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1 工程概况位于苏州市中心城区西北角的沪宁高速公路苏州西出入口工程,是为缓解苏浒路交通压力而建,连接市区、新区、浒关地区与沪宁高速和312国道的城市高架道路。工程全线长约5．1km,桥梁总长度约为3500m。本文以白洋湾桥A23- A26一联预应力混凝土连续箱梁为例, 介绍预应力损失控制和预拱度设置。该联为三跨单箱双室等截面箱梁,每跨长 29．5m宽13．25m,基础与下部结构分别为钻孔灌注桩、承台、立柱结构。
1 Project Overview The Suzhou West Exit of Shanghai-Nanjing Expressway, located in the northwest corner of downtown Suzhou, is designed to relieve the pressure of traffic on Hu Hu Road. It connects urban areas, New District, Hu Border Region, Shanghai-Nanjing Expressway, the way. The whole project length is about 5.1km, the total length of the bridge is about 3500m. In this paper, Baiyang Bay Bridge A23- A26 a joint prestressed concrete continuous box girder as an example to introduce the prestress loss control and pre-camber setting. The joint for the three-span single box double room section box girder, each span 29.5m long and 13.25m wide, the foundation and the substructure were bored piles, cap, column structure.