Double-deck bridge floor combined trussed girder bridge

A technology for truss bridges and bridge decks, applied in the field of new bridge structures, can solve problems such as unfavorable steel bearing capacity and inability to meet the needs of traffic development, and achieve the effects of strong traffic capacity, simple structure, and high driving comfort

Inactive Publication Date: 2008-04-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For composite beams designed as continuous beams, the steel plate girder or steel truss girder in the middle support area is under compression, which is not conducive to the bearing capacity of the steel
Fu...

Method used

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  • Double-deck bridge floor combined trussed girder bridge
  • Double-deck bridge floor combined trussed girder bridge

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Embodiment Construction

[0017] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The double-deck composite truss bridge provided by the present invention is composed of an upper concrete bridge deck 1, a lower concrete bridge deck 2 and a steel structure web, and is connected by an upper chord gusset 3, a lower chord gusset 4 and a shear connector 7. The parts are linked together into a whole. The upper and lower concrete bridge decks are used not only as bridge decks to bear vehicle loads, but also as the upper and lower chord parts of the truss girders to participate in the overall stress of the structure (as shown in Figures 1 and 2). The steel structure webs are composed of vertical webs 5 and diagonal webs 6, and concrete can also be poured into the vertical webs and diagonal webs to resist the shear force of the truss bridge. The upper concrete bridge deck 1 and the lower concrete bridge deck 2 in the tensi...

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Abstract

A combined truss bridge of double bridge decks relates to a novel bridge structure and the combined truss bridge of double bridge decks consists of an upper concrete bridge deck, a steel structure web member and a lower concrete bridge deck. The upper and lower bridge decks are used for bearing the load of vehicles and are used as an upper chord part and a lower chord part to share the global stress with the global structure. The steel structure web member consists of a slant web member and a vertical web member, and combines the upper and the lower concrete bridge decks as a whole to be used for resisting the shearing force of the truss bridge. The upper concrete bridge deck and the lower concrete bridge deck in tensile areas are provided with vertically stressed steel bars or section steel. The invention, compared with traditional single bridge deck combined girder bridges, enjoys greater traffic capacity and higher traffic comfort; compared with steel truss bridges, the invention remarkably reduces steel consumption by using concrete bridge decks as compression chords, and has the advantages of low noise, easy maintenance, good durability and so on.

Description

technical field [0001] The invention relates to a novel bridge structure, which belongs to the field of bridge engineering. Background technique [0002] Traditional steel-concrete composite bridges use a single-layer deck, which consists of a concrete slab on the upper part used as a bridge deck and a steel plate girder or steel truss girder on the lower part. For composite beams designed as continuous beams, the steel plate girder or steel truss girder in the middle support area is in a state of compression, which is not conducive to exerting the bearing capacity of the steel. Furthermore, with the increase of urban traffic volume and the increasingly tight land resources, the use of single-layer bridge decks can no longer meet the needs of traffic development when there are many lanes. Therefore, it is of great significance to study and design a new type of bridge with large traffic capacity, reasonable stress, and certain advantages in economy and construction performan...

Claims

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Application Information

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IPC IPC(8): E01D6/00E01D19/00
Inventor 聂建国樊健生
Owner TSINGHUA UNIV
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