Staged segmented lifting suspended operation platform and construction method thereof

Abstract

The present application relates to a kind of stepped sectional lifting suspension operation platform and its construction method, platform is arranged in the lower part of corridor, platform frame is set using I-beam, steel plate is laid on I-beam frame, lower lifting point is provided on I-beam, part of lower lifting point is used as platform lifting lifting point, upper lifting point is provided on the main structure steel beam of corridor, and upper lifting point and lower lifting point are fixedly connected by pull rod, and the block behind the lower part of corridor is arranged in a stepped manner and suspended.This stepped sectional lifting suspension operation platform and its construction method provide an air operation platform that can form reliable working surface and support surface for the construction of the suspended structure component under the air corridor, the platform can be used for personnel passage, construction and formwork bent frame erection, with the characteristics of strong practicality, high bearing capacity and simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of aerial suspended operating platforms, specifically to a stepped segmented lifting suspended operating platform and its construction method. Background Technology

[0002] For the construction of the suspended structure of the sky bridge, there are several main methods: (1) erecting a cantilevered operating platform to construct the lower components of the bridge; (2) erecting a Bailey bridge under the bridge to construct the lower components; (3) using a suspended basket to construct the lower components of the bridge.

[0003] Each of the above construction techniques has its advantages and disadvantages. Cantilever platforms have a certain load-bearing capacity, but this capacity is significantly reduced when the span is large, and the construction difficulty also increases. Bailey bridges offer wide coverage and strong load-bearing capacity, but they require a large amount of steel, resulting in high construction costs. While suspended platform construction is relatively flexible and can effectively address the decoration work of connecting corridors, individual suspended platforms have a small coverage area and cannot bear loads other than personnel, failing to meet the structural construction requirements of erecting formwork supports at the bottom of the connecting corridor. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention provides a stepped segmented lifting suspension operation platform and its construction method.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A stepped, segmented lifting and suspended operating platform is set at the lower part of the connecting corridor. The main frame of the platform is constructed of I-beams, and steel plates are laid on the I-beams. Lower lifting points are provided on the I-beams, and some of the lower lifting points also serve as lifting points for the platform. Upper lifting points are provided on the steel beams of the main structure of the connecting corridor. The upper and lower lifting points are fixedly connected by tie rods. The lower part of the connecting corridor is segmented and suspended in a stepped manner.

[0007] As a preferred technical solution, the tie rod is made of precision-rolled threaded steel.

[0008] As a preferred technical solution, the lifting points include double lifting points and single lifting points. The double lifting points are formed by using double-splitting channel steel to span the steel beam. The precision-rolled threaded steel passes through both ends of the double-splitting channel steel and is fixed by washers and double nuts. The double-splitting channel steel is fixed by setting fixing channel steel on both sides and bottom of the steel beam.

[0009] As a preferred technical solution, a single lifting point is formed by welding a vertical steel plate to the bottom of the upper steel beam, welding a horizontal steel plate between the vertical steel plates, and then fixing the precision-rolled threaded steel bar through the horizontal steel plate with a washer and nut.

[0010] As a preferred technical solution, the lower suspension point is formed by welding vertical steel plates onto the I-beam frame steel beams, welding horizontal steel plates between the vertical steel plates, and then fixing the precision-rolled threaded steel through the horizontal steel plates with shims and bolts.

[0011] As a preferred technical solution, a segmented lifting construction method for a stepped segmented lifting suspended operating platform includes the following steps:

[0012] Step 1: Divide the lower part of the corridor into several sections arranged in a stepped manner;

[0013] Step 2: Raise the first auxiliary block to be flush with the bottom of the completed structure and tie it vertically and fix it laterally. Raise the second auxiliary block to the outside of the first auxiliary block and carry out the structural construction at the platform position corresponding to the first auxiliary block.

[0014] Step 3: Continue to lift the second auxiliary block to the next level, and lift the third auxiliary block to the outside of the second auxiliary block, and carry out the structural construction at the platform position corresponding to the second auxiliary block;

[0015] Step four: Continue construction upwards using the methods in steps two and three until the lower structure of the connecting corridor is completed.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The stepped, segmented lifting and suspension operating platform and its construction method of the present invention provide an aerial operating platform that can form a reliable working surface and support surface for the construction of the structural components under the aerial corridor, and has the following characteristics:

[0018] (1) High practicality: The operating platform has a large span, making it convenient for erecting formwork and personnel to operate;

[0019] (2) High load-bearing capacity: The operating platform has good load-bearing capacity and can be used as a support surface for structural construction formwork scaffolding;

[0020] (3) Simple and convenient: The platform is upgraded in a step-by-step manner and the operation is simple.

