曲线箱梁桥的地震反应分析

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英文篇名：SEISMIC ANALYSIS OF CURVED BOX - GIRDER BRIDGE 中文刊名：土木工程学报 英文刊名：China Civil Engineering Journal 作者：刘保纲 ; 郭咏辉 英文作者：Liu Baogang Guo Yonghui 英文作者：(Zhenzhou Railway Administration) (Zhenzhou Civil Engineering Survey & Design Institute) 中文关键词：曲线箱梁桥 ; 翘曲 ; 扭转 英文关键词：curved box-girder bridge ; warping ; torsion 出版日期：2003-10-30 机构：郑州铁路局 ,郑州市政勘测研究院 年：2003 期：10 出版单位：土木工程学报

摘要

根据薄壁箱梁的翘曲扭转理论,建立了可以考虑截面翘曲和偏心影响的3维空间曲线箱梁桥的位移模式和能量泛函,利用有限元列式建立了动力方程。并编制了相应的程序。最后通过算例说明了翘曲扭转对曲线箱梁桥影响较大,不可忽略。
The seismic analysis of a curved box-girder bridge is carried out in the paper. It is based on the theory of warping and torsion of the thin-walled beam. The 3-D displacement model and the energy functional are derived. It is considered that the noncoincidence of the shear center and centroid. A finite element formulation of the curved box-girder is established. At same time, a relative program is developed. a numerical example is given. It is found that the effect of warping and torsion on the curved box-girder bridge can not be negleted.

引文

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