系杆对钢管混凝土拱桥抗震性能的影响
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摘要
利用Wislon-θ法推导了大跨度钢管混凝土拱桥非线性地震响应时程分析的理论公式,并编制了相应的有限元程序。然后以在建的南县茅草街大桥为例,利用该有限元程序对其进行了非线性地震响应分析。最后分析了系杆抗弯刚度以及系杆张拉力对钢管混凝土拱桥抗震性能的影响。
The theoretical formula of nonlinear seismic responses of long span CFST(concrete-filled steel tube) arch bridges subjected to earthquake ground motion were derived by Wislon-θ method.And corresponding nonlinear finite element programs were developed.Then taking the Maocaojie Bridge in Nanxian,Hunan Province as an example,which is being built,the effects of flexural rigidity and tension force of tie-bars on the seismic behavior of CFST arch bridges are investigated.
引文
[1]陈宝春.钢管混凝土拱桥计算理论研究进展[J].土木工程学报,2003,36(12):47-57.
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