Steel truss girder permanent connection construction operation platform

Abstract

The invention discloses a steel truss girder permanent connection construction operation platform which comprises a plurality of load-bearing truss structures arranged at intervals in the longitudinal direction, and the load-bearing truss structures are connected together through operation platforms and hand rails. Each load-bearing truss structure comprises connecting rods and protective guardrails which are vertically arranged on the left side and the right side, the bottoms of the protective guardrails and the lower ends of the connecting rods are fixedly connected together through cross beams, operation platforms are laid on the cross beams of the load-bearing truss structures, and hand rails are connected between the adjacent connecting rods and protective guardrails. The upper end of the connecting rod is provided with a fixing clamp and a reinforcing hook which horizontally extend outwards. According to the construction operation platform, the fixing clamps are in meshed connection with the steel truss girder, meanwhile, the reinforcing hooks are adopted for reinforcing, and the handrail and the bottom operation platform are connected into a whole, so that the whole construction operation platform has good stability and integrity. The platform is simple in layout and light in weight; the platform components are connected without too many auxiliary devices, and assembly and disassembly are convenient and fast.

Description

Technical Field

[0001] The invention relates to a construction work platform, in particular to a construction work platform with permanent connection of steel trusses. Background Art

[0002] my country has many rivers, canyons and long mountain ranges. Driven by the incremental demand, strategic demand and functional demand for transportation infrastructure, bridges as key nodes and hubs of the road network are also facing huge opportunities and challenges. As the type of bridge with the strongest spanning capacity, steel truss suspension bridges not only make full use of the high strength of materials, but also have the characteristics of light weight, good ductility and convenient construction. They have unique advantages in crossing mountains and valleys.

[0003] Steel truss suspension bridges are mostly hoisted in segments and connected on site. The connection of steel trusses mainly involves connecting rods between segments and welding bridge decks. When connecting steel trusses, workers need to stand on an operating platform, but the construction operating platform currently used has defects such as poor stability and easy shaking, which poses a great safety hazard. In addition, it also has many problems such as heavy weight, complex layout, many auxiliary equipment required, and difficult installation and disassembly. Summary of the invention

[0004] The object of the present invention is to provide a steel truss beam permanently connected construction work platform, which has a simple structure, is easy to disassemble and assemble, can be reused, has adequate safety protection, and has a strong bearing capacity.

[0005] The technical solution of the present invention is as follows: a steel truss permanently connected construction work platform includes a plurality of load-bearing truss structures arranged at intervals along the longitudinal direction, and the plurality of load-bearing truss structures are connected together via an operating platform and a handrail; the load-bearing truss structure includes connecting rods and guardrails vertically arranged on the left and right sides, the bottom of the guardrail and the lower end of the connecting rod are fixedly connected together via a cross beam, an operating platform is laid on a plurality of cross beams of the plurality of load-bearing truss structures, handrails are connected between adjacent connecting rods and guardrails, and a fixing clamp and a reinforcement hook extending horizontally outward are provided at the upper end of the connecting rod.

[0006] In the aforementioned steel truss permanent connection construction work platform, the fixing clamp is composed of an upper clamp and a lower clamp set at intervals, and the tail ends of the upper clamp and the lower clamp are fixedly connected to the side wall of the connecting rod; the head end of the reinforcement hook is a hook structure, and the tail end is a threaded end, and a nut is sleeved on the threaded end; the front side of the connecting rod is provided with a mounting hole for the threaded end of the reinforcement hook to pass through.

[0007] In the aforementioned steel truss permanently connected construction work platform, the length of the upper and lower clamping plates extending outwards is ≥15 cm, and the gap between the upper and lower clamping plates is 2 to 3 mm thicker than the lower flange plate of the upper cross beam of the steel truss.

[0008] In the aforementioned steel truss permanently connected construction work platform, a diagonal brace is provided under the cross beam, one end of the diagonal brace is welded to the bottom of the connecting rod, and the other end is welded to the end of the cross beam, and the cross beam, the diagonal brace and the guardrail intersect at one point.

