Plateau alpine steel truss arch field splicing device

Abstract

The utility model discloses a plateau high-cold steel truss arch site splicing device, which belongs to the technical field of steel truss arch construction equipment and comprises a supporting steel pipe and longitudinal connection angle steel. The longitudinal connection angle steel is sequentially connected with the multiple supporting steel pipes, and the horizontal splicing device is used for splicing single sections of the steel truss arch. The vertical splicing device comprises a support steel pipe, a transverse bracing pipe and supporting profile steel; each vertical splicing device is provided with four support steel pipes, the four support steel pipes are arranged in a rectangular array mode, every two adjacent support steel pipes in the transverse direction are connected through a transverse supporting pipe, every two adjacent support steel pipes in the longitudinal direction are connected through supporting profile steel, and the vertical splicing devices are used for splicing single sections into a complete steel truss arch. The utility model has the advantages that the splicing and the trial splicing can be simultaneously carried out, the installation efficiency is high, the splicing device can be repeatedly utilized, the cost is saved, and a constructor can complete lofting, scribing, positioning and welding on the ground during horizontal splicing without working aloft.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel truss arch construction equipment, and more specifically relates to a plateau high-cold steel truss arch on-site assembly device. Background Art

[0002] With the rapid development of our country, railway lines are constantly extending from cities to plateaus and cold areas. In the process of building these railways, steel bridges are indispensable and their applications are becoming more and more extensive. Steel bridges are mainly divided into steel arch bridges, suspension bridges, cable-stayed bridges, etc. Steel truss arches are more difficult to process and install than ordinary trusses. The harsh environment of the plateau and cold weather puts higher requirements on the on-site construction of steel truss arches. The accuracy of on-site assembly is the most critical link to ensure the accuracy of installation, and it is also the key to the quality of the entire bridge. Therefore, the research and application of on-site assembly devices for steel truss arches in plateaus and cold weather is particularly important. At present, my country does not have construction equipment suitable for on-site assembly of steel truss arches in plateaus and cold weather, and relevant construction experience is still scarce. Analysis of the problems existing in similar technologies is as follows:

[0003] 1. The steel truss arch is composed of multiple upper and lower chord tubes, connecting plates and chord tube connectors. There are many rods, and the docking accuracy between segments is high. It is difficult to position during assembly. It is difficult to ensure the processing and manufacturing accuracy of general ground assembly.

[0004] 2. During the assembly of steel truss arches, the flatness of single truss pieces, the position and verticality of parallel joints, diagonal braces, and web members, as well as the precision control of the overall dimensions of the entire segment are limited.

[0005] 3. The steel truss arch is a three-dimensional structure. During installation, it is necessary to ensure that multiple steel pipes are connected in place at the same time for normal installation. It has high requirements on the accuracy of the assembly device and segments, and the matching degree of adjacent segments.

[0006] 4. The high-altitude and cold climate of the plateau has the characteristics of large temperature difference between day and night and large deformation of steel structures, which requires that the assembly device must be easy to operate and have sufficient rigidity and strength.

[0007] Therefore, how to provide a high-altitude and cold steel truss arch on-site assembly device is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0008] In view of this, the utility model provides an on-site assembly device for high-altitude and cold steel truss arches, which has the advantages that assembly and trial assembly can be carried out simultaneously, the installation efficiency is high, the assembly device can be reused, and the cost is saved. During horizontal assembly, the construction workers can complete the layout, marking, positioning and welding on the ground without the need for high-altitude operations.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A device for assembling steel truss arches on site in high altitude and cold regions, comprising: a horizontal assembly device and a vertical assembly device; the horizontal assembly device comprises: supporting steel pipes and longitudinal angle steels; the number of the supporting steel pipes is multiple, and the longitudinal angle steels are sequentially connected to the multiple supporting steel pipes, and the horizontal assembly device is used to assemble a single segment of the steel truss arch; the vertical assembly device is provided with multiple groups, including support steel pipes, cross bracing pipes and supporting steel sections; each group of the vertical assembly device is provided with four support steel pipes, and the four support steel pipes are arranged in a rectangular array, and two laterally adjacent support steel pipes are connected by a cross bracing pipe, and two longitudinally adjacent support steel pipes are connected by a supporting steel section, and the vertical assembly device is used to assemble a single segment into a complete steel truss arch.

[0011] Furthermore, a single segment of the steel truss arch includes: an upper parallel joint, a lower parallel joint and a transverse joint; the tops of the two longitudinally adjacent supporting steel pipes are connected by an upper parallel joint, and the bottoms are connected by a lower parallel joint, and the top of one of the two longitudinally adjacent supporting steel pipes is connected to the bottom of the other supporting steel pipe by a transverse joint.

