Foldable construction platform and construction method for cast-in-place continuous section of fabricated bridge

Abstract

The invention provides a foldable construction platform for a cast-in-place continuous section of a fabricated bridge and a construction method, and relates to the technical field of bridge construction. The foldable construction platform comprises a crawling ladder assembly, a supporting assembly and a rotating assembly. Wherein the top end of the crawling ladder assembly is fixedly connected with the top surface of a bridge flange plate; the supporting assembly is arranged at the bottom end of the crawling ladder assembly, one end of the supporting assembly is detachably connected with a check block on a bridge cover beam, the other end of the supporting assembly is rotationally connected with the bottom end of the crawling ladder assembly, and the other end of the supporting assembly can rotate relative to the crawling ladder assembly; the rotating assembly is arranged between the bottom end of the ladder stand assembly and the other end of the supporting assembly and enables the supporting assembly to rotate relative to the ladder stand assembly. According to the method, the construction safety and efficiency can be improved, and the construction cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly to a foldable construction platform and construction method for the cast-in-place continuous section of an assembled bridge. Background Art

[0002] The main construction method for an assembled prestressed reinforced concrete simply supported and then continuously structured bridge is as follows: after the adjacent two-span precast beams are installed in place, the cast-in-place continuous section at the pier top, that is, the cast-in-place cross beam at the middle support of the assembled continuous beam, needs to be constructed, and then the negative moment prestressed project is constructed to convert from a simply supported beam to a continuous beam. Since the outer flange plate of the side beam of the bridge is outside the pier cap of the pier column, the outermost web of the side beam body is adjacent to the pier cap stop block of the pier column, and the top width of the stop block is generally only about 30 cm, there is not enough construction operation area for construction personnel to approach for safe construction. When constructing the cast-in-place continuous section at the pier top (that is, the cross beam at the middle support of the continuous beam), it is difficult to install and reinforce the steel bars, side molds, bottom molds of the outer flange plates of the side beams, etc. at both ends in the transverse direction of the bridge. It is necessary to set up a reliable construction operation platform in the area outside the pier cap stop block under the outer flange plate of the side beam of the bridge. The traditional construction platform method is to erect a scaffolding, but there are problems such as a large amount of work for the erection and dismantling of the scaffolding, labor-consuming, time-consuming, high cost, low efficiency, and it is not applicable to high pier bridges or situations such as crossing rivers, roads, and canyons. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a foldable construction platform and construction method for the cast-in-place continuous section of an assembled bridge to improve construction safety and efficiency and reduce construction costs.

[0004] To solve the above technical problem, the technical solution of the present invention is as follows:

[0005] A foldable construction platform for the cast-in-place continuous section of an assembled bridge, comprising:

[0006] A ladder component, the top end of the ladder component is fixedly connected to the top surface of the bridge flange plate;

[0007] A support component, the support component is arranged at the bottom end of the ladder component, one end of the support component is detachably connected to the stop block on the bridge pier cap, the other end of the support component is rotatably connected to the bottom end of the ladder component, and the other end of the support component can rotate relative to the ladder component; and

[0008] A rotating component, the rotating component is arranged between the bottom end of the ladder component and the other end of the support component and enables the support component to rotate relative to the ladder component.

[0009] In one embodiment, the ladder component includes:

[0010] Two vertical support ribs, the two vertical support ribs are arranged in parallel, and the tops of the two vertical support ribs are fixedly connected to one side of the bridge anti-collision wall; and

[0011] Multiple horizontal support ribs, the multiple horizontal support ribs are evenly distributed between the two vertical support ribs.

[0012] In one embodiment, the tops of the two vertical support ribs are provided with first hooks.

[0013] In one embodiment, the rotating component includes:

[0014] A first fixing nut, the first fixing nut is arranged at the bottom end of the ladder component;

[0015] A second fixing nut, the second fixing nut is arranged at the other end of the support component, and the second fixing nut is opposite and misaligned with the first fixing nut; and

[0016] A rotating shaft, the rotating shaft passes through the first fixing nut and the second fixing nut;

[0017] In one embodiment, the support component is a support platform, and the support platform includes:

[0018] A platform main body, the platform main body is a mesh structure for carrying construction workers and construction materials; and

[0019] A platform frame, the platform frame is arranged on both sides of the platform main body and is fixedly connected to both sides of the platform main body respectively. One end of the platform frame is detachably connected to a stop block on the bridge cap beam, and the other end of the platform frame is rotatably connected to the bottom end of the ladder component.

