Steel-concrete combined structure double-deck continuous girder bridge

Abstract

The invention relates to a double-layer continuous girder bridge of steel-concrete composite structure, comprising a bridge pier (1), a steel girder (2) and a bridge deck (3), wherein the bridge pier (1) supports a steel girder (2), and the steel girder (2) supporting bridge deck (3). The steel girder (2) is mainly composed of steel webs (21), small longitudinal beams (22) and upper beams (23), and the upper beams (23) and the small longitudinal beams (22), which are arranged at certain intervals along the longitudinal direction of the bridge, The steel webs (21) are orthogonal and fixed, and a lower beam (5) is correspondingly arranged under each upper beam (23), and the lower beam (5) at the non-pier (1) is connected to the steel web (21), The lower beam (5) at the bridge pier (1) is rested on the support beam (7) arranged on the top of the pier, and the sidewalk slab (10) is laid on the lower beam (5). The invention has the characteristics of the traditional steel truss structure and the composite structure of the steel plate girder, can effectively use the space, save the construction cost, and has a beautiful appearance.

Description

technical field [0001] The invention relates to a continuous girder bridge, in particular to a double-layer continuous girder bridge with steel-concrete composite structure. Background technique [0002] With the rapid development of my country's economy and the acceleration of urbanization, the traffic flow in cities is also increasing, and the lack of capacity of cross-river bridges has become a bottleneck in the transportation network of most cities across the river (river). The necessity and urgency of this will also appear. Comprehensively considering factors such as technical performance, space utilization, construction speed, and economic benefits, bridges in existing cities at home and abroad are increasingly adopting steel structures and steel-concrete composite structures, among which steel plate girder composite structures and steel truss structures are common structure type. The traditional steel plate girder composite structure generally adopts a ∏-shaped cross...

AI Technical Summary

Problems solved by technology

Most of the urban bridges built in our country in the last century are based on functional, technical or economical perspectives. Bridges generally adopt the forms of conventional beam bridges, arch bridges, cable-stayed bridges and suspension bridges. These forms of bridges are in the context of the overall urban landscape , it seems a bit dull and monotonous, and it is not coordinated with the environment of the bridge site, which affects the overall aesthetic feeling of urban buildings.

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