| 行波效应下大跨钢管混凝土拱桥的非线性地震响应分析 |
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| 引用本文： | 吴玉华,亓兴军,郭剑飞.行波效应下大跨钢管混凝土拱桥的非线性地震响应分析[J].公路交通科技,2011,28(1):80-85. |
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| 作者姓名： | 吴玉华 亓兴军 郭剑飞 |
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| 作者单位： | 1.浙江工业大学之江学院，浙江杭州310024;
2.山东建筑大学土木工程学院，山东济南250101 |
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| 基金项目： | 国家自然科学基金资助项目(50908135);山东省交通科技项目(2009Y10) |
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| 摘 要： | 对大跨度钢管混凝土拱桥在三维地震激励下进行了非线性时程分析.几何非线性分析采用修正拉格朗日描述(U.L列式法),材料非线性采用钢管混凝土统一理论并考虑等效紧箍力,通过对某大跨度钢管混凝土拱桥的非线性地震响应分析,研究了几何非线性、材料非线性、阻尼比及行波效应对拱桥地震响应的影响.结果表明:几何非线性对钢管混凝土拱桥地震...
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| 关 键 词： | 桥梁工程 拱桥 地震响应 几何非线性 材料非线性 行波效应 |
| 收稿时间： | 2010-03-23 |
Analysis of Nonlinear Seismic Response of Long-span CFST Arch Bridge under Traveling Wave Effect |
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| WU Yuhua,QI Xingjun,GUO Jianfei.Analysis of Nonlinear Seismic Response of Long-span CFST Arch Bridge under Traveling Wave Effect[J].Journal of Highway and Transportation Research and Development,2011,28(1):80-85. |
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| Authors: | WU Yuhua QI Xingjun GUO Jianfei |
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| Institution: | WU Yuhua1,QI Xingjun2,GUO Jianfei1(1.Zhijiang College,Zhejiang University of Technology,Hangzhou Zhejiang 310024,China,2.School of Civil Engineering,Shandong Jianzhu University,Jinan Shandong 250101,China) |
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| Abstract: | The nonlinear time-history of long-span concrete filled steel tubular (CFST) arch bridge under 3D earthquake excitations was analysed. The geometrical non-linearity was analysed with updated Lagrange formulation, and the material non-linearity was analyzed by the unified theory and equivalent confined stress. The influence of geometrical non-linearity, material non-linearity, damping ratio and traveling wave effect on the earthquake response of the bridge was studied based on nonlinear seismic response analysis of a long-span CFST arch bridge. The results show that (1) the influence of geometrical non-linearity on the seismic response of CFST arch bridge is concerned with the seismic response amplitude of structure; (2) the influence of damping ratio and traveling wave effect on the seismic response of CFST arch bridge is remarkable; (3) the material non-linearity has little effect on the displacement of arch rib and axial force, but has great effect on the in-plane and out-of-plane bending moment |
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| Keywords: | bridge engineering arch bridge seismic response geometrical non\ linearity material non\ linearity traveling wave effect |
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