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A large-span assembled bridge modular truss and its assembly and folding method

A modular and assembled technology, which is applied in the erection/assembly of bridges, bridges, bridge construction, etc., can solve the problems of long assembly and erection time and a large number of assembly units, and achieve smooth connection, large chord bending stiffness, and fast The effect of assembly and disassembly

Active Publication Date: 2020-10-16
CHINA HARZONE IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the face of large-scale natural disasters, time is life. Quickly repairing damaged bridges and restoring the lifeline of traffic has become the primary task of emergency rescue and disaster relief. The maximum single-hole span of traditional emergency steel bridges is less than 69 meters, and the number of assembled units is large, and the assembly and erection time is long. , does not meet the requirements of emergency rescue and disaster relief for large-span prefabricated bridges, and there is an urgent need to develop large-span prefabricated bridges to provide guarantee for emergency rescue and disaster relief

Method used

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  • A large-span assembled bridge modular truss and its assembly and folding method
  • A large-span assembled bridge modular truss and its assembly and folding method
  • A large-span assembled bridge modular truss and its assembly and folding method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] See attached figure 1 , this embodiment provides a long-span assembled bridge modular truss, including: an upper chord 10, a lower chord 11, four connecting bodies 12, two vertical bars 13 and sixteen diagonal web bars 14;

[0035] See attached figure 2 The upper chord 10 is a parallel double-rod structure formed by two rods 111 arranged in parallel. One end of each rod 111 is welded with a double ear plate 112 with a hole, and the other end is welded with a single ear plate 113 with a hole. The ear plate 113 is located in the middle of the end of the rod 111. When two modular trusses are docked, the double ear plate with holes of the previous modular truss is docked with the single ear plate with holes of the next modular truss; the two rods 111 Chord steel plates 116 with holes are evenly distributed along the length direction of the rods, and the two ends of the chord steel plates 116 with holes are respectively welded to the rods 111 on the corresponding sides; T...

Embodiment 2

[0044] This embodiment provides a method for assembling and folding the modular truss of a large-span fabricated bridge, based on the modular truss of a large-span fabricated bridge as described in Embodiment 1, including the following steps:

[0045] A. See attached figure 1 , factory pre-assembled;

[0046] The members of the modular truss of the large-span fabricated bridge are pre-assembled in the factory. The upper chord 10 and the lower chord 11 are placed in parallel up and down. At 1 / 4 and equidistant from the top chord 10 and the bottom chord 11, install the first layer of diagonal rods 14, and one end of 8 diagonal rods 14 is respectively connected to the 1-hole double diagonal rod connection on the upper chord 10 and the lower chord 11 The ear 114 and the 2-hole double oblique web rod connecting ear 119 are connected with a threaded pin shaft, and the other ends are respectively connected with the four-corner oblique web rod connection holes of the connecting body ...

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Abstract

The invention relates to the technical field of mechanized bridges, in particular to a large-span prefabricated bridge truss and an assembly folding method. The large-span prefabricated bridge modularization truss comprises an upper chord member, a lower chord member, connectors, vertical members and diagonal web members, the structure of the upper chord member is as same as that of the lower chord member and is a parallel double-rod structure, the upper chord member and the lower chord member are vertically parallel, the connectors are of double-layer rectangular blocky structures, the two vertical members are connected with the upper chord member and the lower chord member and vertically arranged between the upper chord member and the lower chord member, each connector is connected withfour diagonal web members to form an X-structure support, the total group number of the supports is four, every two supports form one group, each group of supports are mounted on two sides of one vertical member through the connectors, and movable ends of the diagonal web members in each group of supports are connected with the upper chord member and the lower chord member. The large truss is standardized and can be folded and rapidly assembled and disassembled.

Description

technical field [0001] The invention relates to the technical field of mechanized bridges, in particular to a large-span assembled bridge truss and an installation method. Background technique [0002] my country has a vast territory, and disasters such as earthquakes, floods, storms (snow), mudslides and other disasters occur from time to time, causing corresponding bridge damage and traffic interruption. In the face of large-scale natural disasters, time is life. Quickly repairing damaged bridges and restoring the lifeline of traffic has become the primary task of emergency rescue and disaster relief. The maximum single-hole span of traditional emergency steel bridges is less than 69 meters, and the number of assembled units is large, and the assembly and erection time is long. , does not meet the requirements of emergency rescue and disaster relief for large-span prefabricated bridges, and it is urgent to develop large-span prefabricated bridges to provide guarantee for e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/10
Inventor 熊志舒畅谢北萍李开琼汪田杨志平
Owner CHINA HARZONE IND CORP