform for the accompanying rotary crane 4.

[0048] Furthermore, in this embodiment, the end of the walking beam 301 can be detachably connected to the second connecting section 102 of the main truss 1. When casting the second block of the continuous beam and subsequent segments, the walking beam 301 is connected to the second connecting section 102. The walking beam 301 and the rear upper crossbeam 2 simultaneously support the main truss 1, which can improve the stability during the casting construction.

[0049] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction hanging basket. The C-shaped hook 202 of the bridge cantilever construction hanging basket is fitted with a hanging frame 5 at the end. The hanging frame 5 is connected to the first connecting section 101 through a rotating shaft. The first connecting section 101 or the second connecting section 102 is provided with a first lifting member 6 for adjusting the tilt angle of the first connecting section 101.

[0050] In this embodiment, the C-shaped hook 202 is fitted with a hanging frame 5 at its end. The hanging frame 5 is connected to the first connecting section 101 of the main truss 1 via a rotating shaft, facilitating rotational adjustment of the height position of the front end of the first connecting section 101. For example, when pouring the No. 1 block, a first lifting member 6 can be installed at the tail end of the first connecting section 101. The first lifting member 6 lifts the flange of the No. 0 block of the continuous beam, enabling the first connecting section 101 to pitch and rotate around the hanging frame 5 to adjust to the designed position, facilitating the connection of the tail ends of the first connecting sections 101.

[0051] For example, when pouring the subsequent segments connected to the No. 1 block of the construction project, the second connecting segment 102 is installed onto the first connecting segment 101. The first jacking component 6 can be installed on the first connecting segment 101. The first jacking component 6 lifts the flange of the No. 0 block of the continuous beam, enabling the first connecting segment 101 to pitch and rotate around the hanging frame 5 to adjust to the design position, facilitating the end-to-end connection of the first connecting segments 101. The first jacking component 6 can be a jacking cylinder, which, in conjunction with the installed support wheels, works with the rear upper crossbeam 2 to enable the main truss segment 1 to move when the rear upper crossbeam 2 is moving.

[0052] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction hanging basket. The hanging frame 5 of the bridge cantilever construction hanging basket is connected to an anchor rod 7 that passes through a C-hook crossbeam 201. A second lifting member 8 is provided on the C-hook crossbeam 201 to drive the anchor rod 7 to move and raise the hanging frame 5.

[0053] An anchor rod 7 is installed on the hanging frame 5 by fasteners. The anchor rod 7 passes through the flange of the continuous beam and the C-hook crossbeam 201. A second lifting member 8 is installed on the C-hook crossbeam 201. The second lifting member 8 can lift the anchor rod 7 so that the hanging frame 5 is detached from the C-hook 202 and abuts and is fixed on the flange of the continuous beam, completing the conversion of the force support point and concentrating the force on the C-hook crossbeam 201 to ensure the stability during the pouring construction.

[0054] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction formwork, which also includes a front upper crossbeam 9 for connecting the first connecting sections 101 on both sides of the bridge, and a detachable middle section 901 is provided on the front upper crossbeam 9.

[0055] In this embodiment of the application, a front upper crossbeam 9 is also installed on the main truss 1 connecting both sides of the bridge. Specifically, the front upper crossbeam 9 connects the ends of the two first connecting sections 101 together to improve the load-bearing stability of the main truss 1. The front upper crossbeam 9 is provided with a detachable middle section 901. During the closure construction, only the middle part of the front upper crossbeam 9 needs to be removed to directly walk to the closure section pouring position.

[0056] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction formwork, which also includes a bottom formwork 10, a side formwork 11 and an inner formwork 12. The bottom formwork 10 is set on the lower-bearing formwork, and the side formwork 11 is supported on the main truss 1.

[0057] The cantilever construction formwork of the bridge in this embodiment of the application also includes a bottom formwork 10, a side formwork 11, and an inner formwork 12. During installation, the bottom formwork 10 is installed on the under-supported formwork, the side formwork 11 is supported on the main truss plates 1 on both sides, and the inner formwork 12 is installed in the hollow hole of the continuous beam. For example, in this embodiment, a support frame and a lifting cylinder can be erected on the main truss plate 1, and a transverse cylinder can be installed on the under-supported formwork to press the side formwork 11 against the flange and side wall of the continuous beam. The inner formwork 12 is erected on the anchoring frame in the hollow part of the connecting beam.

[0058] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction formwork. The lower-bearing formwork of the bridge cantilever construction formwork includes a bottom formwork template 13. The four corners of the bottom formwork template 13 are connected to the first connecting sections 101 on both sides of the bridge through suspension members 14.

[0059] The under-support hanging basket of this application embodiment includes a bottom basket template 13. The four corners of the bottom basket template 13 are connected to the first connecting sections 101 on both sides of the bridge through suspension members 14, thereby realizing the support of the bottom formwork 10. For example, in this embodiment, the suspension members 14 are hinged to the bottom basket template 13, which makes it convenient to adjust the suspension members 14 to adjust the tilt angle of the bottom basket template 13.