[0009] In the aforementioned steel truss permanently connected construction work platform, the guardrail includes a handrail column, and a plurality of mounting holes for the handrail to pass through are provided along the height direction of the connecting rod and the handrail column.

[0010] In the aforementioned steel truss permanently connected construction work platform, the handrail is formed by connecting multiple steel pipes, each steel pipe is provided with threads at both ends, the steel pipes are connected and extended by sleeves, and the steel pipes pass through the installation holes.

[0011] In the aforementioned steel truss permanently connected construction work platform, the operation platform includes a steel pipe skeleton and a steel mesh, and the steel pipe skeleton is composed of longitudinal steel pipes and transverse steel pipes fixedly connected to each other.

[0012] In the aforementioned steel truss permanently connected construction work platform, the setting gap between adjacent load-bearing truss structures is ≤2m.

[0013] Beneficial effects of the present invention: Compared with the prior art, the construction work platform of the present invention is formed by arranging an operating platform on multiple load-bearing truss structures, and a fixing clamp is arranged on the connecting rod of each load-bearing truss structure, which is engaged and connected with the steel truss through the fixing clamp and reinforced by a reinforcing hook. A single load-bearing truss structure is connected into a whole through a handrail and a bottom operating platform, so that the entire construction work platform has good stability and integrity, and the lower part is reinforced by a diagonal brace, so that the bending resistance of the platform beam is greatly improved; the platform is simple to lay out and light in weight; the handrails are connected by sleeves, without the need for too much auxiliary equipment, and the installation and disassembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of a top view structure; Figure 3 for Figure 1 A schematic diagram of the side structure of Figure 4 It is a schematic diagram of the structure when the present invention is used; Figure 5 for Figure 4 A schematic diagram of a top view structure; Figure 6 is a schematic diagram of the installation structure of the fixing clip; Figure 7 for Figure 6 A schematic diagram of the side structure of Figure 8 It is a structural diagram of the operating platform; Fig. 9 is a structural schematic diagram of a connecting rod; Fig.10 This is a structural diagram of the handrail column.

[0015] Figure numerals: 1. fixing clamp; 2. connecting rod; 3. crossbeam; 4. guardrail; 5. operating platform; 6. diagonal brace; 7. reinforcement hook; 8. upper crossbeam of steel truss; 9. handrail column; 10. handrail; 11. mounting hole; 12. steel pipe frame; 13. steel mesh; 14. longitudinal steel pipe; 15. transverse steel pipe, 16. upper splint; 17. lower splint. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0017] Embodiment of the present invention: Now take a certain suspension bridge as an example for explanation: the suspension bridge is a highway bridge with a main span of 1420m. The steel truss adopts a steel plate truss composite structure. The truss is a Warren truss structure. The truss height of the steel truss truss is 8m, and the center distance between the two main trusses is 27.0m. The upper crossbeam adopts a welded I-shaped section, and the bridge deck adopts an orthogonal anisotropic steel bridge deck. The bridge deck is 18mm thick and has U-shaped stiffening ribs and plate stiffening ribs underneath. The orthogonal anisotropic steel bridge decks are all welded structures. The connecting top plates between the bridge deck segments are welded, and the U-shaped stiffening ribs and plate stiffening ribs are connected by high-strength bolts. In order to ensure the safety of construction workers when connecting steel truss segments, the steel truss permanent connection construction work platform provided by the present invention is selected. The platform is simple to lay out, light in weight, stable, and easy to install and disassemble, which is conducive to on-site construction operations.

[0018] A steel truss permanently connected construction work platform of the present invention includes a plurality of load-bearing truss structures arranged at intervals along the longitudinal direction, and the plurality of load-bearing truss structures are connected together via an operating platform 5 and a handrail 10. The load-bearing truss structure includes a connecting rod 2 and a guardrail 4 vertically arranged on the left and right sides, the bottom of the guardrail 4 and the lower end of the connecting rod 2 are fixedly connected together via a crossbeam 3, wherein the crossbeam 3 is welded and fixed to the bottom of the guardrail 4 and the lower end of the connecting rod 2 respectively, an operating platform 5 is laid on a plurality of crossbeams 3 of the plurality of load-bearing truss structures, a handrail 10 is connected between adjacent connecting rods 2 and guardrails 4, and a fixing clamp 1 and a reinforcement hook 7 extending horizontally outward are provided at the upper end of the connecting rod 2, wherein the fixing clamp 1 is welded and fixed to the connecting rod 2, and the reinforcement hook 7 is movably connected to the connecting rod 2.