[0020] In one embodiment, one end of the platform frame is provided with a second hook for detachably connecting to the stop block on the bridge cap beam.

[0021] In one embodiment, one end of the platform frame is provided with a hanging rope, and by controlling the retraction and release of the hanging rope, the rotation angle and position of the platform frame are adjusted so that the platform frame can be switched between a vertical position, a horizontal position, and an intermediate position.

[0022] In one embodiment, it further includes:

[0023] An anchoring and limiting component, the anchoring and limiting component is arranged at the connection between the ladder component and the bridge flange for anchoring the top of the ladder component to the bridge flange.

[0024] In one embodiment, the materials of the ladder component and the support component are both steel bars or steel sections.

[0025] A construction method for a foldable construction platform for the cast-in-situ continuous section of the prefabricated bridge, comprising the following steps:

[0026] Loosen the hanging rope and control the support platform to rotate to the vertical position;

[0027] Lift the hanging rope and control the support platform to rotate and lift it to the inside of the ladder assembly;

[0028] Install the top of the ladder assembly to the top surface of the bridge flange plate, loosen the hanging rope and control the support platform to rotate to a horizontal position, and adjust the support platform laterally along the bridge so that one end of the support platform is detachably connected to the block on the bridge cap beam;

[0029] The top of the ladder assembly is fixedly connected to the top surface of the bridge flange plate, and an anchor limit assembly is set at the connection point to anchor the ladder assembly to the bridge flange plate. The installation of the foldable construction platform is now completed and construction work can be carried out.

[0030] The above solution of the present invention includes at least the following beneficial effects:

[0031] The above-mentioned solution of the present invention provides a foldable construction platform and construction method for a cast-in-place continuous section of an assembled bridge; wherein, the foldable construction platform includes a ladder assembly, a support assembly, and a rotating assembly. The top end of the ladder assembly is fixedly connected to the top surface of the bridge flange plate; the support assembly is arranged at the bottom end of the ladder assembly, one end of the support assembly is detachably connected to the block on the bridge cap beam, the other end of the support assembly is rotatably connected to the bottom end of the ladder assembly, and the other end of the support assembly can rotate relative to the ladder assembly; the rotating assembly is arranged between the bottom end of the ladder assembly and the other end of the support assembly, and enables the support assembly to rotate relative to the ladder assembly. The foldable construction platform and construction method provided by the present invention can improve construction safety and efficiency and reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front view of the unfolded foldable construction platform of the cast-in-situ continuous section of the assembled bridge provided by an embodiment of the present invention;

[0033] Figure 2 This is a side view of the unfolded foldable construction platform of a cast-in-situ continuous section of an assembled bridge provided by an optional embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the installation of a foldable construction platform and a bridge for a cast-in-situ continuous section of an assembled bridge provided by an optional embodiment of the present invention.

[0035] Description of the reference numerals in the drawings: 1. Ladder component; 2. Support component; 3. Vertical support rib; 4. Horizontal support rib; 5. First hook; 6. Bridge flange; 7. Exposed reinforcement embedded in the anti-collision wall; 8. Bridge bent cap; 9. Stop block; 10. Rotating shaft; 11. Platform main body; 12. Platform border; 13. Second hook; 14. Hanging rope. Detailed implementation manners

[0036] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0037] In the following description, certain specific details are set forth for the purpose of explaining various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments can be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail so as not to unnecessarily obscure the description of the embodiments.

[0038] References to "one embodiment" or "an embodiment" throughout the specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" throughout the specification do not necessarily all refer to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0039] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, the orientation or positional relationship indicated by "front", "rear", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Referring to Figures 1 to 3 , an embodiment of the present invention provides a foldable construction platform for the cast-in-place continuous section of an assembled bridge, which may include a ladder component 1, a support component 2, and a rotating component. Among them, the top end of the ladder component 1 is fixedly connected to the top surface of the bridge flange 6; the support component 2 is arranged at the bottom end of the ladder component 1, one end of the support component 2 is detachably connected to the block 9 on the bridge bent cap 8, the other end of the support component 2 is rotatably connected to the bottom end of the ladder component 1, and the other end of the support component 2 can rotate relative to the ladder component 1; the rotating component is arranged between the bottom end of the ladder component 1 and the other end of the support component 2, and enables the support component 2 to rotate relative to the ladder component 1.