[0060] Firstly, in some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a bridge cantilever construction formwork. The suspension component 14 of the bridge cantilever construction formwork includes a suspender rod 141 and a third lifting component 142 disposed on a first connecting section 101. The third lifting component 142 is used to raise and lower the suspender rod 141. The suspender rod 141 is connected to the bottom formwork template 13 through a sling 143.

[0061] The suspension component 14 in this embodiment includes a suspension rod 141, a third lifting component 142, and a sling 143. In this embodiment, the front suspension rod 141 extends upward through the first connecting section 101 and the front upper crossbeam 9 and is fixedly connected to the bottom basket template 13 via the sling 143. The third lifting component 142 supporting the suspension rod 141 is installed on the front upper crossbeam 9. At the same time, the rear suspension rod 141 extends upward through the lower chord of the first connecting section 101, and the third lifting component 142 supporting the suspension rod 141 is also installed on the lower chord. This allows the bottom basket template 13 to be raised and lowered in coordination.

[0062] See Figures 1 to 5 As shown, the second aspect of this application provides a bridge cantilever formwork construction method. Using the bridge cantilever formwork of any of the above embodiments, the construction method includes:

[0063] After the construction of the bridge No. 0 block is completed, the lower-bearing hanging basket is installed, the main truss 1 is set in pairs on both sides of the bridge No. 0 block, and the first connecting section 101 of the two adjacent main truss 1 is connected to each other. The pouring formwork is installed, the steel cage is hoisted, and the concrete of the bridge No. 1 block is poured.

[0064] After the concrete is poured and cured to the design strength, the formwork is removed. The first connecting section 101 of the two adjacent main truss segments 1 is separated from each other and moved forward by one segment. At the same time, the lower-bearing hanging basket and the pouring formwork are adjusted, the steel cage is hoisted, and the concrete of the second block of the bridge is poured.

[0065] After the concrete is poured and cured to the design strength, the formwork is removed. The main truss segment 1 is moved forward by one segment. At the same time, the position of the lower-bearing hanging basket and the pouring formwork is adjusted. The steel cage is hoisted and the concrete of the subsequent segments of the bridge is poured.

[0066] Repeat the previous step until the bridge structure construction is completed.

[0067] The construction method of this application uses the bridge cantilever construction formwork described in the above embodiments, which has the following advantages compared with ordinary formwork:

[0068] 1. The traveling beam 301 and the rear upper crossbeam 2 are used to form a double row of C hooks, and a connecting system 302 is set in the middle. This increases the overall stability of the main structure of the hanging basket and provides an installation platform for the traveling rotating crane 4.

[0069] 2. A small, movable rotating crane 4 is installed on the connecting system 302, which can lift the already tied steel reinforcement cage into the platform space of the pouring formwork as a whole, realizing the overall hoisting of the steel reinforcement and greatly saving the time of steel reinforcement tying;

[0070] 3. The C-hook crossbeam 201 of the rear upper crossbeam 2 adopts a central arch design, reserving a space of about 2m in height, so that on-site workers can pass through without the need for ladders, which is safe and convenient;

[0071] 4. The main truss 1 adopts a splicable inverted trapezoidal truss structure. The first connecting section 101 at the tail is connected to the second connecting section 102 by bolts, which is convenient for disassembly and assembly. When the zero block of the continuous beam is too short and it is not possible to arrange two main truss 1 at the same time to construct the first block, the second connecting section 102 at the tail can be removed, and the first connecting sections 101 at both ends can be connected end to end, so as to achieve symmetrical and rapid construction of the first block.

[0072] 5. The front upper crossbeam is designed in 9 segments, with a detachable middle section 901. During the closure construction, only the middle section 901 of the front upper crossbeam 9 needs to be removed, and one can walk directly to the closure section pouring position.

[0073] In summary, this application has a reasonable design, solves the shortcomings of traditional bottom-bearing hanging baskets such as weak overall stability, inability to adapt to the construction of short zero-block continuous box girders, and inability to directly construct closure sections. It has a wider range of applications, and truly realizes the overall hoisting of steel bars, saving steel bar binding time and improving construction efficiency. It has certain promotional and application value.

[0074] For example, the specific steps of the construction method in this application embodiment are as follows:

[0075] S1. Install the formwork and construct block 1: Assemble the lower-bearing formwork off-site in advance; main truss segment 1 will not be installed yet. After the construction of block 0 of the continuous beam is completed, hoist the pre-assembled lower-bearing formwork as a whole, and connect the tails of the first connecting sections 101 of the two main truss segments 1 to each other with bolts. After installation, adjust to the design alignment and elevation, hoist the reinforcing cage, and pour the concrete for block 1.

[0076] S2. Demolding: After the concrete of block 1 is poured and cured to the design strength, demolding is carried out after tensioning and grouting. The demolding sequence is: side mold 11 → bottom mold 10 → inner mold 12.

[0077] The side mold 11 is demolded using lifting cylinders and lateral cylinders; the bottom mold 13 is demolded by lowering the bottom mold 13 using the front and rear lifting cylinders of the suspension part 14 on the bottom mold 13; and the inner mold 12 is demolded by flipping the mold using a tilting cylinder.

