【摘要】 介绍了三山西大桥桥型方案的选择原则，方案设计，主桥为连续刚构桥、斜拉桥、钢管混凝土中承式拱桥三种方案的比选，及主桥实施方案的构思。更多还原

【Abstract】 General considerations for selecting bridge type from comparsion of the continuous rigid-framedstructure,cable-stayed bridge and half- thruarch bridge of steel pipeconfining concrete for main spans of San-shan West Bridge are described.Conceptual design and constructiOn scheme preparation for the selected bridgetype are also introduced。更多还原