Low-span bridge structure for small-angle crossing interchange

Abstract

The invention belongs to the technical field of bridge structures, and in particular relates to a low-span bridge structure for a small-angle crossing interchange. The structure comprises a plurality of parallel side walls on a foundation, wherein a driving roof is fixed on the tops of the side walls; a wider driving passage under the driving roof is separated by the side walls. Compared with a conventional large-span bridge, the low-span bridge structure has the advantages that when railway bridges span the intersection with a small crossing angle, the large-span bridge is separated into a plurality of small-bridges; the structure height is 4-8m lower than that of the large-span bridge due to small span and integrated piers and girders, so that the bridge height is reduced, and the bridge length is shortened; the adopted rigid structure with conventional span is simple in construction, the construction period is short, the investment can be reduced, and periods can be shortened. The low-span bridge structure has good social and economical benefits.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, and in particular relates to a low-span bridge structure used for small-angle crossovers. Background technique [0002] When the railway crosses overpasses with small angles, the design and construction of long-span bridges has always been a concern. When a domestic railway bridge crosses an interchange with a small crossing angle, due to functional requirements, especially when crossing a high-grade road, the general span is more than 80m, and when the crossing angle is small and the road width of the crossing road is wide, it can even reach 200m. When a long-span bridge is used to cross the interchange, the height and length of the bridge are increased due to the large span and high beam height. In addition, the design and construction of the long-span bridge are difficult, the landscape effect is poor, and the traffic across the interchange is greatly affected. Especially for large ...

AI Technical Summary

Problems solved by technology

When a long-span bridge is used to cross the interchange, due to the large span and high girder height, the height and length of the bridge will increase. In addition, the design and construction of the long-span bridge are difficult, the landscape effect is poor, and the traffic across the interchange is greatly affected.

Especially for large spans, due to the relatively complex structure, it is difficult to fully guarantee the construction quality, and the construction period is long, which often affects the construction quality, project duration and project investment.

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