[0021] In terms of technical effectiveness, compared to the suspended platform construction method, the stepped segmented lifting operation platform can be designed in sections according to the shape and size of the structure to be constructed under the corridor, and can be lifted in sections. It can provide a complete, large-scale operation and support surface, which effectively solves the problem of lack of construction surface for the construction of the lower components of the suspended structure of the corridor.

[0022] In terms of economic benefits, the steel requirement for the stepped, segmented lifting platform is significantly reduced compared to installing Bailey bridges under suspended structures like connecting corridors. Furthermore, the segmented lifting technology of the platform is better suited to the irregular structures beneath the connecting corridors compared to Bailey bridges. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the stepped segmented lifting suspension operation platform of the present invention;

[0024] Figure 2 This is a plan view of the stepped segmented lifting and suspension operation platform of the present invention;

[0025] Figure 3 This is a schematic diagram of the double lifting points in the stepped segmented lifting suspension operation platform of the present invention;

[0026] Figure 4 This is a structural schematic diagram of a single lifting point in the stepped segmented lifting suspension operation platform of the present invention;

[0027] Figure 5 This is a schematic diagram of the lower suspension point in the stepped segmented lifting suspension operation platform of the present invention;

[0028] Figure 6 This is a schematic diagram of step three in the construction method of the stepped segmented lifting and suspension operation platform of the present invention;

[0029] Figure 7 This is a schematic diagram of step four in the construction method of the stepped segmented lifting and suspension operation platform of the present invention;

[0030] Figure 8 This is a schematic diagram of step five in the construction method of the stepped segmented lifting and suspension operation platform of the present invention;

[0031] Figure 9 This is a schematic diagram of the lateral connection between the stepped segmented lifting suspension operation platform and the plate structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the connection structure between the I-beam frame and the shear wall in the stepped segmented lifting and suspension operation platform of the present invention;

[0033] Figure 11 This is a schematic diagram of the tie-connection structure between I-beams in the stepped segmented lifting suspension operating platform of the present invention.

[0034] In the diagram: 1. Main structure of the connecting corridor; 2. I-beam; 3. Steel plate; 4. Upper suspension point; 5. Lower suspension point; 6. Double-section channel steel; 7. Fixed channel steel; 8. Steel beam; 9. Precision rolled threaded steel; 10. Washer; 11. Nut; 12. Horizontal tie; 13. First auxiliary block; 14. Second auxiliary block; 15. Third auxiliary block; 16. Right-angle fastener; 17. Angle steel; 18. Stiffening plate; 19. Steel pipe; 20. Round steel. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0036] like Figure 1 As shown, a stepped, segmented lifting and suspended operating platform is installed under the connecting corridor. The main frame of the platform is constructed using I-beams 2, and steel plates 3 are laid on the I-beams 2 frame to form a working surface. Lowering points 5 are provided on the I-beams 2, such as... Figure 2 As shown, some of the lower lifting points 5 also serve as lifting points during the platform lifting process. Upper lifting points 4 are located on the steel beams of the main structure 1 of the connecting corridor. The operating platform is lifted to the required construction position via a winch or other equipment, and then secured by connecting the upper lifting points 4 and lower lifting points 5 with precision-rolled threaded steel bars 9. The platform is stabilized by lateral bracing with the main structure 1 of the connecting corridor. Based on the shape of the structure to be constructed under the connecting corridor, the platform is rationally designed in sections for stepped lifting construction. The platform provides access for personnel, construction work, and formwork erection.

[0037] like Figure 9 As described above, when the platform and the plate structure are laterally connected, angle steel 17 is welded on the I-beam 2, and a triangular stiffening plate 18 is welded on the side of the angle steel 17 away from the right angle side. The other side of the angle steel 17 is fully welded to one end of the steel pipe 19. The other end of the steel pipe 19 adopts a symmetrical structure of angle steel 17 and stiffening plate 18. The bottom of the stiffening plate 18 is fixed to the cast-in-place structure by round steel plug welding.

[0038] like Figure 10 As described above, when the platform is connected to the shear wall structure, angle steel 17 and stiffening plate 18 are also welded to the I-beam 2 and connected to one end of steel pipe 19. The other end of steel pipe 19 is fixed to a fixed steel plate by full welding around the perimeter. The fixed steel plate is fixed to the shear wall by round steel 20.

[0039] The operating platform fixing rod is made of precision rolled threaded steel 9.

[0040] Suspension point 4 includes double suspension points and single suspension points, such as Figure 3 As shown, the double suspension point is formed by using double-splitting channel steel 6 spanning the steel beam 8, and precision-rolled threaded steel 9 passing through both ends of the double-splitting channel steel 6 and being fixed by washers 10 and double nuts 11. The double-splitting channel steel 6 is fixed by fixing channel steel 7 set on both sides and bottom of the steel beam 8.

