以上海闵浦大桥中跨桥面安装为例,对双层钢桁架结构斜拉桥桥面梁施工工艺进行了较为深入的探讨和研究,因地制宜地采取大量创新施工工艺,解决了场地条件限制多、通航要求高、结构自重大、起重设备布局困难、全焊接对接精度要求高、超大超重斜拉索安装等难题,优质高效地完成了中跨桥面安装,取得了良好的社会效益和经济效益。 Taking Shanghai Min Pu Bridge as an example, this paper discusses the construction process of deck girders of double-deck steel truss structure cable-stayed bridge in depth and adopts a large number of innovative construction techniques according to local conditions to solve the problem of more site conditions , High navigation requirements, heavy structure, difficult layout of lifting equipment, high precision of all-welded joints and installation of oversized over-center stay cables, etc., and completed the mid-span bridge deck installation with high quality and efficiency, achieving good social benefits and economy benefit.