| 场地地震反应非线性分析的有效时域算法 |
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| 引用本文： | 栾茂田,林皋.场地地震反应非线性分析的有效时域算法[J].大连理工大学学报,1994,34(2):228-234. |
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| 作者姓名： | 栾茂田 林皋 |
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| 作者单位： | Luan Maotian(Research Institute of Engineering Mechanics，DUT) Lin Gao(Dept.of Civil Engineering，DUT) |
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| 基金项目： | 国家自然科学基金,青年基金,高校博士点专项科研基金 |
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| 摘 要： | 运用笔者所建议的动态应力－应变关系及推广的加卸载准则考虑土料在循环或瞬时加载下的非线性滞回特性，将时域逐渐积分格式与不平衡荷载转移法相结合提出了动力非线性方程的增量－常刚度迭代算法；以水平成层场地一维剪梁模型为例建立了求解土体地震反应的非线性分析技术。针对某土层剖面，运用这种真非线性算法与以往等价线性化法进行了对比计算，讨论了两者之差别。
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| 关 键 词： | 本构关系 非线性 地震反应 土力学 |
An effective time-domain computational method for nonlinear seismic response analysis of soil deposit |
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| Luan Maotian.An effective time-domain computational method for nonlinear seismic response analysis of soil deposit[J].Journal of Dalian University of Technology,1994,34(2):228-234. |
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| Authors: | Luan Maotian |
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| Abstract: | Dynamic constitutive relationship proposed by the authors,together with the extended Masings rules,is employed to account for nonlinear hysteretic property of soil material under transient or cyclic loadings. Step-by-step time integration scheme and load transfer method are combined to develop an efficient incrementally-iterative calculating technique for dynamic nonlinear problem. Afterwards,a truly nonlinear analysis procedure is presen ted and numerically implemented for evaluating seismic response of horlzontally-layered soil deposits.Based on numerical computations for a sample problem,a comparative study is performed between the solutions obtained respotively by the truly nonlinear analysis and by the conunonly-used equivalent linearization approximation. |
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| Keywords: | constitutive relation non-linear hysteresis seismic response analysis |
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