A kind of assembled construction platform and installation method thereof

Abstract

The present invention provides an assembled construction platform, including a limit assembly, a reinforcement assembly, a height adjustment assembly and a plurality of hoisting units, wherein the plurality of hoisting units are arranged at intervals, and the hoisting unit includes two load-bearing members, and the two opposite ends of the two load-bearing members are rotatably connected so that the two load-bearing members can be in a folded state; the limit assembly and the two load-bearing members of the plurality of hoisting units can be detachably connected; a reinforcement assembly is provided between every two hoisting units, and the reinforcement assembly is detachably connected to the load-bearing members of the adjacent hoisting units respectively; the height adjustment assembly is provided with an operation groove for the reinforcement assembly and the hoisting unit to pass through, and the height adjustment assembly is connected to the load-bearing member, and the height adjustment assembly can drive the hoisting unit to move in the height direction to adjust the height of the hoisting unit, which not only improves the working efficiency of casting the diaphragm but also can recycle the assembled construction platform and improve the construction environment of the operators. The present invention also provides an installation method of the assembled construction platform.

Description

[Technical field]

[0001] The present invention relates to the technical field of bridge construction, and in particular to an assembled construction platform and an installation method thereof. [Background technology]

[0002] The hollow thin-walled piers of bridges are flexible structures in terms of stress characteristics. The diaphragms set at the corresponding height position on the inner edge of the pier body are an important permanent structure to improve the overall stiffness and stability of the pier body, and several diaphragms are set in the height direction of the pier body. The construction of hollow thin-walled piers is usually carried out in sections for steel bar installation and concrete pouring. That is, after the concrete of the pier body poured in the previous section is formed and reaches the specified strength, the next section of the pier body is constructed upwards. The existing diaphragm construction process usually requires pre-embedded steel brackets or steel bars at appropriate positions on the inner wall of the previous pouring section of the formed pier body as the main load-bearing support, and then a full steel platform is erected using welding technology as the construction platform for the diaphragm. Although a large number of construction practices in the past have proved the effectiveness of this type of diaphragm construction platform, the following defects cannot be avoided:

[0003] 1. Extremely poor economic performance

[0004] Under this type of construction platform, once the diaphragm is cast, the cast section of the pier body is "capped", leaving only a narrow manhole in the middle of the diaphragm as an upper and lower passage. The bottom of the diaphragm is in close contact with the full steel platform below it, so it is extremely difficult to dismantle and recycle the platform steel. In many construction practices, in order to ensure the construction progress, the construction platform below the diaphragm is directly abandoned. The cross-sectional size of the hollow thin-walled pier is relatively large. According to statistics, the amount of steel used to build the steel platform for the construction of its diaphragm is usually around 8t to 12t. According to the average price of steel procurement in recent years, plus transportation fees, processing fees, labor costs and machinery costs, the installation cost of the steel platform is about 6,000 yuan / t. If it is abandoned, the loss cost of each diaphragm is about 48,000 yuan to 72,000 yuan. If the platform steel is recycled, the operator must be lowered to the bottom of the diaphragm through the diaphragm manhole using professional hoists for dismantling. Since the platform is constructed by welding, the operators have to use oxygen cutting or grinding wheel saw cutting to "dismember" the platform, and then lift them out one by one through the manhole. However, due to the limitations of actual construction conditions, the recycling rate of platform steel using this method usually does not exceed 30%. In addition, the recycled steel is difficult to use as structural steel due to the excessive cutting damage and can only be treated as scrap steel.

[0005] 2. It does not meet the requirements of prefabricated construction, has low operating efficiency and poses great safety hazards

[0006] The installation method of this type of construction platform is mainly pre-embedding and welding, and the removal method is mainly cutting with tools, which is a high-altitude operation with relatively high hidden dangers. In addition, during the initial installation and the entire removal process, the workers have no working surface under their feet and must be suspended in mid-air with professional hoists. It can be seen that the installation and removal of this type of diaphragm construction platform does not meet the requirements of prefabricated construction, and the operation efficiency is low, with great safety hazards.

[0007] 3. The occupational health of operators is not guaranteed:

[0008] Since the cast section of the pier body was "capped" after the construction of the diaphragm was completed, the construction conditions in the inner cavity of the pier body below the manhole were poor when the platform was dismantled. On the one hand, the workers were working in an environment with low visibility and were in a suspended state; on the other hand, the waste smoke, waste gas, powder and sparks generated when cutting the platform steel could not be ignored as they posed a health hazard to the workers in this relatively closed environment. [Summary of the invention]

[0009] The present invention aims to solve at least one of the above-mentioned technical problems and provides an assembled construction platform and an installation method thereof, which not only improves the working efficiency of casting the diaphragm but also can recycle the assembled construction platform and improve the construction environment of the workers.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] An assembled construction platform comprises a limit assembly, a reinforcement assembly, a height adjustment assembly and a plurality of hoisting units, wherein the plurality of hoisting units are arranged at intervals, the hoisting units comprising two load-bearing members, the two opposite ends of the two load-bearing members being rotatably connected so that the two load-bearing members can be in a folded state; the limit assembly and the two load-bearing members of the plurality of hoisting units are detachably connected so as to prevent the two load-bearing members from rotating relative to each other; the reinforcement assembly is provided between every two hoisting units, and the reinforcement assembly is detachably connected to the load-bearing members of adjacent hoisting units respectively; the height adjustment assembly is provided with an operating groove through which the reinforcement assembly and the hoisting unit pass, the height adjustment assembly is connected to the load-bearing member, and the height adjustment assembly can drive the hoisting unit to move in the height direction so as to adjust the height of the hoisting unit.

