| 用无穷元模拟半无限平面弹性地基 |
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| 引用本文： | 赵崇斌,张楚汉,张光斗.用无穷元模拟半无限平面弹性地基[J].清华大学学报(自然科学版),1986(3). |
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| 作者姓名： | 赵崇斌 张楚汉 张光斗 |
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| 作者单位： | 水利工程系
(赵崇斌，张楚汉)，水利工程系(张光斗) |
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| 摘 要： | 本文提出一种七节点超参无穷元用于模拟半无限平面弹性地基的计算方法。文中阐述了它的基本原理与公式，对其中衰减函数与无穷无边中节点位置的选择进行了比较研究．对均布及非均布荷载作用下的半无限弹性地基给出了数值结果；并与精确解作了比较。最后用这类模型计算了重力坝的地基应力分布，表明了它具有较高的计算精度与显著的经济性。
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| 关 键 词： | 弹性地基 无穷元 模拟 计算模型 |
Simulation of Semi-infinite Plane Elastic Foundation Using Infinite Elements |
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| Zhao Chongbin,Zhang Chuhan,Zhang Guangdou.Simulation of Semi-infinite Plane Elastic Foundation Using Infinite Elements[J].Journal of Tsinghua University(Science and Technology),1986(3). |
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| Authors: | Zhao Chongbin Zhang Chuhan Zhang Guangdou |
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| Institution: | Zhao Chongbin,Zhang Chuhan,Zhang Guangdou Department of Hydraulic Engineering |
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| Abstract: | A seven-node superparametric infinite element model for simulating semiinfinite plane elastic foundation is presented and the fundamental principles and formulas of the model are described. The selection of its decay function and the location of middle point of the element sideline are studied. Numerical results for semi-infinite plane elastic foundation subjected to uniform or nonuniform loads are obtained and compared with theoretical solutions. Finally, the application to the calculation of stress distribution in a gravity dam foundation shows that this analytical model is characterized by high accuracy and significant economy. |
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| Keywords: | elastic foundation infinite element simulation analytical model |
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