[0078] S3. Before traveling, the support point is changed: the connecting bolts of the first connecting section 101 on both sides are removed, the lifting cylinder connected to the anchor rod 7 is lifted, and the nut on the anchor rod 7 is loosened. Then the lifting cylinder connected to the anchor rod 7 is lowered so that the hanging frame 5 connected to the main truss 1 on both sides falls on the C-shaped hook 202. The anchor rod 7 is then removed manually.

[0079] The lifting cylinders on the traveling beam 301 and the rear upper crossbeam 2 retract synchronously at the same speed, so that the traveling wheels on the traveling beam 301 and the rear upper crossbeam 2 fall into the track on the continuous beam.

[0080] S4. Move forward to the pouring position of block 2: Use the hydraulic cylinder on the bridge surface to push the hanging basket forward by one segment.

[0081] S5. System conversion before pouring: Install the second connecting section 102 on the main truss 1. The lifting cylinders on the traveling beam 301 and the rear upper crossbeam 2 extend synchronously at the same speed, so that the traveling wheels on the traveling beam 301 and the rear upper crossbeam 2 leave the track on the continuous beam. The anchor rod 7 is manually installed, and the lifting cylinder connected to the anchor rod 7 is controlled to move upward and anchored.

[0082] S6. Mold Closure: The bottom mold 10 is closed using the front and rear lifting cylinders of the suspension component 14 on the bottom basket template 13; the side mold 11 is closed using the lifting cylinder and the transverse moving cylinder.

[0083] S7. Rebar cage hoisting: The pre-tied rebar cage is hoisted as a whole using the accompanying rotary crane 4 to complete the connection with the reserved rebar in the previous section.

[0084] S8. Move the inner formwork forward by 12 and anchor it. Connect the tie bars between the inner and outer formwork to prepare for pouring concrete.

[0085] S9. Continue construction of subsequent segments of the continuous beam following the steps outlined above.

[0086] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0087] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0088] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A cantilever construction formwork for bridges, characterized in that, include: The main truss (1) includes a first connecting section (101) for installing the under-bearing hanging basket, and a second connecting section (102) detachably connected to the first connecting section (101). When the No. 1 blocks on both sides of the No. 0 block of the bridge are constructed simultaneously, the first connecting sections (101) are arranged in pairs and connected to each other. When the subsequent segments connected to the No. 1 block of the bridge are constructed, the first connecting section (101) and the second connecting section (102) are connected to each other.

2. The cantilever construction formwork for bridges as described in claim 1, characterized in that: It also includes a rear upper crossbeam (2) for suspending the main truss (1), the rear upper crossbeam (2) including a C-hook crossbeam (201) and C-shaped hooks (202) connected to both ends of the C-hook crossbeam (201).

3. The cantilever construction formwork for bridges as described in claim 2, characterized in that: It also includes a traveling platform (3) connected to the rear upper crossbeam (2), on which a rotary crane (4) for hoisting the steel cage is installed.

4. The cantilever construction formwork for bridges as described in claim 3, characterized in that: The accompanying platform (3) includes a walking beam (301) arranged parallel to the rear upper crossbeam (2), and a connecting system (302) connecting the walking beam (301) and the rear upper crossbeam (2), wherein the second connecting section (102) is detachably connected to the walking beam (301).

5. The cantilever construction formwork for bridges as described in claim 2, characterized in that: The C-shaped hook (202) is fitted with a hanging frame (5) at its end. The hanging frame (5) is connected to the first connecting section (101) via a pivot. The first connecting section (101) or the second connecting section (102) is provided with a first lifting member (6) for adjusting the tilt angle of the first connecting section (101).

6. The cantilever construction formwork for bridges as described in claim 5, characterized in that: The hanging frame (5) is connected to an anchor rod (7) that passes through the C-hook beam (201). The C-hook beam (201) is provided with a second lifting member (8) for moving the anchor rod (7) to raise and lower the hanging frame (5).

7. The bridge cantilever construction formwork as described in claim 1, characterized in that: It also includes a front upper crossbeam (9) for connecting the first connecting sections (101) on both sides of the bridge, wherein the front upper crossbeam (9) is provided with a detachable middle section (901).

8. The cantilever construction formwork for bridges as described in claim 1, characterized in that: It also includes a bottom mold (10), a side mold (11) and an inner mold (12), wherein the bottom mold (10) is disposed on the lower support hanging basket and the side mold (11) is supported on the main truss (1).

9. The bridge cantilever construction formwork as described in claim 1, characterized in that: The under-support hanging basket includes a bottom basket template (13), and the four corners of the bottom basket template (13) are connected to the first connecting sections (101) on both sides of the bridge through suspension members (14).

10. The bridge cantilever construction formwork as described in claim 9, characterized in that: The suspension component (14) includes a suspension rod (141) and a third lifting component (142) disposed on the first connecting section (101). The third lifting component (142) is used to raise the suspension rod (141). The suspension rod (141) is connected to the bottom basket template (13) by a sling (143).

Images