Steel truss girder lower chord connection joint construction platform

Abstract

The utility model discloses a steel truss girder lower chord member connecting joint construction platform which is composed of a truss, a protection rope, a steel springboard and a butt joint. The truss comprises a truss bearing beam and a side face up-down channel. The truss spandrel girder is erected on a lower chord of the steel truss girder, the truss spandrel girder is disconnected from the middle, and a spandrel girder A and a spandrel girder B which are symmetrical are arranged on two sides; the bearing beam A and the bearing beam B are connected through a butt joint; the side surface up-down channel is fixed on the truss bearing beam; the trusses are connected through protective ropes in the middle of side upper and lower channels; a pedal is arranged in the middle of the side up-down channel; steel springboards are arranged at the bottoms of the side up-down channels. The operation platform is simple in structure, all the assemblies are firmly connected and are easy to disassemble and assemble, the weight of a single assembly is light, assembly and disassembly of the platform do not need assistance of mechanical equipment, the operation platform can be conveniently and rapidly transferred among all construction point positions, and the repeated utilization rate is high.

Description

Technical Field

[0001] The utility model relates to the field of construction platforms, in particular to a steel truss lower chord connecting joint construction platform. Background Art

[0002] Since steel truss bridges combine the advantages of steel and truss structures, they are currently widely used as large and medium span bridges and extra-large span bridges. With the increase in my country's infrastructure construction power and the increase in transportation demand, more and more steel truss bridges are used in railway and highway construction. Among them, the steel truss is a truss structure formed by connecting different steel rods, and the connection methods of different rods include high-strength bolt connection and welding connection. Whether the steel truss is constructed by the cantilever method or the bracket method, it is necessary to set up an operating platform for construction personnel to carry out construction at the lower chord joint. The structure of the traditional steel truss lower chord connection joint construction platform can be referred to the utility model patent previously applied for with the authorization announcement number "CN217869992U", which discloses a reusable steel truss lower chord connection operation platform, including a top fixed connection support, a side upper and lower channel and a bottom operating platform: wherein the top fixed connection support includes a support arm and a connection plate; the side upper and lower channel includes an upper channel and a lower channel; the bottom operating platform includes a bottom support, a fence and a patterned steel plate.

[0003] Although the above-mentioned construction platform can be transported and reused, the various components of the platform are fixed as a whole and can only be constructed by lifting mechanical equipment. However, before the bridge deck is closed, the lifting mechanical equipment cannot move on the bridge. In the absence of mechanical equipment, the dismantling, transportation and reinstallation of the construction platform are very troublesome. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a steel truss lower chord connection joint construction platform that can be quickly installed, transported and dismantled without the assistance of mechanical equipment.

[0005] The utility model is realized in the following way: a construction platform for connecting joints of lower chords of steel trusses is constructed, which is composed of trusses, protective ropes, steel springboards and butt joints: the trusses include truss load-bearing beams and side up-and-down channels; the truss load-bearing beams are erected on the lower chords of steel trusses, the truss load-bearing beams are disconnected from the middle, and the two sides are symmetrical load-bearing beams A and load-bearing beams B; the load-bearing beams A and load-bearing beams B are connected through butt joints to facilitate the installation and removal of truss pieces; the load-bearing beams A and load-bearing beams B are temporarily fixed by connecting plates and bolts at the butt joints; the side up-and-down channels are fixed on the truss load-bearing beams; the trusses are connected in the middle of the side up-and-down channels by protective ropes, which are used as guardrails for personnel to go up and down and for construction; a pedal is arranged in the middle of the side up-and-down channels for personnel to go up and down; a steel springboard is arranged at the bottom of the side up-and-down channels as a construction operation platform for personnel.

[0006] Furthermore, the load-bearing beam is temporarily fixed at the butt joint using connecting plates and bolts.

[0007] Furthermore, the steel springboard is temporarily fixed to the bottom of the upper and lower side channels by thick iron wire to facilitate the installation and removal of the steel springboard.

[0008] Furthermore, along the direction of the load-bearing beam, the net spacing between the upper and lower side channels is consistent with the width of the lower chord of the steel truss beam, so that the truss can be stably stuck on the lower chord of the steel truss beam.

[0009] The utility model has the following advantages: the utility model provides a steel truss lower chord connection joint construction platform that can be quickly installed, transported and dismantled without the assistance of mechanical equipment. The operation platform has a simple structure, the connections between the components are firm and easy to disassemble and install, the weight of a single component is light, the installation and disassembly of the platform does not require the assistance of mechanical equipment, and it can be conveniently and quickly transported between various construction sites, with a high reuse rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional diagram of the structure of the lower chord member of the steel truss connected to the operating platform of the utility model.

