| 任意形状明置基础扭转振动复合集总参数模型 |
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| 引用本文： | 刘志久,尚守平,徐建,王贻荪.任意形状明置基础扭转振动复合集总参数模型[J].铁道科学与工程学报,2010,7(4). |
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| 作者姓名： | 刘志久 尚守平 徐建 王贻荪 |
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| 作者单位： | 湖南大学土木工程学院,湖南长沙,410082;中南大学土木建筑学院,湖南长沙,410075;湖南大学土木工程学院,湖南长沙,410082;中国机械工业集团公司,北京,100080 |
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| 基金项目： | 中国工程建设标准化协会课题(799-201113) |
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| 摘 要： | 根据基础振动弹性半空间理论的最新成果,推导出一个计算明置基础扭转振动的复合集总参数模型.采用该模型对复杂形状的明置块体基础在扭转谐和扰力作用下的动力响应进行计算,并将振幅计算结果与采用由弹性半空间理论所得到的基础扭转振动刚度和阻尼公式(由大量试验、数值计算所证实)的振幅计算结果进行比较,结果表明:两者结采非常吻合,误差仅为3.13%.利用该模型可以容易地计算在扭转扰力作用下任意频率、任意泊松比和任意形状(不包括环型)的均质半空间上块体明置基础的动力响应.
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| 关 键 词： | 明置基础 复合集总参数模型 弹性半空间 扭转振动 任意形状 动力响应 |
Torsional composite lumped parameter model of arbitrarily shaped foundations |
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| LIU Zhi-jiu
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SHANG Shou-ping
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XU Jian
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WANG Yi-sun.Torsional composite lumped parameter model of arbitrarily shaped foundations[J].Journal of Railway Science and Engineering,2010,7(4). |
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| Authors: | LIU Zhi-jiu SHANG Shou-ping XU Jian WANG Yi-sun |
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| Institution: | LIU Zhi-jiu1,2,SHANG Shou-ping1,XU Jian3,WANG Yi-sun1(1.Civil Engineering College of Hunan University,Changsha 410082,China,2.Civil , Architectural College,Central South University,Changsha 410075,3.Machine Building Group Corporation of China,Beijing 100080,China) |
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| Abstract: | A new torsional composite lumped parameter model(CLPM)was established based on the theory of surface foundation oscillation on a elastic half-space.With the new model(CLPM),torsionally dynamic responses of a complicatedly-shaped surface foundation was calculated and in good agreement with the results obtained by the formulas(supported by results of comprehensive experimental and numerical analysis),which have been developed by the theory of elastic half-space for computing the dynamic stiffness and damping ... |
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| Keywords: | surface foundation composite lumped parameter model(CLPM) elastic half-space torsional oscillation arbitrary shape dynamic response |
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