[0012] Furthermore, the reinforcement assembly includes a lower hanging steel wire rope and a plurality of distribution beams, wherein the plurality of distribution beams are spaced apart along the length direction of the load-bearing component, and the opposite ends of each distribution beam are detachably connected to the load-bearing component of an adjacent lifting unit, respectively. The lower hanging steel wire rope extends along the length direction of the load-bearing component, and the lower hanging steel wire rope connects a plurality of distribution beams.

[0013] Furthermore, the load-bearing member includes a crossbeam, a hanging point cover plate, a rotating plate and a plurality of positioning slot plates, the hanging point cover plate is covered on the outside of the crossbeam, one end of the rotating plate is connected to one end of the crossbeam facing the other load-bearing member, the other end of the rotating plate is rotatably connected to the rotating plate of the other load-bearing member, and a plurality of positioning slot plates are arranged at intervals along the length direction of the crossbeam; the limiting assembly is detachably connected to the crossbeams of the two load-bearing members; one end of the height adjustment assembly is connected to the hanging point cover plate and the crossbeam; the opposite ends of the distribution beam are respectively detachably connected to the positioning slot plates on the adjacent crossbeams; the lower hanging wire rope extends along the length direction of the crossbeam.

[0014] Furthermore, the assembled construction platform includes reinforcing screws, which are detachably passed through a plurality of positioning slot plates of the load-bearing component and a plurality of distribution beams of the reinforcement assembly to detachably connect the distribution beams and the positioning slot plates together.

[0015] Furthermore, the limiting assembly includes two groups of brake clamps and a limiting beam, the two groups of brake clamps are respectively detachably connected to the cross beams of the two load-bearing parts, and the opposite sides of the limiting beam are respectively detachably connected to the two groups of brake clamps on the lifting unit.

[0016] Furthermore, the height adjusting assembly includes a top seat and a plurality of height adjusting rods. The top seat is arranged relative to the cross beam. A plurality of working grooves are penetrated through the top seat. One ends of the plurality of height adjusting rods are detachably connected to the lifting point package plate and the cross beam, and the other ends of the plurality of height adjusting rods extend in a direction away from the lifting unit and are movably connected to the top seat.

[0017] Furthermore, the two load-bearing members are rotatably connected via a rotating pin.

[0018] A method for installing an assembled construction platform comprises the following steps:

[0019] Providing device: providing the above-mentioned assembled construction platform and lifting device;

[0020] Install the height adjustment component: install the height adjustment component at the top of the cast section of the pier body;

[0021] Hoisting and installing the hoisting unit: rotate the two load-bearing members to a folded state, use a hoisting device to hoist the two load-bearing members in the folded state from the working trough to the inner cavity of the pier body at the cast section of the pier body, unfold the two load-bearing members, and connect the height adjustment assembly to the load-bearing members; repeat the above steps for several hoisting units to complete the hoisting and installation operations of several hoisting units;

[0022] Installing the limiting assembly: detachably connecting the limiting assembly to two of the load-bearing members of a plurality of the hanging units;

[0023] Installing the reinforcement components: using a lifting device to lift the reinforcement components from the working trough to the inner cavity of the pier body at the cast section of the pier body, and detachably connecting the reinforcement components to the load-bearing parts of the adjacent lifting units;

[0024] Height adjustment: The height adjustment component is used to drive the hoisting unit to move in the height direction to adjust the height of the hoisting unit and complete the installation of the assembled construction platform.

[0025] Furthermore, the "providing device" also provides a hydraulic through-hole jack, which is used in the "height adjustment" to assist in adjusting the overall height of the plurality of hoisting units.

[0026] Furthermore, in the "hoisting and installation hoisting unit", before connecting one end of the height adjusting component to the load-bearing member, a movable sleeve is movably put on the part of the height adjusting component located in the inner cavity of the pier body.

[0027] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0028] 1. The above-mentioned prefabricated construction platform hoists the two load-bearing parts in the folded state from the working groove to the inner cavity of the pier body of the cast section of the pier body, unfolds the two load-bearing parts and connects them with the height adjustment component, connects the limit component and the reinforcement component with several hoisting units to complete the construction of the prefabricated construction platform, and adjusts the height of the hoisting unit by the height adjustment component to complete the construction of the prefabricated construction platform in the inner cavity of the pier body. After the construction of the diaphragm is completed, the limit component is disassembled, the two load-bearing parts are rotated to the folded state and then hoisted out from the manhole, and then the height adjustment component is disassembled. It can be seen that the construction of the prefabricated construction platform only requires the installation and connection of each component, and the components can be disassembled and recycled after the construction of the diaphragm is completed. Compared with the prior art of erecting an all-steel platform using welding technology, the construction, disassembly and recycling of the prefabricated construction platform avoid the disadvantages of the pre-buried welding installation and cutting and dismantling links of the original process, and can greatly improve work efficiency.

[0029] In addition, the prefabricated construction platform does not require welding or cutting during on-site assembly and disassembly, which avoids the harm of waste smoke, waste gas, powder and sparks generated by the corresponding operations to the workers, thereby improving the construction environment for the workers.

[0030] 2. Several distribution beams are connected by hanging wire ropes. When installing and disassembling the prefabricated construction platform, several distribution beams can be lifted together into and out of the pier body cavity by hanging wire ropes, which not only improves the overall assembly degree of the entire prefabricated construction platform but also speeds up the construction progress.