[0011] Among them: truss load-bearing beam 1, load-bearing beam A1-1, load-bearing beam B1-2, side upper and lower channels 2, pedals 3, protective ropes 4, steel springboards 5, connecting plates 6, bolts 7, trusses 8, and butt joints 9. DETAILED DESCRIPTION

[0012] The following will be combined with the attached Figure 1 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] The utility model provides a steel truss lower chord connection joint construction platform, such as Figure 1As shown, the utility model can be implemented in the following manner; it is composed of a truss 8, a protective rope 4, a steel springboard 5 and a butt joint 9: the truss 8 includes a truss load-bearing beam 1 and a side up and down channel 2; the truss load-bearing beam 1 is erected on the lower chord of the steel truss beam, the truss load-bearing beam 1 is disconnected from the middle, and the two sides are symmetrical load-bearing beams A1-1 and load-bearing beams B1-2; the load-bearing beam A1-1 and the load-bearing beam B1-2 are connected by a butt joint 9 to facilitate the installation and removal of the truss pieces; the load-bearing beam A1-1 and the load-bearing beam B1-2 are temporarily fixed at the butt joint 9 using a connecting plate 6 and a bolt 7; the side up and down channel 2 is fixed on the truss load-bearing beam 1; the trusses 8 are connected in the middle of the side up and down channel 2 with a protective rope 4, which is used as a guardrail for personnel to go up and down and during construction; a pedal 3 is set in the middle of the side up and down channel 2 for personnel to go up and down; a steel springboard 5 is set at the bottom of the side up and down channel 2 as a construction operation platform for personnel.

[0014] The steel springboard 5 is temporarily fixed to the bottom of the side upper and lower channels 2 by thick iron wires, so as to facilitate the installation and removal of the steel springboard 5.

[0015] When there is no mechanical equipment to assist in the construction of the steel truss lower chord connection joint construction platform, the construction workers can disassemble the truss 8, the protective rope 4 and the steel springboard 5 into individual components, and only the load-bearing beam A1-1 and the load-bearing beam B1-2 are connected to the upper and lower side channels 2. The components can be manually brought to the lower chord points that need to be constructed, and then assembled to form a construction platform.

[0016] Along the direction of the load-bearing beam, the net spacing between the upper and lower side channels 2 is consistent with the width of the lower chord of the steel truss beam, so that the truss 8 can be stably clamped on the lower chord of the steel truss beam.

[0017] The utility model has the following advantages: the operating platform has a simple structure, the components are firmly connected and easy to disassemble and install, the single component is light, the installation and disassembly of the platform does not require the assistance of mechanical equipment, and it can be conveniently and quickly transported between various construction sites, with a high reuse rate.

[0018] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel truss lower chord connection joint construction platform, characterized in that: The steel truss lower chord connecting joint construction platform is composed of a truss (8), a protective rope (4), a steel springboard (5) and a butt joint (9); the truss (8) comprises a truss load-bearing beam (1) and a side upper and lower passage (2); the truss load-bearing beam (1) is erected on the steel truss lower chord, the truss load-bearing beam (1) is disconnected in the middle, and the two sides are symmetrical load-bearing beams A (1-1) and load-bearing beams B (1-2); the load-bearing beam A (1-1) and the load-bearing beam B (1-2) are connected by a butt joint (9); the side upper and lower passage (2) is fixed on the truss load-bearing beam (1); the trusses (8) are connected in the middle of the side upper and lower passages (2) by a protective rope (4); a pedal (3) is arranged in the middle of the side upper and lower passages (2); and a steel springboard (5) is arranged at the bottom of the side upper and lower passages (2).

2. The steel truss lower chord connection joint construction platform according to claim 1, characterized in that: The load-bearing beam A (1-1) and the load-bearing beam B (1-2) are temporarily fixed at the butt joint (9) using a connecting plate (6) and bolts (7).

3. The steel truss lower chord connection joint construction platform according to claim 1, characterized in that: The steel springboard (5) is temporarily fixed to the bottom of the side upper and lower passages (2) by means of thick iron wire.

4. The steel truss lower chord connection joint construction platform according to claim 1, characterized in that: Along the direction of the load-bearing beam, the clear spacing between the upper and lower channels (2) on the side is consistent with the width of the lower chord of the steel truss beam, so that the truss (8) can be stably clamped on the lower chord of the steel truss beam.

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