| 基于袋装砂井排水固结法处理软基的沉降过程流固耦合模拟 |
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| 引用本文： | 余成华,李菊凤.基于袋装砂井排水固结法处理软基的沉降过程流固耦合模拟[J].岩土力学,2010,31(3):939-943. |
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| 作者姓名： | 余成华 李菊凤 |
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| 作者单位： | 1. 浙江大学 研究生院，杭州 310058；2. 中国地质大学出版社，武汉 430074；3. 深圳市勘察研究院有限公司，深圳 518026 |
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| 摘 要： | 在软土分布地区，高速公路的“桥头跳车”、路面开裂等一直是困扰工程建设者的最主要问题，而对软土路基的沉降过程进行模拟预测则是其中的难点。利用改进的剑桥模型，采用FLAC3D有限差分软件，以珠江三角洲某高速公路试验段的地层数据进行袋装砂井排水固结法处理软土地基沉降过程的流固耦合模拟，通过模拟结果来对比实际检测的应力、应变情况。结果表明，表面沉降和分层沉降的模拟值与实测值能很好地吻合，模型能较为真实地反映路基沉降变形的实际情况。
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| 关 键 词： | 软基沉降 砂井排水固结 数值模拟 FLAC3D |
| 收稿时间： | 2009-05-27 |
Fluid-solid coupling simulation of settlement process in soft ground based on drainage consolidation method with sand well |
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| YU Cheng-hua,LI Ju-feng.Fluid-solid coupling simulation of settlement process in soft ground based on drainage consolidation method with sand well[J].Rock and Soil Mechanics,2010,31(3):939-943. |
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| Authors: | YU Cheng-hua LI Ju-feng |
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| Institution: | 1. School of Graduate, Zhejiang University, Hangzhou 310058, China; 2. China University of Geosciences Press, Wuhan 430074, China; 3. Shenzhen Investigation & Research Institute Co. Ltd., Shenzhen 518026, China |
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| Abstract: | The problems, such as pavement cracking, differential settlement between bridge and roadbed, are the most important matters that engineers must be up against. The simulation of soft ground settlement is one of the difficulties. This coupled simulation of seepage and consolidation mainly uses the improved Cambridge model, depends on the software FLAC3D which is a finite difference software. As an example, the test sections’ data of an expressway in the Pearl River Delta is used for simulating soft ground settlement, the accuracy of this modeling can be validated by contrasting between the results and actual monitoring data. The result shows that the simulating numerical values and the measured data has good match, whether for the surface settlement or for the stratified settlement, it means that the simulating model can be used to reflect the soft ground settlement. |
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| Keywords: | FLAC~(3D) soft ground settlement drainage consolidation by sand well numerical simulation FLAC~(3D) |
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