浦东新区钢管混凝土桁架系杆拱桥的设计实践

Design Experience of Concrete-filled Steel Tubular Truss Tied-arch Bridge in Pudong New District

借鉴在浦东新区已建或待建的钢管混凝土桁架系杆拱桥的经验,进～步探索了桁架拱肋断面形状选择、拱梁设计的理论,包括计算图式的取用。介绍了实践桥梁的桥面系设计及拱梁结构计算结果。同时深化了桁架系杆拱桥无支架施工工艺。

Referred to the concrete-filled steel tubular truss tied-arch bridges which are constructed or constructing in Pudong New District,the sectional form on truss arch ribs,the design theory of arch and beam and the calculated graph are studied.The floor system and results of structural analysis of arches and beams about the background bridge are introduced,and construction technic without scaffolding for truss tied-arch bridge is refined.