[0031] 3. By connecting several distribution beams and several positioning slot plates through reinforcing screws, the connection stability of the beams in two adjacent lifting units can be strengthened, thereby improving the overall firmness and stability of the prefabricated construction platform.

Brief Description of the Drawings

[0032] Figure 1 It is a structural schematic diagram of an assembled construction platform in a preferred embodiment of the present invention.

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the lifting unit.

[0034] Figure 3 for Figure 2 Schematic diagram of two load-bearing members in a folded state.

[0035] Figure 4 It is a schematic diagram of the installation of load-bearing parts and reinforcement components.

[0036] Figure 5 A schematic diagram of the structure of the reinforcement component.

[0037] Figure 6 for Figure 5 Schematic diagram of the reinforcement component in the hoisted state.

[0038] Figure 7 It is a schematic diagram of the installation of load-bearing parts, reinforcement components and limit components.

[0039] Figure 8 This is a schematic diagram of the construction method of casting the inner diaphragm of a hollow thin-walled pier using a prefabricated construction platform.

[0040] In the attached drawings, 100-cast section of pier body, 200-cross partition, 201-manhole, 1-limiting assembly, 11-brake card plate, 111-cross plate, 112-vertical plate, 12-limiting beam, 2-height adjustment assembly, 21-top seat, 211-working groove, 212-strip pedestal, 213-strip steel, 214-gasket, 22-height adjustment rod, 3-hoisting unit, 31-load-bearing part, 311-cross beam, 312-hanging point package plate, 313-rotating plate, 314-positioning groove plate, 315-rotating pin, 316-base, 317-limiting plate, 4-reinforcement assembly, 41-hanging wire rope, 42-distribution beam, 5-reinforcement screw. [Specific implementation method]

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a component centered thereon. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a component centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] like Figures 1 to 8 As shown, a preferred embodiment of the present invention provides an assembled construction platform, which is used for the construction of the inner diaphragm 200 of the hollow thin-walled pier of the bridge, and comprises a limit assembly 1, a reinforcement assembly 4, a height adjustment assembly 2 and a plurality of hoisting units 3, wherein the plurality of hoisting units 3 are arranged at intervals, and the hoisting units 3 comprise two load-bearing members 31, and the two opposite ends of the two load-bearing members 31 are rotatably connected so that the two load-bearing members 31 can be in a folded state; the limit assembly 1 and the two load-bearing members 31 of the plurality of hoisting units 3 can be detachably connected to prevent the two load-bearing members 31 from rotating relative to each other; a reinforcement assembly 4 is provided between every two hoisting units 3, and the reinforcement assembly 4 is detachably connected to the load-bearing members 31 of two adjacent hoisting units 3; the height adjustment assembly 2 is provided with an operating groove 211 through which the reinforcement assembly 4 and the hoisting unit 3 pass, and the height adjustment assembly 2 is detachably connected to the load-bearing member 31, and the height adjustment assembly 2 can drive the hoisting unit 3 to move in the height direction to adjust the height of the hoisting unit 3.

[0045] The above-mentioned prefabricated construction platform hoists the two load-bearing members 31 in the folded state from the working groove 211 to the inner cavity of the pier body of the cast section 100 of the pier body, unfolds the two load-bearing members 31 and connects them to the height adjustment component 2, connects the limit component 1 and the reinforcement component 4 to a plurality of hoisting units 3, and completes the construction of the prefabricated construction platform. The height of the hoisting unit 3 is adjusted by the height adjustment component 2, and the prefabricated construction platform is completed in the inner cavity of the pier body; after the construction of the diaphragm 200 is completed, the limit component 1 is disassembled, the two load-bearing members 31 are rotated to the folded state and then hoisted out from the manhole 201, and then the height adjustment component 2 is disassembled. It can be seen that the construction of the prefabricated construction platform only requires the installation and connection of each component, and the components can be disassembled and recycled after the construction of the diaphragm 200 is completed. Compared with the prior art of using welding technology to erect an all-steel platform, the construction, disassembly and recycling of the prefabricated construction platform avoid the disadvantages of the pre-buried welding installation and cutting and removal links of the original process, and can greatly improve work efficiency. In addition, compared with the original process construction platform with a recycling rate of only 30%, the recycling rate of this product is close to 100%, and the reuse rate is also close to 100%.

[0046] In addition, in terms of occupational health and environmental protection, firstly, this product does not require welding and cutting during on-site assembly and disassembly, thus avoiding the harm to operators caused by waste smoke, waste gas, powder and sparks generated by the corresponding operations; secondly, during platform dismantling, operators can use the lifting unit 3 as the standing surface when working under the cross partition 200, and only need to perform simple operations such as removing bolts and hanging slings, making the construction environment safer.