[0012] Furthermore, the tops of multiple laterally adjacent supporting steel pipes are connected by an upper chord tube, and the bottoms are connected by a lower chord tube. The top of one of the two laterally adjacent supporting steel pipes is connected to the bottom of the other supporting steel pipe through a diagonal web bar, and the tops of the two diagonally adjacent supporting steel pipes are connected by a diagonal brace, and a straight web bar is welded between the upper chord tube and the lower chord tube.

[0013] The beneficial effects of the utility model are:

[0014] 1. When assembling the steel truss arch, all connection points are matched and assembled at the same time, and all the connections between adjacent segments are trial-assembled. Assembly and trial assembly are carried out simultaneously, which not only has high construction accuracy, but also saves secondary pre-assembly, greatly improving construction efficiency.

[0015] 2. The horizontal assembly device is a universal assembly device, which can not only meet the assembly construction of multiple single-piece trusses in a single segment, but also can be used for the assembly of single-piece trusses in other segments; after the assembly of a single segment is completed, the vertical assembly device can also be applied to the next group of vertical trusses by adjusting the position between single rectangular vertical assembly devices; the production and installation of an assembly device can be reused many times, which truly achieves material reuse and saves the time for the production and installation of multiple assembly devices; the assembly device and the assembly process are simple and convenient to operate, and the construction efficiency is high.

[0016] 3. When assembling horizontally, the workpiece is less than 1m from the ground, and the construction workers can complete complex construction processes such as layout, marking, positioning, and welding while standing on the ground; when assembling vertically, the workpiece is placed on the vertical assembly device, which has a large operating space and is equipped with a safe operating platform, which can not only meet the operating requirements of the construction workers, but also ensure the safety of the workers.

[0017] 4. The assembly device accurately locates the position of the components, the size of the segments, and the line shape of the entire arch, ensuring the quality of assembly and production, reducing the difficulty of subsequent high-altitude installation and the risk of high-altitude operations.

[0018] 5. The assembly device is quick and simple to construct, with high assembly precision and low construction safety risk, providing a theoretical basis for subsequent construction of similar bridges.

[0019] 6. Save labor, materials and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 It is a front structural schematic diagram of the steel truss arch of the utility model.

[0022] Figure 2 It is a schematic diagram of the top view of the steel truss arch of the utility model.

[0023] Figure 3 It is a front structural schematic diagram of the vertical assembly device of the utility model.

[0024] Figure 4 It is a side structural schematic diagram of the vertical assembly device of the utility model.

[0025] Figure 5 It is a schematic diagram of the top view of the structure of the vertical assembly device of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the horizontal splicing device of the utility model.

[0027] Figure 7 It is a schematic diagram of the positions of the upper chord tube and the lower chord tube of the utility model.

[0028] Figure 8 It is a schematic diagram of the position of the steel diagonal brace of the utility model.

[0029] Fig. 9 It is a schematic diagram of the process of vertical assembly of steel truss arches of the utility model.

[0030] Among them, in the figure:

[0031] 1-Supporting steel pipe; 2-Longitudinal angle steel; 3-Upper horizontal joint; 4-Support steel pipe; 5-Horizontal bracing pipe; 6-Supporting steel; 7-Lower horizontal joint; 8-Horizontal joint; 9-Upper chord tube; 10-Lower chord tube; 11-Diagonal web member; 12-Diagonal brace. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0033] Please refer to the attached Figure 1-9 The utility model provides a high-altitude cold steel truss arch on-site assembly device, including: a horizontal assembly device and a vertical assembly device; the horizontal assembly device includes: a supporting steel pipe 1 and a longitudinal angle steel 2; the number of the supporting steel pipes 1 is multiple, and the longitudinal angle steel 2 is sequentially connected with multiple supporting steel pipes 1, and the horizontal assembly device is used to assemble a single segment of the steel truss arch; the vertical assembly device is provided with multiple groups, including support steel pipes 4, cross bracing pipes 5 and supporting steel 6; each group of the vertical assembly device is provided with four support steel pipes 4, and the four support steel pipes 4 are arranged in a rectangular array, and the two adjacent support steel pipes 4 in the transverse direction are connected by the cross bracing pipe 5, and the two adjacent support steel pipes 4 in the longitudinal direction are connected by the supporting steel 6, and the vertical assembly device is used to assemble a single segment into a complete steel truss arch. The connecting angle steel 2 connects and fixes the supporting steel pipe 1 into a whole by welding; in order to ensure the flatness of a single segment, the elevation of the supporting steel pipe 1 of the horizontal assembly device must be guaranteed to be consistent (±1mm). The bottom of the support steel pipe 4 can be fixed by fixing flanges, fixing bolts and stiffening ribs. The bottom fixing flange is bolted to the ground by eight fixing bolts, and the remaining components are connected by welding to ensure sufficient strength. Except for the different heights of the support steel pipe 4, the remaining parts are universal parts to ensure the efficiency of processing and manufacturing. The supporting arc steel plate can be used to directly support the lower chord tube 10. On the one hand, it supports the assembled segment, and on the other hand, it controls the linear shape of the assembled segment and the accuracy of assembly. The vertical assembly device is composed of multiple single assembly devices arranged and used according to the linear combination of the steel truss arch.

