苏通大桥方案目 录1. 项目概况...........................................................................................................11。1 项目地理位置及主要功能....................................................................................11。2 前期工作概况........................................................................................................12。 主要技术标准................................................................................................33。 建设条件........................................................................................................63.1 地形地貌...................................................................................................................63.2 气象...........................................................................................................................73。3 河势及河床稳定....................................................................................................83.4 水文...........................................................................................................................83.5 工程地质.................................................................................................................113。6 地震......................................................................................................................134。 主航道桥桥型及结构方案..........................................................................174.1 总体设计.................................................................................................................174。2 结构设计..............................................................................................................174.3 施工方案.................................................................................................................245．专用航道桥桥型及结构方案.......................................................................285。1 总体设计.....................