[0047] In this embodiment, the load-bearing member 31 includes a crossbeam 311, a suspension point plate 312, a rotating plate 313 and a plurality of positioning slot plates 314. The suspension point plate 312 is coated on the outside of the crossbeam 311. Specifically, each load-bearing member 31 includes two crossbeams 311 and three suspension point plates 312. The crossbeam 311 is made of a light rectangular steel pipe. The two crossbeams 311 are arranged side by side. The three suspension point plates 312 are arranged at intervals along the length direction of the crossbeam 311 and each suspension point plate 312 is coated on the outside of the two crossbeams 311 to fix the two crossbeams 311. The suspension point plates 312 are provided with suspension holes on opposite sides in the vertical direction, and the crossbeams 311 are provided with avoidance holes corresponding to the suspension holes. A base 316 is provided at the bottom of one end of the two crossbeams 311. One end of the rotating plate 313 is connected to one end of the beam 311 facing the other load-bearing member 31, and the other end of the rotating plate 313 is rotatably connected to the rotating plate 313 of the other load-bearing member 31. Specifically, the rotating plate 313 is installed at one end of the beam 311 away from the base 316, and the rotating plate 313 is also rotatably connected to the rotating plate 313 of the other load-bearing member 31. In detail, the number of the rotating plates 313 is two groups, and the two groups of rotating plates 313 are respectively arranged at the same end of the two beams 311, and the end is facing the other load-bearing member. Each group includes two rotating plates 313, the two rotating plates 313 are respectively arranged along the width direction of the corresponding beam 311, one end of the two rotating plates 313 is respectively connected to the opposite sides of the corresponding beam 311, the two rotating plates 313 are installed on the beam 311 by bolts, and the other ends of the two rotating plates 313 are inclined and extended toward the ground and are respectively rotatably connected to the two groups of rotating plates 313 of another load-bearing member 31, so that the two load-bearing members 31 can be folded in half when rotating, see Figure 3 A plurality of positioning slot plates 314 are arranged at intervals along the length direction of the cross beam 311 . Specifically, a plurality of positioning slot plates 314 are arranged on both cross beams 311 . A plurality of positioning slot plates 314 on each cross beam 311 are arranged at intervals along the length direction of the cross beam 311 . Each positioning slot plate 314 is provided with a positioning reinforcement hole.

[0048] The position limiting assembly 1 and the cross beams 311 of the two load-bearing members 31 can be detachably connected. In this embodiment, the position limiting assembly 1 includes two groups of brake clamps 11 and a plurality of position limiting beams 12. The two groups of brake clamps 11 can be detachably connected to the cross beams 311 of the two load-bearing members 31, respectively. Specifically, each group of brake clamps 11 includes a plurality of brake clamps 11, and one brake clamp 11 can be detachably installed on the cross beam 311 of a load-bearing member 31 in a plurality of hoisting units 3; the brake clamp 11 includes a horizontal plate 111 and a vertical plate 112, the horizontal plate 111 and the vertical plate 112 are integrally formed, one side of the horizontal plate 111 is connected to one side of the vertical plate 112, and the horizontal plate 111 and the vertical plate 112 are perpendicular to each other; the horizontal plates 111 of the two brake clamps 11 are respectively installed on the cross beams 311 of the two load-bearing members 31 by screws and are located on one end of the corresponding cross beam 311 away from the base 316, so that a mounting groove is formed between the two vertical plates 112. The opposite sides of the limiting beam 12 are detachably connected to two groups of brake clamps 11 on several lifting units 3. Specifically, there are two limiting beams 12, and the two limiting beams 12 are spaced apart along the width direction of the cross beam 311. The opposite sides of each limiting beam 12 are detachably connected to the vertical plates 112 of the two groups of brake clamps 11 by screws to prevent the two load-bearing parts 31 from rotating relative to each other.

[0049] In this embodiment, the two load-bearing members 31 are rotatably connected by a rotating pin 315. Specifically, the rotating pin 315 passes through the ends of the two sets of rotating plates 313 away from the beam 311 in sequence, and a limit plate 317 is respectively set at the opposite ends of the rotating pin 315. The rotating pin 315 enables the finished hoisting unit 3 to have the functions of rotation and folding. The folded hoisting unit 3 can be hoisted out and recovered through the manhole 201 of the diaphragm 200 in sequence by using the existing lifting equipment on the construction site, such as a hand chain hoist and a tower crane. In terms of the lifting weight of the hoisting unit 3, taking the customized product load-bearing beam for the construction of the hollow pier diaphragm 200 with a wall thickness of 80cm and a cross-sectional size of 9.5m×9.5m as an example, the weight of a hoisting unit 3 is only 1.9t, which can be easily lifted by a 2.5t hand chain hoist.

[0050] In this embodiment, the number of reinforcement components 4 is several groups, and one reinforcement component 4 is detachably connected to the cross beam 311 of the load-bearing member 31 of two adjacent hoisting units 3. The reinforcement component 4 includes a hanging wire rope 41 and a plurality of distribution beams 42, and the plurality of distribution beams 42 are arranged at intervals along the length direction of the load-bearing member 31, and the opposite ends of each distribution beam 42 are detachably connected to the load-bearing member 31 of the adjacent hoisting unit 3. Specifically, the distribution beam 42 is a light rectangular tube, and the plurality of distribution beams 42 are arranged at intervals along the length direction of the cross beam 311, and the opposite ends of each distribution beam 42 are respectively located in the two positioning slot plates 314 of the adjacent hoisting unit 3, and the distribution beam 42 is provided with a plug-in hole corresponding to the positioning slot plate 314, so that the distribution beam 42 and the two positioning slot plates 314 can be detachably connected. The specific implementation method of the detachable connection between the distribution beam 42 and the two positioning slot plates 314 is as follows: the prefabricated construction platform includes a reinforcing screw 5, and the reinforcing screw 5 is detachably penetrated through a plurality of positioning slot plates 314 of the load-bearing component 31 and a plurality of distribution beams 42 of the reinforcement assembly 4 to detachably connect the distribution beam 42 and the positioning slot plates 314 together. Specifically, the reinforcing screw 5 passes through the positioning reinforcement hole of the positioning slot plate 314 and the plug-in hole of the distribution beam 42 and is reinforced with a nut to fix the distribution beam 42 and the positioning slot plate 314, thereby realizing the detachable connection between the distribution beam 42 and the two positioning slot plates 314, reinforcing the connection stability of the cross beam 311 in the two adjacent lifting units 3, and improving the overall firmness and stability of the prefabricated construction platform.

