High-altitude steel wire rope weaving operation platform and stress analysis method thereof

Abstract

The invention discloses a high-altitude steel wire rope weaving operation platform and a stress analysis method.The high-altitude steel wire rope weaving operation platform comprises a supporting structure, a cantilever beam structure is arranged at the top of the supporting structure, and a high-altitude building is arranged at the top of the cantilever beam structure; the cantilever beam structure comprises at least two longitudinal supporting cross beams and at least two transverse supporting cross beams, the cantilever beam structure divides the bottom of the high-altitude building into a center area and an outer ring area located on the outer ring of the center area, and the cantilever beam structure is connected with a steel wire rope structure. The steel wire rope structure covers the center area and the outer ring area and comprises a plurality of annular steel wire ropes arranged along the outer ring area, a safety net is arranged on the top face of the steel wire rope structure, a platform plate is laid on the top face of the safety net, and a rope used for positioning the platform plate is connected to the steel wire rope structure. The method has the advantages of being convenient to build, stable in construction and low in cost.

Description

Technical Field

[0001] The invention belongs to the technical field of high-altitude construction, and in particular relates to a high-altitude steel wire rope braiding operation platform and a force analysis method thereof. Background Art

[0002] A high-rise helipad is a special landing and take-off platform located on the roof of a high-rise building, which is mainly used for the docking and take-off and landing of helicopters. This facility is usually equipped with corresponding navigation aids, air traffic control and communication equipment, meteorological facilities, fire and rescue equipment and airport signs to ensure that helicopters can take off and land safely.

[0003] The main functions of high-rise helipads include: Emergency rescue: In the event of a fire or other emergency, the helipad can be used as an air rescue channel to quickly transport firefighters and equipment and evacuate trapped people; Business services: Provide high-end customers with fast and convenient business travel services, especially in urban traffic congestion, the helipad can provide efficient point-to-point transportation; Tourism: Become a new landmark in the city, providing unique tourism experiences, such as panoramic city sightseeing, private helicopter tours, etc. In addition, the construction of high-rise helipads also reflects the future transportation planning and development trends of the city. As a take-off and landing site for vertical aircraft, the helipad will become an important part of future urban transportation.

[0004] At present, there are three main types of aerial operation platforms for construction projects: ①Steel pipe / disc scaffolding operation platform, scaffolding is a temporary construction tool set up at the construction site for workers to operate and solve vertical and horizontal transportation. It is mainly used in exterior walls, interior decoration or places with high floor heights that cannot be directly constructed, mainly for construction workers to work up and down or for peripheral safety net maintenance and high-altitude installation of components.

[0005] ② Lightweight steel assembly operation platform. The lightweight steel operation platform usually provides a working space for high-altitude operations such as steel column docking and steel beam docking. It is composed of lightweight steel such as round steel, angle steel and channel steel. This type of operation platform generally has a single operating point and cannot provide a large working surface.

[0006] ③ Aerial vehicle operating platform. Aerial vehicles are products that serve various industries for high-altitude operations, equipment installation, maintenance and other mobile high-altitude operations. The project has been completed and can only be transported vertically by elevator. This type of operating platform is too large to reach the rooftop. The shortcoming of the existing technology is that many completed high-altitude projects are currently facing demolition, renovation, and maintenance operations. Due to the lack of lifting machinery, lack of conditions for transporting large objects, and high height, it is difficult to build a high-altitude construction operation platform, and construction is hindered; the scaffolding operation platform requires a stable foundation surface. If the scaffolding is built from the bottom of the building upwards, the cost is high and a large amount of materials are required. In addition, a scaffold that is too high will face the threat of strong winds, affecting stability. Summary of the invention

