| 基于ADINA的软土坝基沉降分析 |
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| 引用本文： | 杨坪,杨军,许德鲜,肖异智.基于ADINA的软土坝基沉降分析[J].力学学报,2008,16(4):533-538. |
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| 作者姓名： | 杨坪 杨军 许德鲜 肖异智 |
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| 作者单位： | 同济大学岩土工程重点实验室 上海 200092;
同济大学地下建筑与工程系 上海 200092;
广州市市政工程设计研究院 广州 510060;
西北综合勘察设计研究院 西安 710003;
舟山市水利勘测设计院 舟山 316000 |
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| 基金项目： | 上海市博士后科研基金资助项目(05R214145). |
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| 摘 要： | 为了预测拟建软土坝基的沉降量,弄清软土坝基的沉降规律及孔隙水压力的消散规律,本文采用有限元分析程序,对大坝软土坝基的沉降进行了分析研究。研究结果表明:大坝的沉降经历了初始沉降、快速沉降和缓慢沉降3个阶段;通过分析,获得了坝基的沉降规律为Hill模型,孔隙水压力的消散规律为指数衰减Expdec2模型,并得出了坝基的沉降量、附加沉降量及水平位移值,为大坝建设和类似坝基沉降预测提供了有价值的参考。
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| 关 键 词： | Adina 坝基 沉降 孔隙水压力 |
| 收稿时间： | 2007-06-21 |
| 修稿时间： | 2007-09-19 |
FINITE ELEMENT ANALYSIS OF SETTLEMENT OF SOFT SOIL FOUNDATION UNDER RESERVOIR DAM |
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| YANG Ping,YANG Jun,XU Dexian,XIAO Yizhi.FINITE ELEMENT ANALYSIS OF SETTLEMENT OF SOFT SOIL FOUNDATION UNDER RESERVOIR DAM[J].chinese journal of theoretical and applied mechanics,2008,16(4):533-538. |
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| Authors: | YANG Ping YANG Jun XU Dexian XIAO Yizhi |
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| Institution: | Key Laboratory of Geotechnical Engineering, Tongji University| Shanghai 200092;
Department of Geotechnical Engineering, Tongji University, Shanghai 200092;
Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060;
Northwest Research Institute of Engineering Investigations and Design, Xi an 710003;
Zhoushan Survey and Design Instidute of Water Conservancy, Zhoushan 316000 |
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| Abstract: | It is to predict the settlement of soft soil foundation under reservoir dam and to study the law of settlement of soft soil foundation and the law of dissipation of pore water pressure. A plane-strain FEM model was established to analyze the settlement of soft soil foundation for reservoir dam. The results showed that the settlement of soft soil foundation included initial stages, quick stages and slow stages. The laws governing the settlement and the dissipation of pore water pressure could be described with the Hill model and the Expdec2 model, respectively. The maximum of settlement and the additional settlement due to dam mass and the maximum of horizontal displacement were obtained. The results can offer an important reference to the construction of dam and the subsidence of similar soft soil foundation. |
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| Keywords: | Adina Foundation of dam Settlement Pore water pressure |
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