[0051] The lower hanging wire rope 41 extends along the length direction of the load-bearing member 31, and the lower hanging wire rope 41 is connected to a plurality of distribution beams 42. Specifically, the lower hanging wire rope 41 is roughly in the shape of a strip ring, and the lower hanging wire rope 41 as a whole extends along the length direction of the cross beam 311. The distribution beam 42 is provided with a wire rope clamp on the side facing the cross beam 311, and the wire rope clamp is located between the load-bearing members 31 of adjacent lifting units 3. The lower hanging wire rope 41 slides through the wire rope clamps of the plurality of distribution beams 42 and is connected to the plurality of distribution beams 42. When the opposite ends of the lower hanging wire rope 41 are hoisted, the plurality of distribution beams 42 all slide close to the middle position of the lower hanging wire rope 41. The wire rope clamp provided at the bottom of the distribution beam 42 is used to simultaneously put on the upper and lower hanging wire ropes 41 when the distribution beam 42 is installed, so as to facilitate the overall lifting and folding during later disassembly, and then hoisting it out from the manhole 201. The distribution beam 42 is equipped with three standard lengths of 75cm, 100cm, and 150cm, but it is not limited to these three when customized according to actual conditions. Taking a distribution beam with a length of 100cm as an example, the total weight of a hanging reinforcement component 4 in a lifted and folded state is only about 0.3t, which is very light.

[0052] One end of the height adjustment component 2 is connected to the suspension point plate 312 and the crossbeam 311. In this embodiment, the height adjustment component 2 includes a top seat 21 and a plurality of height adjustment rods 22. The top seat 21 is arranged relative to the crossbeam 311, and a plurality of working grooves 211 are provided through the top seat 21. The plurality of working grooves 211 are distributed at intervals on the top seat 21 and connect the inner cavity of the pier body of the cast section 100 of the pier body with the outside. Specifically, the top seat 21 includes two strip-shaped pedestals 212 and a plurality of bar-shaped steels 213. The two strip-shaped pedestals 212 are arranged opposite to each other and parallel to each other. The plurality of bar-shaped steels 213 are arranged at intervals along the length direction of the strip-shaped pedestals 212 to form working grooves 211 between two adjacent bar-shaped steels 213; the bar-shaped steels 213 are provided with through holes to facilitate the installation of the height adjustment rods 22. One end of the height adjustment rods 22 is detachably connected to the lifting point plate 312 and the cross beam 311. Specifically, the height adjustment rods 22 are made of finely rolled threaded steel. One end of the height adjustment rods 22 passes through the lifting hole of the lifting point plate 312, the avoidance hole of the cross beam 311, and the insertion hole of the strip steel 213 and is fixed with a nut. The other end of the height adjustment rods 22 extends in a direction away from the lifting unit 3 and is detachably connected to the top seat 21. Specifically, the other end of the height adjustment rods 22 passes through the strip steel 213 and is sleeved with a gasket 214. The gasket 214 is located on the side of the strip steel 213 away from the lifting unit 3. The side of the height adjustment rod 22 away from the gasket 214 is fixed with a nut.

[0053] This embodiment also provides a construction method for casting a hollow thin-wall pier inner diaphragm using an assembled construction platform, the construction method includes an installation method of the assembled construction platform, construction of the diaphragm 200, and a disassembly and recovery method of the assembled construction platform, as follows:

[0054] First, the installation method of the prefabricated construction platform

[0055] Providing equipment: Providing the above-mentioned assembled construction platform and lifting equipment.

[0056] Install the height adjustment component 2: install the height adjustment component 2 at the top of the cast section 100 of the pier body. In the present embodiment, a top seat 21 is installed at the top of the cast section 100 of the pier body. Specifically, two strip-shaped pedestals 212 are respectively installed at opposite sides of the top of the cast section 100 of the pier body by bolts, and a plurality of strip steels 213 are installed at intervals by bolts at the side of the two strip-shaped pedestals 212 away from the cast section 100 of the pier body.

[0057] Lifting and installation of the lifting unit 3: Rotate the two load-bearing members 31 along the connection of the rotating plate 313 to rotate the two load-bearing members 31 to a folded state, and use a lifting device to lift the two load-bearing members 31 in the folded state from the working groove 211 to the inner cavity of the pier body of the cast section 100 of the pier body. In this embodiment, the lifting device lifts the two load-bearing members 31 in the folded state by rotating the pin shaft 315. Specifically: the lifting device lifts the rotating pin shaft 315 to lift the two load-bearing members 31 in the folded state from the working groove 211 to the inner cavity of the pier body of the cast section 100 of the pier body; the lifting device can be a crane, etc., which belongs to the existing technology and will not be repeated here to save space.

[0058] When installing the hoisting unit 3, the operator uses the height-adjusting component 2 as the standing surface, unfolds the two load-bearing parts 31, and connects the height-adjusting component 2 with the load-bearing parts 31. In the present embodiment, the operator uses the side of the strip steel 213 facing away from the cast section 100 of the pier body as the standing surface, passes one end of a plurality of height-adjusting rods 22 through the strip steel 213 of the top seat 21 and is detachably connected to the strip steel 213, and pushes the other ends of the plurality of height-adjusting rods 22 into the inner cavity of the pier body of the cast section 100 of the pier body and is detachably connected to the lifting point plate 312 and the crossbeam 311 of the load-bearing part 31.