[0042] In this embodiment, the support component 2 is a platform for supporting construction workers and materials, and the ladder component 1 is a hanging unit, whose top end is fixedly connected to the bridge flange 6 and the bottom end is rotatably connected to the support component 2, so that the support component 2 is located below the bridge deck for convenient construction operations; here, the support component 2 is rotatably connected to the ladder component through the rotating component, so that the support component 2 can rotate around the ladder component 1, so that the entire support component 2 can be folded or unfolded at a certain angle relative to the ladder component; here, the lengths of the ladder component 1 and the support component 2 can be set according to the size of the actual construction bridge;

[0043] According to the foldable construction platform of the embodiment of the present invention, by setting like this, the production of the entire construction platform is simple, the cost is low, and the installation and disassembly operations are convenient; at the same time, by setting the ladder component, it is convenient for construction workers to go up and down, and by setting the support component 2, there is no need to separately build a scaffolding during the construction process, so as to improve the construction efficiency and reduce the construction cost; and the foldable construction platform has a folding function, is convenient to carry, and has strong adaptability, and is widely used in various bridge projects, especially suitable for the construction of the cast-in-place continuous section of assembled bridges.

[0044] In an optional embodiment of the present invention, the materials of the ladder component 1 and the support component 2 are both steel bars or steel sections to ensure the strength of the entire foldable construction platform and thus ensure the safety of construction workers.

[0045] Continuing to refer to Figures 1 to 3In an optional embodiment of the present invention, the ladder assembly 1 may include two vertical support bars 3 and multiple transverse support bars 4. The two vertical support bars 3 are arranged in parallel, and the top ends of the two vertical support bars 3 are fixedly connected to the top surface of the bridge flange plate 6; the multiple transverse support bars 4 are evenly distributed between the two vertical support bars 3.

[0046] In this embodiment, the ladder assembly 1 is fixedly connected by vertical support ribs 3 and multiple transverse support ribs 4. Two vertical support ribs 3 are arranged in parallel and form the main support structure of the ladder assembly 1. Multiple transverse support ribs 4 are welded and fixed between the two vertical support ribs 3 to form steps for construction workers to step on. Here, the multiple transverse support ribs 4 can be configured as a plate-like structure to facilitate stepping.

[0047] In an optional embodiment of the present invention, first hooks 5 are provided at the top ends of the two vertical support bars 3. The first hooks 5 may be integrally formed with the top ends of the vertical support bars 3, or may be separate hook members welded to the top ends of the vertical support bars 3. When the foldable construction platform is installed, a latch member is provided between the first hooks 5 and the pre-embedded exposed reinforcement 7 of the crash barrier, and the first hooks 5 are anchored to the pre-embedded exposed reinforcement 7 of the crash barrier to securely connect the top end of the ladder assembly 1 to the bridge flange plate 6, thereby securing the top end of the foldable construction platform.

[0048] Continue reading Figures 1 to 3 In an optional embodiment of the present invention, the support assembly 2 is a support platform, which may include a platform body 11 and a platform frame. The platform body 11 is a mesh structure used to carry construction workers and construction materials; the platform frame 12 is provided on both sides of the platform body 11 and is fixedly connected to both sides of the platform body 11. One end of the platform frame 12 is detachably connected to the stopper 9 on the bridge cap beam 8, and the other end of the platform frame 12 is rotatably connected to the bottom end of the ladder assembly 1.

[0049] In this embodiment, the platform body 11 can be a mesh structure formed by welding multiple longitudinal and transverse steel bars, used to support construction personnel and construction materials. The platform frame 12 can be a frame-like structure composed of main bars, which is connected to both sides of the platform body 11 and can be fixed by welding. One end of the platform frame 12 is clamped and supported on the block 9 on the bridge cap beam 8, and the other end of the platform frame 12 is rotatably connected to the bottom end of the ladder assembly 1 through a rotating assembly, allowing the entire support platform to rotate around the rotating assembly and then expand or fold relative to the ladder assembly 1.

