| 上海深厚饱和覆盖土层的动力耦合地震反应分析 |
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| 引用本文： | 黄雨,叶为民,唐益群,陈竹昌.上海深厚饱和覆盖土层的动力耦合地震反应分析[J].岩土力学,2002,23(4):411-416. |
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| 作者姓名： | 黄雨 叶为民 唐益群 陈竹昌 |
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| 作者单位： | 同济大学地下建筑与工程系,上海200092 |
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| 基金项目： | 上海市重点学科(岩土工程)基金资助项目 |
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| 摘 要： | 上海的第四纪沉积土层呈水平层状分布，市区的土层厚度约为270－290m，年平均地下水位0.5-0.7m。上海地区上覆深厚、饱和的沉积土层，对土层的地震反应特性具有重要的影响。基于动力耦合理论，将上海深厚饱和覆盖土层视为由固相和液相组成的两相饱和多孔介质，建立了能够反映上海土层深厚、饱和特点的地震反应计算模型。然后应用该模型，以El Centro,Taft，苏南和唐山地震波作为基岩输入加速度，对深度280m的上海深厚覆盖土层进行了动力耦合地震反应计算，并对加速度、振动孔隙水压力和地基震陷结果进行了分析。
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| 关 键 词： | 地震反应 深厚土层 饱和土 耦合分析 上海 振动孔隙水压力 |
| 文章编号： | 1000-7598-(2002)04-0411-06 |
| 修稿时间： | 2001年6月20日 |
Coupled seismic response analysis of deep saturated soil covering layers in Shanghai |
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| HUANG Yu,YE Wei-min,TANG Yi-qun,CHEN Zhu-chang.Coupled seismic response analysis of deep saturated soil covering layers in Shanghai[J].Rock and Soil Mechanics,2002,23(4):411-416. |
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| Authors: | HUANG Yu YE Wei-min TANG Yi-qun CHEN Zhu-chang |
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| Abstract: | The Quaternary sedimentary soil in Shanghai is horizontally distributed layers with a depth up to270-290m or so in the urban area and with annual groundwater table of 0.5-0.7m from the surface.Therefore,the sedimentary soil of Shanghai is deep and fully saturated and has important influences upon earthquake response of soil layers.Based on the dynamic coupled theory,the saturated soil was modeled as a porous media system with two phases:solid and fluid phases.A new numerical model for predicting the seismic response of soil layers was developed to describe the characters of deep saturated soil deposits.Then the seismic response of Shanghai horizontal soil layer of depth280m,which is subjected to four base excitations(El Centro,Taft,Sunan and Tangshan Earthquakes),was studied in terms of dynamic coupled computation with the proposed model.The calculation results of acceleration,pore water pressure and earthquake subsidence were also investigated. |
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| Keywords: | seismic response deep soil layers saturated soil coupled analysis Shanghai |
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