[0059] Specifically, a gasket 214 is placed on the side of the bar steel 213 away from the lifting unit 3, a nut is screwed into the end of the height adjustment rods 22 away from the lifting unit 3, and the other ends of the height adjustment rods 22 are pushed into the inner cavity of the pier body of the cast section 100 after passing through the gasket 214 and the insertion hole of the bar steel 213. A length of each height adjustment rod 22 is reserved on the side of the bar steel 213 away from the lifting unit 3 to facilitate the subsequent operation of adjusting the height of the assembled construction platform. In order to facilitate the subsequent detachment of the height adjustment rod 22 from the diaphragm 200, a movable sleeve is movably put on the part of the height adjustment component 2 located in the inner cavity of the pier body. The movable sleeve is not shown in the figure. In detail, a movable sleeve is put on the part of the height adjustment rod 22 pushed into the inner cavity of the pier body. The movable sleeve can slide along the length direction of the height adjustment rod 22. The movable sleeve adopts a PVC pipe, and the length of the movable sleeve is not less than the thickness of the precast diaphragm 200.

[0060] After the movable sleeve is put on the height adjustment rod 22, one end of the height adjustment rod 22 is fixed with a nut, and the nut at this end is tightly pressed against the gasket 214. The other end of the height adjustment rod 22 is passed through the hoisting hole of the lifting point package 312 and the avoidance hole of the crossbeam 311 and is also fixed with a nut. Repeat the above steps for several hoisting units 3 to complete the hoisting and installation of several hoisting units 3.

[0061] Install the limit component 1: the operator uses the height adjustment component 2 as the standing surface, and detachably connects the limit component 1 with the two load-bearing parts 31 of the several frame lifting units 3. Specifically, the operator uses the side of the strip steel 213 away from the cast section 100 of the pier body as the standing surface; the two sets of brake clamps 11 are detachably installed on the cross beams 311 of the two load-bearing parts 31 of the several frame lifting units 3, and then the opposite sides of the limit beam 12 are detachably connected to the two sets of brake clamps 11, so as to prevent the two load-bearing parts 31 from relative rotation.

[0062] Install the reinforcement component 4: Use a lifting device to lift the reinforcement component 4 from the working groove 211 to the inner cavity of the pier body of the cast section 100 of the pier body. The operator uses the height adjustment component 2 as the standing surface to detachably connect the reinforcement component 4 to the load-bearing parts 31 of the adjacent lifting units 3. In the present embodiment, a lifting device is used to hook the lower hanging steel wire rope 41, and the reinforcement component 4 is lifted along the working groove 211 to the inner cavity of the pier body of the cast section 100 of the pier body. The operator uses the height adjustment component 2 as the standing surface, and detachably connects the several distribution beams 42 with the load-bearing parts 31 of the two adjacent lifting units 3. Specifically, the operator uses the side of the strip steel 213 away from the cast section 100 of the pier body as the standing surface, and detachably connects the several distribution beams 42 with the several positioning slot plates 314 of the two adjacent lifting units 3. In detail, the opposite ends of each distribution beam 42 are respectively located in the two positioning slot plates 314 of the adjacent lifting units 3, and reinforcement screws 5 are passed through the several distribution beams 42 and the several positioning slot plates 314 of the load-bearing parts 31 and fixed. In the present embodiment, the reinforcement screws 5 pass through the positioning reinforcement holes of the positioning slot plates 314 and the plug-in holes of the distribution beams 42 and are reinforced with nuts.

[0063] Height adjustment: Use the height adjustment component 2 to drive the hoisting unit 3 to move in the height direction to adjust the height of the hoisting unit 3, thereby completing the installation of the prefabricated construction platform. In this embodiment, adjust the distance between one end of the height adjustment rod 22 connected to the lifting point package 312 and the top seat 21 to adjust the height of the plurality of hoisting units 3 in the inner cavity of the pier body. Specifically, move the height adjustment rod 22 vertically, and drive the crossbeam 311 to move vertically through the height adjustment rod 22 until the crossbeam 311 reaches a preset height position. The preset height position of the crossbeam 311 is to facilitate the height of the construction of the diaphragm 200 by the operators on the prefabricated construction platform. When the crossbeam 311 reaches the preset height position, tighten the nut on the end of the height adjustment rod 22 away from the hoisting unit 3 toward the gasket 214; when the height adjustment of the plurality of hoisting units 3 is completed, the installation of the prefabricated construction platform is completed;

[0064] After the limit assembly 1, the reinforcement assembly 4 and the plurality of hoisting units 3 are connected, a standing surface is formed on the side of the plurality of hoisting units 3 facing the top seat 21. When it is found that the levelness of the standing surface deviates from the horizontal plane, it is necessary to adjust the levelness of the standing surface by adjusting the overall height of the plurality of hoisting units 3. In this embodiment, a hydraulic through-hole jack is also provided. The hydraulic through-hole jack is used to assist in adjusting the overall height of the plurality of hoisting units 3. Specifically, the number of the hydraulic through-hole jacks is four, and the four hydraulic through-hole jacks are respectively arranged at the four corners of the top seat 21, specifically at the side of the corresponding bar steel 213 away from the inner cavity of the cast section 100 of the pier body; Connect the hydraulic through-hole jack to the height-adjusting rod 22 at the corresponding position and make the anchor of the hydraulic through-hole jack not anchored to the corresponding height-adjusting rod 22, loosen the nut of the height-adjusting rod 22 without the hydraulic through-hole jack installed, located outside the cast section 100 of the pier body, and adjust the overall height of the plurality of lifting units 3 by controlling the hydraulic through-hole jack. After adjusting the overall height of the plurality of lifting units 3, anchor the anchor of the hydraulic through-hole jack to the height-adjusting rod 22 at the corresponding position, tighten the nut of the height-adjusting rod 22 without the hydraulic through-hole jack installed, located outside the cast section 100 of the pier body, to prevent the height-adjusting rod 22 from sliding relative to the strip steel 213, and thus complete the adjustment of the horizontality of the standing surface. The use of the hydraulic through-hole jack and the installation of the hydraulic through-hole jack and the height-adjusting rod 22 are well known to those skilled in the art and will not be elaborated here.