[0050] Preferably, a second hook 13 is provided at one end of the platform frame 12 for detachable connection with the block 9 on the bridge cap beam 8; the second hook 13 here can be integrally formed with one end of the platform frame 12, or it can be a hook component that is separately welded and fixed; the second hook 13 can also be an obtuse-angled hook, which is used to buckle on the inner side of the block 9 on the bridge cap beam 8 to limit the support platform from moving outward, ensuring the stability of the support platform supported on the top surface of the block 9, and thereby ensuring the stability of the entire foldable construction platform.

[0051] In an optional embodiment of the present invention, a hanging rope 14 is provided at one end of the platform body 11, and the rotation angle and position of the platform frame 12 are adjusted by controlling the retraction and extension of the hanging rope 14, so that the platform frame 12 can be converted between a vertical position, a horizontal position and an intermediate position.

[0052] In this embodiment, one end of the hanging rope 14 is disposed at one end of the platform body 11, and the other end of the hanging rope 14 is located at the top of the support assembly 1. By controlling the retraction and extension of the hanging rope 14, the rotation angle and position of the support platform can be adjusted, thereby achieving flexible conversion and positioning of the support platform between vertical, horizontal, and intermediate positions. By precisely controlling the retraction and extension length and tension of the hanging rope 14 to adjust the rotation angle and position of the support platform, the support platform can be stably and reliably supported on the block 9 and remains stable during construction operations, providing a safe and reliable working environment for construction personnel and thus ensuring construction safety. Preferably, the hanging rope 14 can be made of high-strength nylon rope.

[0053] In an optional embodiment of the present invention, the rotating assembly may include a first fixing nut, a second fixing nut, and a rotating shaft 10. The first fixing nut is disposed at the bottom end of the ladder assembly 1; the second fixing nut is disposed at the other end of the support assembly 2, and the second fixing nut is disposed opposite and offset from the first fixing nut; and the rotating shaft 10 is disposed through the first and second fixing nuts.

[0054] In this embodiment, the first fixing nut is fixedly connected to the bottom end of the vertical support rib 3 of the ladder assembly 1; the second fixing nut is fixedly connected to the other end of the support frame 12 in the support assembly 2; the first fixing nut and the second fixing nut are nuts with internal threads, and the outer periphery of the rotating shaft 10 is provided with external threads that match the internal threads, and the rotating shaft 10 is inserted between the first fixing nut and the second fixing nut, so that when the hanging rope 14 is loosened or lifted, the support assembly 2 can be rotated relative to the ladder assembly 1;

[0055] Here, the first fixing nut and the second fixing nut may also be replaced by other annular components with similar functions to adapt to different construction environments and material supply conditions.

[0056] In an optional embodiment of the present invention, the foldable construction platform of the above-mentioned cast-in-place continuous section of the prefabricated bridge may also include an anchoring limit assembly, which is arranged at the connection between the ladder assembly 1 and the bridge flange plate 6 and is used to anchor the top of the ladder assembly 1 to the bridge flange plate 6.

[0057] In this embodiment, the anchoring and limiting assembly is anchored to the embedded exposed reinforcement 7 of the crash barrier to limit the top of the ladder assembly 1 and the first hook 5 to the bridge flange plate 6, thereby enhancing the overall stability of the foldable construction platform.

[0058] Here, the anchoring and limiting assembly is composed of transverse pins, which can be one or more anchoring steel bars. The transverse steel bars are horizontally inserted between the pre-embedded exposed reinforcement 7 of the crash barrier and the first hook 5 to form an anchoring pin. This transmits the lateral force of the ladder assembly 1 and the first hook 5 to the pre-embedded exposed reinforcement 7 of the crash barrier, thereby limiting the lateral displacement of the ladder assembly 1 and the first hook 5. The anchoring and limiting assembly can also be channel steel, angle steel, or I-beam.

[0059] Here, the material of the anchoring limit assembly is the same as or similar to that of the ladder assembly 1 and the support assembly 2, and its strength meets the load requirements that the construction platform bears during use; the length and size of the anchoring limit assembly can be customized according to the thickness of the bridge flange plate 6 and the position of the embedded steel bars to ensure that the anchoring limit assembly can fit tightly between the embedded exposed steel bars 7 of the crash wall and the first hook 5, and provide sufficient anchoring force.