[0007] The purpose of the present invention is to provide a high-altitude steel wire rope braiding operation platform and a force analysis method thereof in view of the problems existing in the prior art. The scheme has the advantages of easy construction, stable construction and low cost.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-altitude wire rope weaving operation platform, including a supporting structure, a cantilever beam structure is arranged on the top of the supporting structure, a high-altitude building is arranged on the top of the cantilever beam structure, the cantilever beam structure includes at least two longitudinal supporting beams and at least two transverse supporting beams, the cantilever beam structure divides the bottom of the high-altitude building into a central area and an outer ring area located on the outer ring of the central area, a wire rope structure is connected to the cantilever beam structure, the wire rope structure covers the central area and the outer ring area, the wire rope structure includes a plurality of circular wire ropes arranged along the outer ring area, a safety net is arranged on the top surface of the wire rope structure, a platform plate is laid on the top surface of the safety net, and a wire rope for positioning the platform plate is connected to the wire rope structure.

[0009] In the above scheme, the supporting structure is used to connect the cantilever beam structure, and the cantilever beam structure is used to support the bottom of the high-altitude building. The longitudinal supporting beams and transverse supporting beams of the cantilever beam structure are arranged perpendicular to each other to support the bottom of the high-altitude building. The wire rope structure and the wire rope structure kettle cover are connected by the cantilever beam structure. A safety net and a platform board are arranged on the upper part of the wire rope structure to form an operating platform surface for workers to operate. The stability of the platform board positioning is ensured by the wire rope, and a circular wire rope is arranged in the outer circle area. The structure is simple and the support is stable.

[0010] Furthermore, the outer ring area includes surrounding areas and corner areas, and the steel wire rope structure includes orthogonal mesh steel wire ropes arranged in the central area.

[0011] The support stability of the upper platform plate structure is ensured by setting an orthogonal mesh wire rope in the central area. The central area is a rectangle, the surrounding area refers to the area in front, behind, left and right of the central area, and the corner area refers to the area outside the corner of the central area.

[0012] Furthermore, the longitudinal supporting beam and the transverse supporting beam are respectively provided with a plurality of connection nodes along the length direction for connecting with the wire rope structure.

[0013] The connection between the wire rope structure and the cantilever beam structure is achieved by setting connection nodes on the longitudinal supporting beam and the transverse supporting beam, thereby ensuring the supporting stability of the wire rope structure.

[0014] Furthermore, the steel wire rope structure includes a plurality of V-shaped steel wire ropes that are mirrored on the left and right and are arranged in a surrounding area, and the apex and two end points of the V-shaped steel wire rope are respectively connected to the connection nodes.

[0015] The support stability and safety of the upper load are ensured by arranging a number of V-shaped steel wire ropes in combination with the annular steel wire ropes, and the positioning stability of the end points and apexes of the V-shaped steel wire ropes is ensured by connecting nodes.

[0016] Furthermore, the longitudinal supporting cross beam and the transverse supporting cross beam each include an upper beam, a lower beam and a supporting column located between the upper beam and the lower beam, and the steel wire rope structure is connected to the lower beam.

[0017] The longitudinal supporting beams and the transverse supporting beams include upper beams, lower beams and supporting column structures to ensure the stability of the high-altitude building support. The wire rope structure is connected to the lower beams for easy installation.

[0018] Furthermore, the steel wire rope structure is connected at the connection node through a steel wire rope loop, a post-embedded part, a welded ear plate or a connecting hole body.

[0019] The connection is stable by winding the wire rope loop around the cantilever beam structure, and the wire rope structure can also be connected by arranging post-embedded parts, welding ear plates or connecting holes on the cantilever beam structure.

[0020] Furthermore, the annular steel wire rope includes a plurality of sections of straight steel wire rope, and both ends of the straight steel wire rope are respectively connected at connection nodes through fasteners.

[0021] The connection nodes of adjacent straight steel wire ropes on the circular steel wire rope correspond to each other, and the ends of the straight steel wire ropes are fixed at the connection nodes by fasteners.

[0022] Furthermore, locking buckles are provided at the intersections of the V-shaped steel wire rope and the annular steel wire rope, and the orthogonal mesh steel wire rope includes a plurality of longitudinal steel wire ropes and transverse steel wire ropes, and locking buckles are provided at the intersections of the longitudinal steel wire ropes and the transverse steel wire ropes.

