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上海浅层土的沉降分析
引用本文:林国明.上海浅层土的沉降分析[J].河海大学学报(自然科学版),1988(5).
作者姓名:林国明
作者单位:东南大学土木工程系
摘    要:本文根据上海市区浅层土在近二十年来抽、灌水作用下的变形规律,采用优化方法分析了上海浅层土的变形模型并确定其计算参数;利用已有的上海地面沉降问题的弹性解答.采用推广的李氏比拟法,结合选定的横型,推导出了土体为粘弹性假设下的土层变形量的解答;把各年的流变参数作为一组随机变量,得到流变参数的统计规律,进而采用蒙特卡罗方法得出劳动公园及汽车二场两个标点浅层土变形量的统计规律;并将该统计规律应用于沉降预测,通过计算分析提出了减小地面沉降的措施.

关 键 词:浅层土  沉降  优化方法  粘弹性  流变模型  概率分布

Analysis of Shanghai Shallow Layer Subsidence
Lin Guoming.Analysis of Shanghai Shallow Layer Subsidence[J].Journal of Hohai University (Natural Sciences ),1988(5).
Authors:Lin Guoming
Institution:Lin Guoming
Abstract:By using the measured data of the pore pressure and deformation of Shanghai's clay and employing the optimization method,a deformation model concerning clay creep is presented and its parameters are determined. A viscoelastic solution of Shanghai land subsidence concerning clay creep is derived by using the selected model,the known elastic solution,and the extended Lee's analogy method.The probability distribution of deformation at two location in Shanghai is calculated with Monte-Carlomethod.The land subsidence is predicted and some effective measures to reduce the subsidence are suggested.
Keywords:shallow layer  settlement  optimization method  visco-elasticity  creep model  probability distribution
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