某大跨钢管混凝土拱桥横撑型式比选研究

Study on the Comparison of Transverse Brace Types of a Long-span Concrete-filled Steel Tube Arch Bridge

横撑型式与布置对大跨钢管混凝土拱桥的稳定性起着至关重要的作用,针对某跨径320m的钢管混凝土拱桥横撑型式进行了比选,通过全桥整体稳定性分析与技术经济比较表明,新型的L型横撑型式能有效提高钢管混凝土桁式拱肋整体稳定性,且具有较好的技术经济性,为钢管混凝土拱桥的横撑选型提供了参考。

The type and arrangement of transverse brace play important roles in the stability of long-span concrete-filled steel tube(CFST)arch bridge.In order to compare the transverse brace type of a CFST arch bridge with a span of 320 m,the overall stability analysis and economic comparison of the bridge have been done.The results showed that the new L-type transverse brace can effectively improve the overall stability of CFST Truss Arch Rib and is economical.It provides a reference for the selection of transverse brace of CFST arch bridge.