[0023] By setting lock buckles to connect the intersection of the V-shaped steel wire rope and the circular steel wire rope, and the intersection of the longitudinal steel wire rope and the transverse steel wire rope, stable support is provided for the upper platform plate.

[0024] Furthermore, the longitudinal support beam and the transverse support beam are provided with connection nodes at equal intervals, and the annular steel wire rope is provided along a regular hexagon. The connection nodes are provided at equal intervals so that the platform plate on the construction platform is evenly stressed and the support is stable, and the annular steel wire rope is provided along a regular hexagon for a stable structure.

[0025] A stress analysis method for a high-altitude wire rope braiding operating platform as described above comprises the following steps: S1, establishing a cantilever beam structure and a wire rope structure model according to the cantilever beam structure parameters; S2, after calculating the maximum load, applying the maximum load to the wire rope structure model, testing the deformation of the wire rope structure, and judging whether the wire rope structure meets the requirements.

[0026] In the above scheme, S1, according to the size of the cantilever beam structure, a model is established in the finite element analysis software, and the elastic modulus, linear expansion coefficient, and mass density parameters corresponding to the wire rope need to be input to improve the accuracy of the simulation structure; S2, by applying the maximum load to simulate the most unfavorable load-bearing condition of the wire rope in actual construction, after applying the maximum load, the bearing capacity analysis diagram, simulation deformation diagram and stress ratio distribution diagram of the wire rope structure are output to determine whether the deformation of the wire rope structure and the maximum stress ratio meet the requirements.

[0027] Compared with the prior art, the present invention has the following beneficial effects: 1. By connecting steel wire ropes to the cantilever beam structure of the original building, the upper safety net and platform board are supported to form an operating platform. The main supporting components are made of flexible materials and can be directly transported by elevator. It is convenient to transport and does not require additional lifting machinery. It is convenient to transport materials and build the platform. 2. Connect and fix the wire rope structure on the cantilever beam structure, and use the wire rope structure and the safety net to form a mesh support system to support the upper platform plate. Use the wire rope to ensure the stability of the platform plate, thereby ensuring the stability of the construction staff; 3. The main structure of the operating platform uses steel wire ropes, safety nets, and platform boards, which does not require a large amount of scaffolding and reduces construction costs. The operating platform is built directly on the cantilever beam structure, without the need to build it upwards from the bottom plane, which improves the efficiency of platform construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural stereogram of a high-altitude steel wire rope braiding operation platform in an embodiment of the present invention; Figure 2 It is a top view of the installation of the platform plate in the embodiment of the present invention; Figure 3 It is a schematic diagram of the installation of the steel wire rope structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection of the cord in an embodiment of the present invention; Figure 5It is a schematic diagram of the structure of a steel wire rope loop in an embodiment of the present invention; Figure 6 It is a deformation analysis diagram of the steel wire rope structure in the embodiment of the present invention; Figure 7 A deformation stereogram of a steel wire rope structure in an embodiment of the present invention; Figure 8 is a stress ratio distribution diagram of the steel wire rope structure in an embodiment of the present invention; Fig. 9 A cross-sectional view of a connection of a safety net in an embodiment of the present invention; Fig.10 This is an installation diagram of a lock in an embodiment of the present invention; In the figure: 1. Support structure; 2. Longitudinal supporting beam; 3. Transverse supporting beam; 4. Central area; 5. Surrounding area; 6. Corner area; 7. Straight wire rope; 8. Safety net; 9. Platform plate; 10. Wire rope; 11. Orthogonal mesh wire rope; 12. Connection node; 13. V-shaped wire rope; 14. Upper beam; 15. Lower beam; 16. Support column; 17. Wire rope loop; 18. U-shaped clamp; 19. Lock buckle; 20. High-altitude building; 21. Wire rope protective cover. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in 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. In the description of the present invention, it should be noted that the terms front, back, left, right, etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the product is usually placed when in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0030] This embodiment is based on the Zhuhai Hengqin International Financial Center Building project, which is across the river from Macau. The project has been completed. The helipad of this building is a cantilevered truss steel structure. Due to the erosion of sea breeze, the steel components have rusted. Now it is necessary to carry out all-round painting and repair construction on all cantilevered steel beams, truss components and exposed parts such as the bottom of the floor decking of the helipad. There is a problem that it is difficult to build an operating platform normally for painting and renovation construction due to the cantilever height of up to 340m, strong sea breeze, and the building has been completed without lifting machinery. The corresponding materials can only be transported by elevator.

