| 水平成层场地地震反应非线性分析 |
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| 引用本文： | 金星,孔戈,丁海平. 水平成层场地地震反应非线性分析[J]. 地震工程与工程振动, 2004, 24(3): 38-43 |
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| 作者姓名： | 金星 孔戈 丁海平 |
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| 作者单位： | 中国地震局工程力学研究所,黑龙江,哈尔滨,150080;南京工业大学,岩土工程研究所,江苏,南京,210009;黑龙江省地震局,黑龙江,哈尔滨,150090;中国地震局工程力学研究所,黑龙江,哈尔滨,150080 |
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| 基金项目： | 中国地震局"十五"科研项目 |
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| 摘 要： | 本文首先推导了李小军积分格式(中心差分与Newmark平均加速度法相结合)的增量形式,并据此离散动力平衡方程,同时,采用Pyke提出的土动力本构模型以及多次透射人工边界条件,提出了一种水平成层场地地震反应非线性分析的显式有限元方法,并据此编制了计算机程序。数值实验表明,这种方法能较好地模拟土层在强地震作用下的非线性特性。
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| 关 键 词： | 场地地震反应 多次透射边界 非线性 显式有限元方法 |
| 文章编号： | 1000-1301(2004)03-0038-06 |
Nonlinear seismic response analysis of horizontal layered site |
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| Jin Xin. Nonlinear seismic response analysis of horizontal layered site[J]. Earthquake Engineering and Engineering Vibration, 2004, 24(3): 38-43 |
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| Authors: | Jin Xin |
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| Abstract: | Based on the explicit iterative formula presented by Li Xiaojun, an incremental-iterative scheme is put forward to discretize the dynamic equation. Combining the dynamic nonlinear constitutive model of soil presented by Pyke and the multi-transmitting artificial boundary condition, a new approach is proposed to predict the nonlinear seismic response of horizontal layered soil site and a computer program is worked out with the help of the same ideas. As demonstrated by numerical examples, this approach can significantly improve the simulation of the nonlinear characteristics of soil site under strong ground motions. |
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| Keywords: | site seismic response multi- transmitting boundary nonlinear explicit finite element mothed |
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