大跨度钢管混凝土拱桥空间地震反应分析

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英文篇名：Three-Dimensional Seismic Responses of Long-Span CFST Arch Bridge 中文刊名：西南交通大学学报 英文刊名：Journal of Southwest Jiaotong University 作者：郑家树 ; 金邦元 英文作者：ZHENG Jiashu1 ; JIN Bangyuan2(1. Dept. of Basic Courses ; Emei Branch of Southwest Jiaotong University ; Emei 614202 ; China ; 2. China Railway Civil Engineering Co. Ltd ; Lhasa 850000 ; China) 中文关键词：拱桥 ; 地震反应分析 ; 有限元 ; 钢管混凝土 ; 几何非线性 ; 基础结构相互作用 英文关键词：arch bridge ; seismic response analysis ; finite elements ; concrete filled steel tube ; geometric non-linearity ; foundation-structure interaction 出版日期：2003-02-28 机构：西南交通大学峨眉分校基础课部,中铁二局股份有限公司青藏铁路公路指挥部 四川峨眉614202 ,西藏拉萨850000 年：2003 期：01 出版单位：西南交通大学学报

摘要

将大跨钢管混凝土拱桥———龙潭河大桥简化为空间动力计算有限元模型,以弹簧作为考虑基础 结构相互作用的边界条件,用空间迭代算法程序计算其自振特性,用Wilson θ程序计算其地震作用下空间几何非线性反应.计算结果表明,基础 结构相互作用对各阶频率、轴力和力矩以及跨中位移均有影响.
A longspan concrete filled steel tube (CFST) arch bridge, Longtan river bridge, is simplified into a space FEM model to calculate the dynamic responses to seismic an input. In the model, the boundaries between the foundations and the structure are considered to be connected with springs. The natural vibration frequencies are calculated with a space iteration program compiled by the authors, and threedimensional geometric nonlinear seismic responses are analyzed with Wilsonθ method. Calculating results show that the interaction between founders and the structure influences frequencies of all orders considered, axial forces and moments, and midspan displacements. 

引文

[1]　郑家树.大跨度钢管混凝土拱桥非线性地震反应分析[D].硕士学位论文.成都:西南交通大学,2000.
    [2]　范立础.桥梁抗震[M].上海:同济大学出版社,1997:22 31.
    [3]　李国豪.桥梁结构稳定与振动[M].北京:中国铁道出版社,1996:558 560.
    [4]　丁皓江,何福保,谢贻权,等.弹性和塑性力学中的有限单元法[M].北京:机械工业出版社,1992:157 160.
    [5]　HartGC,WongK.Structuraldynamicsforstructuralengineers[M].NewYork:JohnWiley＆SonsInc.,1999:578585.