[0031] like Figure 1-10As shown, a high-altitude wire rope weaving operation platform includes a supporting structure 1, a cantilever beam structure is arranged on the top of the supporting structure 1, a high-altitude building 20 is arranged on the top of the cantilever beam structure, the cantilever beam structure includes at least two longitudinal supporting beams 2 and at least two transverse supporting beams 3, the cantilever beam structure divides the bottom of the high-altitude building 20 into a central area 4 and an outer ring area located on the outer ring of the central area 4, a wire rope structure is connected to the cantilever beam structure, the wire rope structure covers the central area 4 and the outer ring area, the wire rope structure includes a plurality of circular wire ropes arranged along the outer ring area, a safety net 8 is arranged on the top surface of the wire rope structure, a platform plate 9 is laid on the top surface of the safety net 8, and a wire rope 10 for positioning the platform plate 9 is connected to the wire rope structure.

[0032] In the above scheme, the supporting structure 1 is used to connect the cantilever beam structure, and the cantilever beam structure is used to support the bottom of the high-altitude building 20. The longitudinal supporting beam 2 and the transverse supporting beam 3 of the cantilever beam structure are arranged perpendicular to each other to support the bottom of the high-altitude building 20. The wire rope structure and the wire rope structure kettle cover are connected by the cantilever beam structure. A safety net 8 and a platform plate 9 are arranged on the upper part of the wire rope structure to form an operating platform surface for workers to operate. The stability of the positioning of the platform plate 9 is ensured by the rope 10, and a circular wire rope is arranged in the outer circle area. The structure is simple and the support is stable.

[0033] The wire rope 10 is wrapped around the upper side of the platform plate 9 to press the platform plate 9 against the upper side of the safety net 8. The platform plate 9 is made of an aluminum alloy plate, and the wire rope 10 is made of a hemp rope, which is convenient for tying the platform plate 9 and the steel wire rope. The supporting structure 1 can be a beam, a steel frame, or a house structure.

[0034] Furthermore, the outer ring area includes a surrounding area 5 and a corner area 6 , and the steel wire rope structure includes an orthogonal mesh steel wire rope 11 arranged in the central area 4 .

[0035] The support stability of the upper platform plate 9 structure is ensured by arranging orthogonal wire ropes 11 in the central area 4. The central area 4 is rectangular, the surrounding area 5 refers to the area in front of, behind, to the left and to the right of the central area 4, and the corner area 6 refers to the area outside the corner of the central area 4.

[0036] Furthermore, the longitudinal supporting beam 2 and the transverse supporting beam 3 are respectively provided with a plurality of connection nodes 12 along the length direction for connecting with the steel wire rope structure.

[0037] The connection between the steel wire rope structure and the cantilever beam structure is achieved by arranging connection nodes 12 on the longitudinal support beam 2 and the transverse support beam 3, thereby ensuring the support stability of the steel wire rope structure.

[0038] Furthermore, the steel wire rope structure includes a plurality of V-shaped steel wire ropes 13 that are arranged in the surrounding area 5 in a left-right mirror image, and the apex and two end points of the V-shaped steel wire rope 13 are respectively connected to the connection node 12 .

[0039] The support stability and safety of the upper load are ensured by arranging a plurality of V-shaped steel wire ropes 13 in cooperation with the annular steel wire rope, and the positioning stability at the end points and apexes of the V-shaped steel wire ropes 13 is ensured by connecting the nodes 12 .