[0041] like Figure 4 As shown, a single suspension point is formed by welding a vertical steel plate to the bottom of the upper steel beam 8, welding a horizontal steel plate between the vertical steel plates, and then fixing the precision-rolled threaded steel bar 9 through the horizontal steel plate with a washer 10 and a nut 11.

[0042] like Figure 5As shown, the lower suspension point 5 is formed by welding vertical steel plates onto the I-beam 2 frame steel beam, welding horizontal steel plates between the vertical steel plates, and then fixing the precision rolled threaded steel bar 9 through the horizontal steel plates with shims 10 and bolts.

[0043] like Figure 11 As shown, when the platforms are connected, steel pipes 19 are welded onto the I-beam 2 and the steel pipes 19 are fixedly connected to each other by right-angle fasteners 16.

[0044] The following example demonstrates the construction of a three-stage stepped platform lifting system for an inverted triangular structure suspended under a connecting corridor. Several auxiliary blocks are required during the construction process.

[0045] A method for constructing a segmented lifting suspended operating platform, comprising the following steps:

[0046] Step 1: Divide the lower part of the corridor into several sections arranged in a stepped manner;

[0047] Step two, as Figure 6 As shown in the figure, the blue part is the layer to be built and the green part is the layer that has been poured. The first auxiliary block 13 is raised to be flush with the bottom of the completed structure, i.e. the poured layer, and vertically tied and laterally fixed. The second auxiliary block 14 is raised to the outside of the first auxiliary block 13, and the structural construction of the platform position corresponding to the first auxiliary block 13 is carried out.

[0048] Step 3, as Figure 7 As shown, continue to lift the second auxiliary block 14 to the upper layer, and lift the third auxiliary block 15 to the outside of the second auxiliary block 14. Make horizontal tie 12 between the platforms and carry out structural construction at the platform position corresponding to the second auxiliary block 14.

[0049] Step four, as Figure 8 As shown, continue construction upwards following the methods in steps two and three until the lower structure of the connecting corridor is completed.

[0050] Based on the shape and size of the required construction structure at the bottom of the connecting corridor, the steel platform can be reasonably divided into sections and lifted in a stepped manner.

[0051] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-creative modifications to this embodiment as needed after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A segmented lifting construction method of a stepped segmented lifting suspended operation platform, the operation platform is arranged at the lower part of a corridor, characterized in that, The platform main frame is made of I-shaped steel, a steel plate is laid on the I-shaped steel frame, lower lifting points are arranged on the I-shaped steel, part of the lower lifting points are used as platform lifting points, upper lifting points are arranged on the main structure steel beam of the corridor, the upper lifting points and the lower lifting points are fixedly connected through a pull rod, and the lower part of the corridor is arranged in a stepped manner. The method comprises the following steps: Step one, the lower part of the corridor is divided into several blocks in a stepped manner; Step two, a first auxiliary block is lifted to the bottom of the completed structure, vertical pull connection and lateral fixation are performed, a second auxiliary block is lifted to the outside of the first auxiliary block, and structure construction is performed on the platform position corresponding to the first auxiliary block; Step three, the second auxiliary block is continuously lifted to the upper layer, a third auxiliary block is lifted to the outside of the second auxiliary block, and structure construction is performed on the platform position corresponding to the second auxiliary block; Step four, the method of step two and step three is continuously used for upward construction until the lower part of the corridor is constructed.

2. The step-by-step lifting construction method of the step-by-step lifting suspended operation platform according to claim 1, characterized in that, The pull rod is made of fine rolled threaded steel.

3. The step-by-step lifting construction method of the step-by-step lifting suspended operation platform according to claim 2, characterized in that, The upper lifting point comprises double lifting points and single lifting points, the double lifting points are made of double-spliced channel steel which is horizontally arranged on the steel beam, the fine rolled threaded steel passes through the two ends of the double-spliced channel steel and is fixed by a gasket and double nuts to form the double lifting points, and the double-spliced channel steel is fixed by fixed channel steels arranged on both sides and the bottom of the steel beam.

4. The step-by-step lifting construction method of the step-by-step lifting suspended operation platform according to claim 3, characterized in that, The single lifting point is a vertical steel plate welded on the upper steel beam, horizontal steel plates are welded between the vertical steel plates, the fine rolled threaded steel passes through the horizontal steel plates and is fixed by a gasket and nuts to form the single lifting point.

5. The step-by-step lifting construction method of the step-by-step lifting suspended operation platform according to claim 2, characterized in that, The lower lifting point is a vertical steel plate welded on the I-shaped steel frame steel beam, horizontal steel plates are welded between the vertical steel plates, and the fine rolled threaded steel passes through the horizontal steel plates and is fixed by a gasket and bolts to form the lower lifting point.

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