[0019] During use, the steel truss permanent connection construction work platform of the present invention is set at the bottom of the upper cross beam 8 of the steel truss, so that one side of the connecting rod 2 is close to the outer wall of the lower flange of the beam body, and the lower flange of the beam body is "bite" by the fixing clamp 1. At the same time, the reinforcement hook 7 is set at the lower part of the upper cross beam 8 of the steel truss, and the hook end of the reinforcement hook 7 is hooked on the lower flange of the beam, so that the construction work platform of the present invention is hung on the lower flange of the beam, thereby realizing the installation and fixation of the construction work platform, the operating platform 5 is convenient for people to walk and work, and the handrail 10 plays a safety protection role.

[0020] The fixing clamp 1 is composed of an upper clamp plate 16 and a lower clamp plate 17 which are arranged at intervals. The tail ends of the upper clamp plate 16 and the lower clamp plate 17 are welded and fixedly connected to the side wall of the connecting rod 2. The head end of the reinforcing hook 7 is a hook structure, and the tail end is a threaded end. A nut is sleeved on the threaded end. The front of the connecting rod 2 is provided with a mounting hole 11 for the threaded end of the reinforcing hook 7 to pass through. During use, the gap between the upper clamp plate 16 and the lower clamp plate 17 is used to insert the lower flange of the beam, so that the lower flange of the beam body is "bite" by the fixing clamp 1. At the same time, the reinforcing hook 7 is extended inward from the outer end of the lower flange of the beam, and the inner end of the lower flange of the beam is hooked by the hook structure of the head end of the reinforcing hook 7. The inner end of the lower flange of the beam is inserted into the hook of the reinforcing hook 7, and the nut on the threaded end of the reinforcing hook 7 is tightened to lock and fix the reinforcing hook 7.

[0021] The length of the upper clamping plate 16 and the lower clamping plate 17 extending outward is ≥15 cm, which ensures that the lower flange of the beam body can be "engaged" by the fixing clamp 1, so as to fix the construction work platform of the present invention. The gap between the upper clamping plate 16 and the lower clamping plate 17 is 2 to 3 mm thicker than the lower flange plate of the upper cross beam 8 of the steel truss beam, which facilitates the lower flange of the beam body to be inserted into the gap between the upper clamping plate 16 and the lower clamping plate 17, and ensures that the construction work platform has good stability.

[0022] A diagonal brace 6 is provided below the cross beam 3, one end of the diagonal brace 6 is welded to the bottom of the connecting rod 2, and the other end is welded to the end of the cross beam 3, and the cross beam 3, the diagonal brace 6 and the guardrail 4 intersect at one point. The diagonal brace 6 greatly improves the bending resistance of the cross beam 3 of the construction work platform and improves the overall strength of the work platform.

[0023] The guardrail 4 includes a handrail column 9, and a plurality of mounting holes 11 for the handrail 10 to pass through are provided along the height direction of the connecting rod 2 and the handrail column 9, so that the handrail 10 can pass through the mounting holes 11 conveniently.

[0024] The handrail 10 is formed by extending a plurality of steel pipes, each of which is provided with threads at both ends, and the steel pipes are connected and extended by sleeves, and the steel pipes pass through the mounting holes 11. This structure makes it convenient to extend the handrail 10 and is also convenient to disassemble later.

[0025] The operating platform 5 includes a steel pipe frame 12 and a steel mesh 13. The steel pipe frame 12 is composed of longitudinal steel pipes 14 and transverse steel pipes 15 fixedly connected to each other. The steel pipe frame 12 provides necessary support. The use of the steel mesh 13 can reduce the weight of the operating platform 5 and facilitate the installation of the operating platform 5.

