四跨飞燕式拱桥地震响应分析
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摘要
利用通用有限元软件Midas/Civil,对一座四跨飞燕式拱桥分别进行纵向地震波作用下的一致激励、行波激励和考虑复相干效应的多点激励,通过对结构响应的数据分析表明:不同地震波方向、不同激励方式均会对内力和位移产生影响,其影响可能有利也可能有害,需要根据桥梁所处场地条件确定。
By adopting the finite element software,Midas / Civil,the paper has the uniform excitation,wave-passage excitation,and multi-support excitation with the consideration of complex correlation effect,and proves by the data analysis of the structural response that various seismic wave directions and excitation approaches have the influence on the internal force and displacement,whose influence can be beneficial or harmful,so it can be identified according to the site conditions of bridges.
By adopting the finite element software,Midas / Civil,the paper has the uniform excitation,wave-passage excitation,and multi-support excitation with the consideration of complex correlation effect,and proves by the data analysis of the structural response that various seismic wave directions and excitation approaches have the influence on the internal force and displacement,whose influence can be beneficial or harmful,so it can be identified according to the site conditions of bridges.
引文
[1]杜宪亭.强地震作用下大跨度桥梁空间动力效应及列车运行安全研究[D].北京:北京交通大学,2011.
[2]武芳文,赵雷.地震动空间变异性对千米级斜拉桥结构随机地震反应的影响[J].地震工程与工程震动,2009,129(6):118-127.
[3]田景元.土石坝多点输入反应分析[D].南京:河海大学,2003.
[4]范立础.桥梁抗震[M].上海:同济大学出版社,1997:57-75.
[5]朱东生,劳远昌,沈大元,等.桥梁地震反应分析中输入地震波的确定[J].桥梁建设,2000(3):1-4.
[2]武芳文,赵雷.地震动空间变异性对千米级斜拉桥结构随机地震反应的影响[J].地震工程与工程震动,2009,129(6):118-127.
[3]田景元.土石坝多点输入反应分析[D].南京:河海大学,2003.
[4]范立础.桥梁抗震[M].上海:同济大学出版社,1997:57-75.
[5]朱东生,劳远昌,沈大元,等.桥梁地震反应分析中输入地震波的确定[J].桥梁建设,2000(3):1-4.
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