[0040] Furthermore, the longitudinal supporting beam 2 and the transverse supporting beam 3 each include an upper beam 14 , a lower beam 15 and a supporting column 16 located between the upper beam 14 and the lower beam 15 , and the steel wire rope structure is connected to the lower beam 15 .

[0041] The longitudinal support beam 2 and the transverse support beam 3 include an upper beam 14, a lower beam 15, and a support column 16 structure to ensure the stability of the support for the high-altitude building 20. The wire rope structure is connected to the lower beam 15, which is easy to install.

[0042] The high-altitude building 20 includes a helipad.

[0043] Furthermore, the steel wire rope structure is connected at the connection node 12 through a steel wire rope loop 17, a post-embedded part, a welded ear plate or a connection hole body.

[0044] The connection is stable by winding the wire rope loop 17 on the cantilever beam structure. The wire rope structure can also be connected by arranging post-embedded parts, welding ear plates or connecting holes on the cantilever beam structure.

[0045] The wire rope loop 17 can be a separate wire rope loop 17 independent of the wire rope structure, or it can be formed by winding the end of the wire rope structure on the cantilever beam structure through a U-shaped clamp 18. The upper part of the wire rope loop 17 is wound around the support column 16 to prevent the connection node 12 from axial displacement. A wire rope protective sleeve 21 is arranged between the outer side of the corner of the lower beam 15 and the wire rope loop 17. The wire rope protective sleeve 21 is a flexible right-angle plate structure and can be made of rubber.

[0046] Furthermore, the annular steel wire rope includes a plurality of straight steel wire ropes 7 , and both ends of the straight steel wire ropes 7 are respectively connected at the connection nodes 12 through fasteners.

[0047] The connection nodes 12 of adjacent straight steel wire ropes 7 on the circular steel wire rope correspond to each other, and the ends of the straight steel wire ropes 7 are fixed at the connection nodes 12 by fasteners.

[0048] The fastener comprises a U-shaped snap ring 18 .

[0049] Furthermore, lock buckles 19 are provided at the intersections of the V-shaped steel wire rope 13 and the annular steel wire rope, and the orthogonal mesh steel wire rope 11 includes a plurality of longitudinal steel wire ropes and transverse steel wire ropes, and lock buckles 19 are provided at the intersections of the longitudinal steel wire ropes and the transverse steel wire ropes.

[0050] The locking buckle 19 is provided to connect the intersection of the V-shaped steel wire rope 13 and the annular steel wire rope, and the intersection of the longitudinal steel wire rope and the transverse steel wire rope, so as to provide stable support for the upper platform plate 9.

[0051] Furthermore, connection nodes 12 are equidistantly arranged on the longitudinal support beam 2 and the transverse support beam 3, and the annular steel wire rope is arranged along a regular hexagon. The equidistant arrangement of the connection nodes 12 makes the platform plate 9 on the construction platform evenly stressed and stable in support, and the annular steel wire rope is arranged along a regular hexagon for a stable structure.

[0052] A stress analysis method for a high-altitude wire rope braiding operating platform as described above comprises the following steps: S1, establishing a cantilever beam structure and a wire rope structure model according to the cantilever beam structure parameters; S2, after calculating the maximum load, applying the maximum load to the wire rope structure model, testing the deformation of the wire rope structure, and judging whether the wire rope structure meets the requirements.

[0053] In the above scheme, S1, according to the size of the cantilever beam structure, a model is established in the finite element analysis software, and the elastic modulus, linear expansion coefficient, and mass density parameters corresponding to the wire rope need to be input to improve the accuracy of the simulation structure; S2, by applying the maximum load to simulate the most unfavorable load-bearing condition of the wire rope in actual construction, after applying the maximum load, the bearing capacity analysis diagram, simulation deformation diagram and stress ratio distribution diagram of the wire rope structure are output to determine whether the deformation of the wire rope structure and the maximum stress ratio meet the requirements.

