脱空对钢管混凝土拱桥的影响分析

为了保持钢管混凝土复合材料的优越性,钢管和混凝土之间就需要紧密接触,但目前国内的钢管混凝土拱桥都出现了不同程度的脱空现象,严重影响了拱桥运营阶段的承载能力及稳定性。文章采用有限元分析方法对脱空状态下的钢管混凝土拱桥以及影响脱空的各种因素做具体分析,指出了脱空对拱桥线形、稳定性及动力特性的影响,为解决钢管混凝土脱空问题以及改善拱桥受力性能提供参考。

Separation Effects on Concrete-Filled Steel Tube Arch Bridge

The advantage of concrete filled steel tubular composite thin-walled steel pipe and tube core concrete of the close integration and interaction between steel and concrete, in order to maintain this superiority, you need to be in close contact, but the domestic CFST arch bridges have suffered different void phenomenon of the degree, which seriously affect the carrying capacity and stability of the arch bridge operational phase, we use the finite element method for specific analysis of the void state of CFST arch bridge as well as the various factors that impact void, to solve the steel pipe concrete void problems and to improve the the filled performance provide a reference.