[0065] Second, the construction of the diaphragm 200: the workers use the assembled construction platform as the standing surface, lay the bottom mold on the side of the construction platform facing the top of the cast section 100, cast the diaphragm 200 of preset thickness on the bottom mold, and reserve a manhole 201 on the diaphragm 200; the casting construction of the diaphragm 200 and the reservation method of the manhole 201 are well known to those skilled in the art, and will not be described in detail here;

[0066] Third, disassembly and recycling of the assembled construction platform: using the height adjustment component 2 to move the plurality of hoisting units 3 toward the top of the diaphragm 200 away from the cast section 100 of the pier body, in this embodiment, the height adjustment rod 22 located in the middle of the top is removed, and the height adjustment rods 22 located on the opposite sides of the top are retained, specifically, the height adjustment rods 22 located at the opposite ends of the strip steel 213 are retained; using the retained height adjustment rods 22 to move the plurality of hoisting units 3 toward the top of the diaphragm 200 away from the cast section 100 of the pier body by a preset distance, and the preset distance is the length of the hoisting unit 3 in the folded state;

[0067] The operating personnel use the side of the built assembled construction platform facing the top of the cast section 100 as the standing surface. Specifically, the operating personnel use the side of the hoisting unit 3 facing the top of the cast section 100 as the standing surface, dismantle the bottom mold and lift the dismantled bottom mold from the manhole 201 away from the inner cavity of the pier body. The method of dismantling the bottom mold is well known to those skilled in the art and will not be described in detail here. After dismantling the reinforcement component 4 and the limit component 1, a lifting device is used to sequentially lift the reinforcement component 4 and the limit component 1 from the manhole 201 away from the cast section 100 of the pier body. In this embodiment, the connection between the distribution beam 42 and the load-bearing member 31 is removed. The nut on the reinforcing screw rod 5 is unscrewed, and the reinforcing screw rod 5 is pulled out from the distribution beam 42 and the load-bearing member 31 along the length direction of the reinforcing screw rod 5, so that the reinforcing screw rod 5 moves toward the direction of the manhole 201, and then the reinforcing screw rod 5 is lifted off the inner cavity of the pier body, and the distribution beam 42 and the positioning slot plate 314 are no longer connected; the opposite ends of the hanging wire rope 41 are lifted and lifted off the cast section 100 of the pier body from the manhole 201; the connection between the limit beam 12 and the brake clamp plate 11, the connection between the brake clamp plate 11 and the cross beam 311 are removed, and the brake clamp plate 11 and the limit beam 12 are lifted off the cast section 100 of the pier body from the manhole 201;

[0068] The connections between the several hoisting units 3 and the height adjustment assembly 2 are removed in sequence, the two load-bearing members 31 are rotated to a folded state, and the two load-bearing members 31 in the folded state are lifted away from the cast section 100 of the pier body by a lifting device. In this embodiment, before removing the last hoisting unit 3, the operator stands on the side of the hoisting unit 3 facing the top of the cast section 100, and loosens the height adjustment rods 22 connected to the several hoisting units 3 and located on the cast section 100 of the pier body in sequence. The nut in the inner cavity of the pier body 100 is loosened, and the nut on the height-adjusting rod 22 connected to the strip steel 213 and located outside the cast section 100 of the pier body is loosened, and the height-adjusting rod 22 is sequentially pulled away from the lifting point package 312, the crossbeam 311, the movable sleeve and the strip steel 213 along the height direction of the cast section 100 of the pier body; the lifting device is hoisted and the rotating pin 315 is hoisted to lift the two load-bearing parts 31 in the folded state from the working groove 211 to the outside of the cast section 100 of the pier body;

[0069] When removing the last hoisting unit 3, the operator takes protective measures, stands on the side of the last hoisting unit 3 facing the top of the cast section 100 of the pier body, hooks the lifting device to hold the rotating pin 315, removes the nuts connecting the height-adjusting rod 22 with the lifting point plate 312, the beam 311, and the strip steel 213, pulls the height-adjusting rod 22 out of the inner cavity of the cast section 100 of the pier body, and uses the hoisting device to lift the operator and the two load-bearing members 31 in the inner cavity, and uses the hoisting device to lift the two load-bearing members 31 in the folded state out of the cast section 100 of the pier body. During the lifting process, the operator rotates the two load-bearing members 31 to the folded state, and when the last hoisting unit 3 is lifted off the cast section 100 of the pier body, the operator is lifted off the cast section 100 of the pier body;

[0070] Finally, the height adjustment component 2 is removed. Specifically, the bolts on several strip steels 213 are removed, and the strip steels 213 are lifted off by a lifting device; the bolts on the strip pedestal 212 are removed, and the strip pedestal 212 is lifted off by a lifting device.

[0071] After repeated calculations and tests by the applicant, when the prefabricated construction platform is dismantled and recycled, even after the reinforcement assembly 4 and the limit assembly 1 are removed, several lifting units 3 can bear the weight of at least two workers. However, in order to ensure the safety of the workers, the workers must take relevant protective measures during the dismantling of the prefabricated construction platform.