[0060] Preferably, the anchoring limit assembly is provided through the first hook 5 at the top of the ladder assembly 1 to evenly distribute and enhance the anchoring effect of the entire foldable construction platform, thereby improving the stability and safety of the foldable construction platform.

[0061] Here, the anchoring limit assembly is arranged and connected to the pre-embedded exposed reinforcement 7 of the anti-collision wall and the first hook 5 in the following manner:

[0062] After the top hook of the ladder assembly is installed on the pre-embedded exposed reinforcement 7 of the crash barrier on the bridge deck, the transverse reinforcement of the anchor limiter assembly is horizontally inserted between the pre-embedded exposed reinforcement 7 and the first hook 5, forming an anchor pin. This transmits the lateral force of the ladder assembly 1 and the first hook 5 to the pre-embedded exposed reinforcement 7 of the crash barrier, thereby limiting the lateral displacement of the ladder assembly 1 and the first hook 5. Elastic gaskets or rubber pads are installed between the anchor limiter assembly, the pre-embedded exposed reinforcement 7 of the crash barrier, and the first hook 5 to reduce vibration and impact, and improve the connection tightness and durability of the anchor limiter component.

[0063] Preferably, the anchoring and limiting assembly can also be connected to the supporting assembly 2 by a rope or chain to form a double insurance, further enhancing the stability of the foldable construction platform and preventing the foldable construction platform from accidentally rotating or displacing during use.

[0064] An embodiment of the present invention also provides a construction method for a foldable construction platform of a cast-in-place continuous section of a prefabricated bridge based on the above-described embodiment, including the following steps:

[0065] Step 11: Loosen the hanging rope 14 and control the support platform to rotate to the vertical position;

[0066] Step 12: Lift the hanging rope 14 and control the support platform to rotate and lift to the inside of the ladder assembly 1;

[0067] Step 13: Install the top of the ladder assembly 1 on the top surface of the bridge flange 6, loosen the hanging rope 14, and control the support platform to rotate to the horizontal position. Move the support platform horizontally along the bridge to detachably connect one end of the support platform to the stop block on the bridge cap beam 8;

[0068] Step 14: Fix the top of the ladder assembly 1 to the top surface of the bridge flange 6, and set an anchoring and limiting component at the connection to support and anchor the ladder assembly 1 on the bridge flange 6. Thus, the installation of the foldable construction platform is completed, and construction operations can be carried out.

[0069] When installing the foldable construction platform, first grasp the first hook 5 at the top of the ladder assembly 1, loosen the hanging rope 14, and rotate the support platform to the vertical position to check the integrity of each part of the device; then lift the hanging rope 14 and rotate and lift the support platform to the inside of the ladder assembly 1, that is, to the position below the first hook 5;

[0070] Further, accurately install the first hook 5 at the top of the ladder assembly 1 at the exposed reinforcement 7 embedded in the anti-collision wall, then slowly lower the hanging rope 14 to smoothly rotate the support platform to the horizontal position, and at the same time move the support platform horizontally along the bridge to accurately install the second hook 13 at one end of the support platform inside the stop block 9, ensuring that the outer end of the support platform can be stably supported on the top surface of the stop block 9 and achieving reliable limit fixation through the second hook 13; even further, closely place the first hook 5 against the exposed part of the exposed reinforcement 7 of the anti-collision wall embedded reinforcement, insert the anchoring and limiting component, and firmly anchor the entire foldable construction platform on the anti-collision wall embedded reinforcement 7. Thus, all installation work of the foldable construction platform is completed;

[0071] Construction workers climb down from the bridge deck along the ladder assembly 1 to the support platform, hang the safety rope on the ladder assembly 1, and once again comprehensively check the safety reliability of the foldable construction platform and whether all safety protection measures are in place. After confirmation, formal construction operations can be carried out; after the construction operations are completed, remove and store each component in the reverse order of the installation steps, clean the construction site, and properly store the device for use at the next construction site.

