桥梁精细化设计在城市道路快速化改造的运用

环城南路东段(河清路～东外环路)快速路是宁波市中心城区快速路网的重要组成部分,构成中心城区"快速环路",主要承担城市中长距离的交通功能,沟通城市各功能片区.该工程西接东苑立交预留的高架"跳水台",向东接现状跨铁路桥(落地段抬升改建),跨越规划盛梅路后与东外环路-环城南路立交衔接,新建改建桥梁约3.5 km.工程建设用地紧张,条件苛刻,地下管线复杂,周边建构筑物多,施工期间交通压力大.通过深入研究和精细化设计,结合现场实际和施工方案,合理选用桥型结构,充分利用现状结构物,使桥梁设计做到安全、合理、经济、适用.

Application of Bridge Refined Design in Rapid Transformation of Urban Roads

The fast road in the east section of South Ring Road (Heqing Road ~ East Outer Ring Road) is an important part of the express way network in the downtown area of Ningbo, which forms a "fast ring road" in the downtown area, and mainly undertakes the long-distance traffic function of city in order to connect various functional areas of city. The project is connected with the elevated "diving platform" reserved for Dongyuan Interchange in the west, and to the east is connected with the current cross-railway bridge (the landing section is uplifted and reconstructed), and after crossing the planned Shengmei Road, it is connected with the East Outer Ring Road-South Ring Road Interchange. The newly built and reconstructed bridges are about 3.5 km long. The engineering construction land is tight, the conditions are harsh, the underground pipelines are complex, the surrounding buildings are many, and the traffic pressure during the construction period is heavy. Through the in-depth research and refined design, combined with the field practices and construction schemes, the reasonable bridge-type structures are selected, and the existing structures are fully utilized, which make the bridge design safe, reasonable, economical and applicable.