Multifunctional concrete box-girder bridge for double-deck traffic

Abstract

The invention discloses a multifunctional concrete box-girder bridge for double-deck traffic. The multifunctional concrete box-girder bridge comprises a box-girder bridge body formed by integrally connecting a plurality of cavities, wherein the box-girder bridge body comprises a top plate, middle web plates, side slope web plates and a base plate, thus forming two upper and lower integrated planes, a middle cavity and side cavities; the middle cavity is formed by connecting the middle part of the top part to the base plate through the middle web plates; the side cavities are formed by connecting the base plate to the top plate through the side slope web plates and the middle web plates. According to the technical scheme, the urban traffic pressure is fully solved; land resources can be saved favorably, and the double-deck traffic is realized. The multifunctional concrete box-girder bridge is widely applied to construction of small-span double-deck traffic bridges in cities, and in particular suitable for building of combined highway and railway structures with multiple lanes and building of urban light rail transport and flyover-crossing traffic.

Description

technical field [0001] The invention relates to a multifunctional concrete box girder bridge for double-layer traffic. Background technique [0002] Concrete box girder bridge is one of the main bridge structures with a long history and wide application. However, with the development of the world economy, on the one hand, urban land resources are becoming increasingly tight, and on the other hand, most of the built urban bridges are becoming more and more congested. Bridges are faced with the sacred mission of sustainable development, so there is a phenomenon of building wide bridges to ease traffic flow, and then bridge engineers have to overcome various problems such as the design and construction difficulties, large area and high cost of building wide bridges , creatively designed and built a double-deck bridge that can realize double-deck traffic. The development of double-deck bridges can be divided into two stages, namely steel truss double-deck bridges and prestresse...

AI Technical Summary

Problems solved by technology

In comparison, the former technology is mature, but the cost is relatively high, mainly used in long-span bridges across rivers and rivers, and has achieved good economic benefits in terms of project investment; the latter has the structure of box girder structure All advantages, but it is less used in urban bridges with a small span of 30-60m. At present, single-layer concrete beam bridges are commonly used in urban bridges with a span of 30-60m; Disadvantages such as limited effect

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