[0072] The collapsible construction platform provided by the embodiments of the present invention is simple to manufacture, low in cost, convenient for installation and disassembly operations, convenient for construction workers to go up and down, and portable, flexible, and highly adaptable. It can improve construction efficiency and construction safety, and is especially suitable for the cast-in-place continuous segment construction of prefabricated bridges. It can be widely applied to various bridge projects.

[0073] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A foldable construction platform for cast-in-situ continuous sections of assembled bridges, characterized in that: include: A ladder assembly, the top end of which is fixedly connected to the top surface of the bridge flange plate; A support assembly, wherein the support assembly is arranged at the bottom end of the ladder assembly, one end of the support assembly is detachably connected to a stopper on the bridge cap beam, and the other end of the support assembly is rotatably connected to the bottom end of the ladder assembly, and the other end of the support assembly can rotate relative to the ladder assembly; as well as The rotating assembly is arranged between the bottom end of the ladder assembly and the other end of the support assembly, and enables the support assembly to rotate relative to the ladder assembly.

2. The foldable construction platform for cast-in-situ continuous sections of prefabricated bridges according to claim 1, characterized in that: The ladder assembly comprises: Two vertical support bars, the two vertical support bars are arranged in parallel, and the top ends of the two vertical support bars are fixedly connected to one side of the bridge crash barrier; and Multiple transverse support ribs are evenly distributed between the two vertical support ribs.

3. The foldable construction platform for the cast-in-situ continuous section of an assembled bridge according to claim 2, characterized in that: The top ends of the two vertical support ribs are provided with first hooks.

4. The foldable construction platform for cast-in-situ continuous sections of prefabricated bridges according to claim 1, characterized in that: The rotating assembly comprises: a first fixing nut, the first fixing nut being arranged at the bottom end of the ladder assembly; a second fixing nut, the second fixing nut being disposed at the other end of the support assembly and being opposite to and offset from the first fixing nut; and A rotating shaft is provided passing through the first fixing nut and the second fixing nut.

5. The foldable construction platform for the cast-in-situ continuous section of an assembled bridge according to claim 1, characterized in that: The support assembly is a support platform, and the support platform includes: A platform body, which is a mesh structure and is used to carry construction personnel and construction materials; and The platform frame is arranged on both sides of the platform body and is fixedly connected to both sides of the platform body respectively. One end of the platform frame is detachably connected to the block on the bridge cap beam, and the other end of the platform frame is rotatably connected to the bottom end of the ladder assembly.

6. The foldable construction platform for the cast-in-situ continuous section of an assembled bridge according to claim 5, characterized in that: A second hook is provided at one end of the platform frame so as to be detachably connected to the stopper on the bridge cap beam.

7. The foldable construction platform for the cast-in-situ continuous section of an assembled bridge according to claim 5, characterized in that: A hanging rope is provided at one end of the platform frame, and the rotation angle and position of the platform frame are adjusted by controlling the retraction and extension of the hanging rope, so that the platform frame can be converted between a vertical position, a horizontal position and an intermediate position.

8. The foldable construction platform for cast-in-situ continuous sections of prefabricated bridges according to claim 1, characterized in that: Also includes: An anchoring and limiting assembly is arranged at the connection between the ladder assembly and the bridge flange plate, and is used to anchor the top of the ladder assembly to the bridge flange plate.

9. The foldable construction platform for cast-in-situ continuous sections of prefabricated bridges according to claim 1, characterized in that: The materials of the ladder assembly and the support assembly are both steel bars or section steel.

10. A construction method of a foldable construction platform for a cast-in-situ continuous section of an assembled bridge based on claims 1 to 9, characterized in that: The following steps are involved: Loosen the hanging rope and control the support platform to rotate to the vertical position; Lift the hanging rope and control the support platform to rotate and lift it to the inside of the ladder assembly; Install the top of the ladder assembly to the top surface of the bridge flange plate, loosen the hanging rope and control the support platform to rotate to a horizontal position, and adjust the support platform laterally along the bridge so that one end of the support platform is detachably connected to the block on the bridge cap beam; The top of the ladder assembly is fixedly connected to the top surface of the bridge flange plate, and an anchor limit assembly is set at the connection point to anchor the ladder assembly to the bridge flange plate. The installation of the foldable construction platform is now completed and construction work can be carried out.

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