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Deck-type triangular truss steel joist bond beam

A technology of triangular truss and combined beams, applied in the field of steel truss girder bridges, can solve problems such as affecting the overall appearance, many rods and nodes, and manufacturing costs, etc., and achieve the effects of enhancing aesthetics, overcoming fatigue stress, and being simple in force.

Inactive Publication Date: 2014-01-29
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel truss girder has many members and joints, the structure is more complicated, and the manufacturing is more labor-intensive.
[0004] The existing top-supporting steel truss girder mainly consists of upper and lower chords, web members, upper and lower parallel links and concrete bridge decks (such as Figure 5 and 6 As shown), the composition generally adopts double main trusses, and the chords of the double main trusses are connected through the upper and lower parallel connections. The amount of steel is large, the structure is complex, and the permeability is poor, which affects the overall appearance. There are many nodes, the structure is more complicated, and the manufacturing is more labor-intensive

Method used

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  • Deck-type triangular truss steel joist bond beam
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  • Deck-type triangular truss steel joist bond beam

Examples

Experimental program
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Embodiment

[0030] Example: a top-supporting triangular truss steel truss combined beam

[0031] The bridge is a top-supporting steel-concrete composite beam with a span of 60m+72m+60m and a triangular cross-section. The main beam adopts a single steel pipe concrete structure 1, and the web 3 is connected with the bridge deck concrete slab 1 to form a stress system. , and the effect diagram composed of bridge piers and bridge decks, etc., see figure 1 .

[0032] The elevation view of the steel truss composite beam in the top-supported triangular truss (see figure 2 ), it can be seen that the top-supported triangular truss steel truss combined beam is composed of concrete deck 1, web 3, and lower chord 2, the lower chord and the web are connected by a gusset plate, the lower chord is a steel tube concrete structure, and the diameter of the steel tube The wall thickness of the steel pipe is 1.2m, the wall thickness of the steel pipe is 0.04m, concrete is poured into the steel pipe, the ...

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Abstract

The invention relates to a deck-type triangular truss steel joist bond beam which is composed of lower chords, web members and a bridge deck slab, wherein the lower chords are connected with the web members through gusset plates, and the web members are connected with the bridge deck slab. The deck-type triangular truss steel joist bond beam is of a novel structure, triangular trusses are adopted in cross sections, single steel pipes are adopted in main beams to be connected with bridge deck concrete plates through the web members to form a stress system, the state of stress on the structure is improved, rod pieces of upper chords, flat links and the like are omitted, the structure can be lighter, stress is simpler, and economical efficiency and attractiveness of the structure are enhanced.

Description

technical field [0001] The invention relates to the field of steel truss girder bridges, in particular to a top-supporting triangular truss steel truss combined beam. Background technique [0002] According to the position of the bridge deck, steel truss bridges are divided into top-down steel truss bridges and bottom-down steel truss bridges. [0003] Steel truss bridges are composed of truss members. Although steel truss bridges are generally subjected to bending and shearing, each truss member mainly bears axial force. Compared with the solid web beam, the whole web plate is replaced by sparse web members, so as to save steel and reduce the self-weight of the structure, and because the steel consumption of the web bar is less than that of the web plate of the solid web beam, the steel truss girder can be made more Large height, so it has greater rigidity and greater spanning capacity. However, the steel truss girder has many members and joints, the structure is more com...

Claims

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Application Information

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IPC IPC(8): E01D6/00
Inventor 徐升桥柳学发张华李国强雷昕弋高静青彭岚平田青
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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