[0026] The gap between adjacent load-bearing truss structures is set to ≤ 2m, ensuring that the multiple load-bearing truss structures can better support the operating platform 5.

[0027] In the construction platform of the present invention, the fixing clamp 1 is made of channel steel (50×37×4.5mm); the connecting rod 2 and the crossbeam 3 are made of ∠50×5mm equilateral angle steel; the handrail 10 is made of DN8 (outer diameter 13.5mm, wall thickness 2.25mm) welded steel pipe, with threads made at both ends, and the steel pipes are connected by sleeves; the steel pipe skeleton 12 includes a longitudinal steel pipe 14 and a transverse steel pipe 15, both of which are DN50 (outer diameter 60mm, wall thickness 3.5mm) welded steel pipe; the steel mesh 13 is φ5 (50×50mm); the diagonal brace 6 is made of ∠50×5mm equilateral angle steel; the reinforcement hook 7 is made of φ14 round steel. These materials are commonly used in the construction process and are easy to obtain.

Claims

1. A steel truss permanently connected construction work platform, characterized in that: The invention comprises a plurality of load-bearing truss structures arranged at intervals along the longitudinal direction, wherein the plurality of load-bearing truss structures are connected together via an operating platform (5) and a handrail (10); the load-bearing truss structure comprises connecting rods (2) and guardrails (4) arranged vertically on the left and right sides, wherein the bottom of the guardrail (4) and the lower end of the connecting rod (2) are fixedly connected together via a crossbeam (3), an operating platform (5) is laid on a plurality of crossbeams (3) of the plurality of load-bearing truss structures, handrails (10) are connected between adjacent connecting rods (2) and guardrails (4), and a fixing clamp (1) and a reinforcement hook (7) extending horizontally outward are provided at the upper end of the connecting rod (2).

2. A steel truss beam permanent connection construction work platform according to claim 1, characterized in that: The fixing clamp (1) is composed of an upper clamping plate (16) and a lower clamping plate (17) which are arranged at intervals, and the tail ends of the upper clamping plate (16) and the lower clamping plate (17) are fixedly connected to the side wall of the connecting rod (2); the head end of the reinforcing hook (7) is a hook structure, and the tail end is a threaded end, and a nut is sleeved on the threaded end; the front side of the connecting rod (2) is provided with a mounting hole (11) for the threaded end of the reinforcing hook (7) to pass through.

3. A steel truss beam permanent connection construction work platform according to claim 2, characterized in that: The length of the upper clamping plate (16) and the lower clamping plate (17) extending outward is ≥15 cm, and the gap between the upper clamping plate (16) and the lower clamping plate (17) is 2 to 3 mm thicker than the lower flange plate of the upper cross beam (8) of the steel truss.

4. A steel truss beam permanent connection construction work platform according to claim 1, characterized in that: An oblique brace (6) is provided below the cross beam (3), one end of the oblique brace (6) is welded to the bottom of the connecting rod (2), and the other end is welded to the end of the cross beam (3), and the cross beam (3), the oblique brace (6) and the guardrail (4) intersect at one point.

5. The steel truss beam permanent connection construction work platform according to claim 1, characterized in that: The guardrail (4) comprises a handrail column (9), and a plurality of mounting holes (11) for the handrail railing (10) to pass through are provided along the height direction of the connecting rod (2) and the handrail column (9).

6. A steel truss beam permanent connection construction work platform according to claim 5, characterized in that: The handrail (10) is formed by connecting a plurality of steel pipes, each steel pipe is provided with threads at both ends, the steel pipes are connected and extended by sleeves, and the steel pipes pass through the mounting holes (11).

7. The steel truss beam permanent connection construction work platform according to claim 1, characterized in that: The operating platform (5) comprises a steel tube frame (12) and a steel mesh (13); the steel tube frame (12) is composed of longitudinal steel tubes (14) and transverse steel tubes (15) that are fixedly connected to each other.

8. The steel truss beam permanent connection construction work platform according to claim 1, characterized in that: The gap between adjacent load-bearing truss structures is ≤2m.

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