| 点插值法非线性模拟软基固结沉降问题 |
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| 引用本文： | 王志亮,甘友文. 点插值法非线性模拟软基固结沉降问题[J]. 水电自动化与大坝监测, 2003, 27(6): 53-55 |
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| 作者姓名： | 王志亮 甘友文 |
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| 作者单位： | 1. 河海大学土木工程学院,江苏省南京市,210098
2. 浙江省水利河口研究院,浙江省杭州市,310020 |
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| 摘 要： | 采用Biot固结理论，对某软基堆载引起的固结和沉降问题进行了点插值无单元法计算。构造出的位移和孔隙水压力的形函数具有δ函数特性，所以本质边界条件很易处理。计算中节点采用随机分布方式，并考虑了土的非线性特性，点插值法中引入邓肯一张模型。最后把计算值与有限元法进行了对比，结果表明点插值法精度较高。
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| 关 键 词： | 点插值无单元法 非线性 邓肯张模型 固结与沉降 |
| 修稿时间： | 2003-03-01 |
CALCULATIONS OF CONSOLIDATION AND SETTLEMENT FOR SOFT GROUND WITH NONLINEAR LOCAL POINT INTERPOLATION METHOD |
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| Wang Zhiliang,Gan Yauwen. CALCULATIONS OF CONSOLIDATION AND SETTLEMENT FOR SOFT GROUND WITH NONLINEAR LOCAL POINT INTERPOLATION METHOD[J]. HYDROPOWER AUTOMATION AND DAM MONITORING, 2003, 27(6): 53-55 |
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| Authors: | Wang Zhiliang Gan Yauwen |
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| Abstract: | The consolidation and settlement of soft ground subjected to heaped loading are calculated with a point interpolation meshless method based on the Biot's consolidation theory. The shape functions of both displacement and pore water pressure constructed by this method possess the delta function property, so the essential boundary conditions can be imposed easily. Furthermore, the famous Duncan-Chang model is adopted in consideration of nonlinear characteristics of soil, and the random point distribution mode is selected for the calculation region. Finally, comparisons show that the results from this method are accurate. |
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| Keywords: | point interpolation meshless method nonlinearity Duncan-Chang model consolidation & settlement |
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