[0054] In the embodiment, the steel wire rope structure uses 1570 steel wire rope, elastic modulus: 1.90*10 5 N / mm 2 ; Linear expansion coefficient: 1.20*10 -5 ;Mass density: 12500kg / m 3 The maximum load includes the standard value of the plate deadweight load of 0.05KN / ㎡, the most unfavorable concentrated load of the painting transformation activity load is 6.0KN, and the wire rope pre-tension value is 1.0KN. The maximum stress ratio is 0.84, which meets the requirements.

[0055] The apex of the V-shaped steel wire rope 13 corresponds to the end point of the orthogonal mesh steel wire rope 11 , and the two end points of the V-shaped steel wire rope 13 correspond to the end points of the straight steel wire rope 7 .

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-altitude steel wire rope braiding operation platform, comprising a supporting structure, a cantilever beam structure is arranged on the top of the supporting structure, and a high-altitude building is arranged on the top of the cantilever beam structure. It is characterized in that The cantilever beam structure includes at least two longitudinal supporting beams and at least two transverse supporting beams. The cantilever beam structure divides the bottom of the high-altitude building into a central area and an outer ring area located outside the central area. A wire rope structure is connected to the cantilever beam structure. The wire rope structure covers the central area and the outer ring area. The wire rope structure includes a plurality of circular steel ropes arranged along the outer ring area. A safety net is arranged on the top surface of the wire rope structure. A platform plate is laid on the top surface of the safety net. The wire rope structure is connected to a wire rope for positioning the platform plate.

2. The high-altitude steel wire rope braiding operation platform according to claim 1, It is characterized in that The outer ring area includes surrounding areas and corner areas, and the wire rope structure includes orthogonal mesh wire ropes arranged in the central area.

3. The high-altitude steel wire rope braiding operation platform according to claim 2, It is characterized in that The longitudinal supporting cross beam and the transverse supporting cross beam are respectively provided with a plurality of connection nodes along the length direction for connecting with the wire rope structure.

4. The high-altitude steel wire rope braiding operation platform according to claim 3, It is characterized in that The steel wire rope structure includes a plurality of V-shaped steel wire ropes which are mirror images and arranged in a surrounding area, and the apex and two end points of the V-shaped steel wire ropes are respectively connected to the connection nodes.

5. The high-altitude steel wire rope braiding operation platform according to claim 1, It is characterized in that The longitudinal supporting cross beam and the transverse supporting cross beam both comprise an upper beam, a lower beam and a supporting column located between the upper beam and the lower beam, and the steel wire rope structure is connected to the lower beam.

6. The high-altitude steel wire rope braiding operation platform according to claim 3, It is characterized in that The steel wire rope structure is connected at the connection node through a steel wire rope loop, a post-embedded part, a welding ear plate or a connection hole body.

7. The high-altitude steel wire rope braiding operation platform according to claim 3, It is characterized in that The annular steel wire rope comprises a plurality of sections of straight steel wire rope, and two ends of the straight steel wire rope are respectively connected at connection nodes through fasteners.

8. The high-altitude steel wire rope braiding operation platform according to claim 4, It is characterized in that Lock buckles are arranged at the intersections of the V-shaped steel wire rope and the annular steel wire rope, and the orthogonal mesh steel wire rope comprises a plurality of longitudinal steel wire ropes and transverse steel wire ropes, and lock buckles are arranged at the intersections of the longitudinal steel wire rope and the transverse steel wire rope.

9. The high-altitude steel wire rope braiding operation platform according to claim 3, It is characterized in that The connection nodes are equidistantly arranged on the longitudinal supporting beam and the transverse supporting beam, and the annular steel wire rope is arranged along a regular hexagon.

10. A method for analyzing the stress of a high-altitude steel wire rope braiding operation platform according to any one of claims 1 to 9, Features The method comprises the following steps: S1, establishing a cantilever beam structure and a wire rope structure model according to the cantilever beam structure parameters; S2, after calculating the maximum load, applying the maximum load to the wire rope structure model, testing the deformation of the wire rope structure, and judging whether the wire rope structure meets the requirements.

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