[0034] A single segment of the steel truss arch includes: an upper horizontal link 3, a lower horizontal link 7 and a transverse link 8; the tops of the two longitudinally adjacent supporting steel pipes 1 are connected by an upper horizontal link 3, and the bottoms are connected by a lower horizontal link 7, and the top of one of the two longitudinally adjacent supporting steel pipes 1 is connected to the bottom of the other supporting steel pipe 1 by a transverse link 8.

[0035] The tops of multiple laterally adjacent supporting steel pipes 1 are connected by an upper chord tube 9, and the bottoms are connected by a lower chord tube 10. The top of two laterally adjacent supporting steel pipes 1 is connected to the bottom of the other supporting steel pipe 1 by a diagonal web member 11, and the tops of two diagonally adjacent supporting steel pipes 1 are connected by a diagonal brace 12, and a straight web member is welded between the upper chord tube 9 and the lower chord tube 10.

[0036] In the utility model, a plurality of single-piece trusses are assembled by horizontal assembly devices, and each node is position-welded, and then the straight web members and the diagonal web members 11 are position-welded to form a plurality of single segments of steel truss arches, and each single segment is a rigid skeleton truss; the plurality of single-piece trusses are welded together by upper chord tubes 9 and lower chord tubes 10; a plurality of vertical assembly devices are arranged at predetermined installation positions, and then a plurality of single-side trusses are successively fixed on the plurality of vertical assembly devices, and are fixed by temporary supports; after the fixing is completed, the upper horizontal link 3, the lower horizontal link 7, the horizontal link 8 and the diagonal brace 12 are position-welded; and the devices installed in step S2 and step S4 are transported to the site for hoisting and installation.

[0037] When horizontally assembling, the straight web members and diagonal web members 11 are installed, and all the same nodes should be in the same horizontal plane. During the assembly process, the level is used to control and spot weld and fix them in a good position. Stiffening plates can also be added to the nodes of the straight web members and diagonal web members 11 to increase the installation strength. The welding sequence is to weld the upper chord tube 9 and the lower chord tube 10 first, then weld the node stiffening plate, and then weld the penetration weld between the node plate stiffening and the upper chord tube 9 and the lower chord tube 10.

[0038] The assembly order of the vertical assembly is: lower horizontal joint 7 → horizontal joint 8 → diagonal brace 12 → upper horizontal joint 3. In order to stabilize the truss during assembly, vertical web bars can be set at both ends and the middle of the segment for temporary auxiliary support with steel sections to ensure the stability of the truss. After the horizontal connection is installed, the auxiliary support can be gradually removed.

[0039] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0040] 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 high-altitude cold steel truss arch on-site assembly device, characterized in that: include: Horizontal splicing device and vertical splicing device; The horizontal assembly device comprises: a supporting steel pipe (1) and a longitudinal angle steel (2); The number of the supporting steel pipes (1) is multiple, and the longitudinal angle steels (2) are connected to the multiple supporting steel pipes (1) in sequence. The horizontal assembly device is used to assemble a single segment of the steel truss arch; the vertical assembly device is provided with multiple groups, including support steel pipes (4), cross bracing pipes (5) and supporting steel sections (6); each group of the vertical assembly device is provided with four support steel pipes (4), and the four support steel pipes (4) are arranged in a rectangular array. Two adjacent support steel pipes (4) in the transverse direction are connected by a cross bracing pipe (5), and two adjacent support steel pipes (4) in the longitudinal direction are connected by a supporting steel section (6). The vertical assembly device is used to assemble a single segment into a complete steel truss arch.

2. The on-site assembly device for high-altitude and cold-weather steel truss arches according to claim 1 is characterized in that: A single segment of the steel truss arch comprises: an upper horizontal joint (3), a lower horizontal joint (7) and a transverse joint (8); the tops of the two longitudinally adjacent supporting steel pipes (1) are connected via the upper horizontal joint (3), and the bottoms are connected via the lower horizontal joint (7); and the top of one of the two longitudinally adjacent supporting steel pipes (1) is connected to the bottom of the other supporting steel pipe (1) via the transverse joint (8).

3. The on-site assembly device for high-altitude and cold-weather steel truss arches according to claim 1 is characterized in that: The tops of a plurality of laterally adjacent support steel pipes (1) are connected via an upper chord tube (9), and the bottoms are connected via a lower chord tube (10); the top of one of two laterally adjacent support steel pipes (1) is connected to the bottom of another support steel pipe (1) via an oblique web member (11); the tops of two obliquely adjacent support steel pipes (1) are connected via an oblique brace (12); and a straight web member is welded between the upper chord tube (9) and the lower chord tube (10).

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