| 基于Biot理论的沙井地基固结沉降分析 |
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| 引用本文： | 魏鸿,唐伯明,董元帅.基于Biot理论的沙井地基固结沉降分析[J].重庆交通大学学报(自然科学版),2009,28(5):887-891,959. |
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| 作者姓名： | 魏鸿 唐伯明 董元帅 |
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| 作者单位： | 1. 同济大学,交通运输工程学院,上海200092
2. 重庆交通大学,重庆,400074 |
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| 摘 要： | 将非线性弹性本构关系(邓肯-张模型)引入Biot固结理论有限元程序,把砂井地基等效为砂墙,并模拟实际施工中分级加载过程,采用平面应变有限元方法对其固结沉降与超静孔隙水压力消散的规律进行研究。与实测结果的对比表明,平面有限元方法可较准确的预测沙井地基的固结沉降,并能有效模拟分级加载过程中地基沉降与超静孔隙水压力消散的规律。该方法对确定软土地基上的路堤施工进度和路面铺设时间都具有较高的应用价值。
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| 关 键 词： | 沙井地基 平面有限元 邓肯-张模型 固结沉降 |
Consolidation Settlement of Sand Drain Subgrade Based on Biot Theory |
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| WEI Hong,TANG Bo-ming,DONG Yuan-shuai.Consolidation Settlement of Sand Drain Subgrade Based on Biot Theory[J].Journal of Chongqing Jiaotong University,2009,28(5):887-891,959. |
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| Authors: | WEI Hong TANG Bo-ming DONG Yuan-shuai |
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| Institution: | WEI Hong1,TANG Bo-ming2,DONG Yuan-shuai2(1.School of Traffic & Transportation Engineering,Tongji University,Shanghai 200092,China,2.Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | The non-linear elastic constitutive relation(Duncan-Zhang model)is applied to the finite element procedure based on Biot consolidation theory.The sand drain subgrade is taken as the sand wall,and the loading process by classifying in the actual construction is simulated.The consolidation settlement and the rule of ultra-static dissipation of pore pressure in the sand drain ground are studied by the plane finite element.Compared with the measured results,it is showed that the plane finite element method can ... |
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| Keywords: | sand drain subgrade plane FEM Duncan-Zhang model consolidation settlement |
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