[0072] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. An assembled construction platform, characterized in that: It comprises a limit assembly (1), a reinforcement assembly (4), a height adjustment assembly (2) and a plurality of hoisting units (3); A plurality of the hoisting units (3) are arranged at intervals, the hoisting units (3) comprising two load-bearing members (31), the load-bearing members (31) comprising a crossbeam (311), a hanging point cover plate (312), a rotating plate (313) and a plurality of positioning slot plates (314), the hanging point cover plate (312) covering the outside of the crossbeam (311), one end of the rotating plate (313) being connected to one end of the crossbeam (311) facing the other load-bearing member (31), the other end of the rotating plate (313) being rotatably connected to the rotating plate (313) of the other load-bearing member (31), and the plurality of positioning slot plates (314) being arranged at intervals along the length direction of the crossbeam (311); the position limiting assembly (1) and the crossbeams (311) of the two load-bearing members are detachably connected; one end of the height adjusting assembly (2) is connected to the hanging point cover plate (312) and the crossbeam (311); The reinforcement assembly (4) comprises a hanging steel wire rope (41) and a plurality of distribution beams (42), wherein the plurality of distribution beams (42) are arranged at intervals along the length direction of the load-bearing member (31), and the opposite ends of the distribution beams (42) are respectively detachably connected to the positioning slot plates (314) on the adjacent cross beams (311); the hanging steel wire rope (41) extends along the length direction of the cross beam (311); the opposite ends of each distribution beam (42) are respectively detachably connected to the load-bearing member (31) of the adjacent hoisting unit (3), and a steel wire rope clamp is provided on one side of the distribution beam (42) facing the cross beam (311), wherein the steel wire rope clamp is located between the load-bearing members (31) of the adjacent hoisting units (3); the hanging steel wire rope (41) slides through the steel wire rope clamps of the plurality of distribution beams (42) to be connected to the plurality of distribution beams (42); The limiting assembly (1) is detachably connected to the two load-bearing members (31) of a plurality of the hanging units (3) to prevent the two load-bearing members (31) from rotating relative to each other; the reinforcing assembly (4) is provided between each two hanging units (3), and the reinforcing assembly (4) is detachably connected to the load-bearing members (31) of the adjacent hanging units (3); The height-adjusting assembly (2) comprises a top seat (21) and a plurality of height-adjusting rods (22); the top seat (21) is arranged relative to the cross beam (311); a plurality of operating grooves (211) are provided through the top seat (21); one end of the plurality of height-adjusting rods (22) are detachably connected to the suspension point plate (312) and the cross beam (311); the other ends of the plurality of height-adjusting rods (22) extend in a direction away from the suspension unit (3) and are connected to the top seat (21); the height-adjusting assembly (2) can drive the suspension unit (3) to move in a height direction so as to adjust the height of the suspension unit (3).

2. The assembled construction platform according to claim 1, characterized in that: The assembled construction platform comprises a reinforcing screw rod (5), wherein the reinforcing screw rod (5) is detachably passed through a plurality of positioning slot plates (314) of the load-bearing component (31) and a plurality of distribution beams (42) of the reinforcing assembly (4), so as to detachably connect the distribution beams (42) and the positioning slot plates (314).

3. The assembled construction platform according to claim 2, characterized in that: The limiting assembly (1) comprises two groups of brake clamps (11) and a limiting beam (12), the two groups of brake clamps (11) being detachably connected to the cross beams (311) of the two load-bearing members (31), and the opposite sides of the limiting beam (12) being detachably connected to the two groups of brake clamps (11) on the hoisting unit (3).

4. The assembled construction platform according to claim 1, characterized in that: The two load-bearing members (31) are rotatably connected via a rotating pin (315).

5. A method for installing an assembled construction platform, characterized in that: The following steps are involved: Providing a device: providing an assembled construction platform and a lifting device as claimed in claim 1; Installing the height adjustment component (2): installing the height adjustment component (2) at the top of the cast section (100) of the pier body; Lifting and installing the lifting unit (3): rotating the two load-bearing members (31) to a folded state, using a lifting device to lift the two load-bearing members (31) in the folded state from the working groove (211) to the inner cavity of the pier body of the cast section (100) of the pier body, unfolding the two load-bearing members (31), and connecting the height adjustment assembly (2) to the load-bearing members (31); repeating the above steps for a plurality of the lifting units (3) to complete the lifting and installation operation of the plurality of the lifting units (3); Installing the limiting assembly (1): detachably connecting the limiting assembly (1) to two of the load-bearing members (31) of a plurality of the hanging units (3); Installing the reinforcement assembly (4): using a lifting device to lift the reinforcement assembly (4) from the working trough (211) to the inner cavity of the pier body of the cast section (100) of the pier body, and detachably connecting the reinforcement assembly (4) to the load-bearing parts (31) of the adjacent lifting units (3); Height adjustment: the height adjustment component (2) is used to drive the hoisting unit (3) to move in the height direction, so as to adjust the height of the hoisting unit (3) and complete the installation of the assembled construction platform.

6. The method for installing an assembled construction platform according to claim 5, characterized in that: The "providing device" also provides a hydraulic through-hole jack, which is used in the "height adjustment" and is used to assist in adjusting the overall height of the plurality of hoisting units (3).

7. The method for installing an assembled construction platform according to claim 5, characterized in that: In the "hoisting and installation hoisting unit (3)", before one end of the height adjustment component (2) is connected to the load-bearing member (31), a movable sleeve is movably put on the part of the height adjustment component (2) located in the inner cavity of the pier body.

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