| 排水固结法加固软基变形简化计算分析 |
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| 引用本文： | 房后国,王常明,程祖锋.排水固结法加固软基变形简化计算分析[J].力学学报,2005,13(1):135-139. |
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| 作者姓名： | 房后国 王常明 程祖锋 |
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| 作者单位： | 吉林大学建设工程学院,长春130026 |
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| 基金项目： | 国家自然科学基金项目(No40172092);吉林大学创新基金项目 |
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| 摘 要： | 插板和砂井堆载预压是处理软基有效方法之一,现有的沉降变形计算方法大部分采用轴对称理论的解析解和以太 沙基或比奥固结理论为基础的数值解,仍较为复杂。根据软基排水固结机理,采用固结度等效原理,对渗透系数进行调整,把 砂井(插板)地基简化为均质成层地基。运用有限元对某软土路基处理工程进行简化计算,并和监测结果进行对比分析,对简 化计算方法进行验证。发现具有较好的准确性,为实际软基处理工程的沉降变形分析提供了一种简单实用的方法。
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| 关 键 词： | 堆载预压 砂井地基 有限元 固结度 |
| 收稿时间： | 2003-12-25 |
| 修稿时间： | 2004-03-12 |
ANALYSIS OF A SIMPLIFIED METHOD FOR SETTLEMENT ASSESSMENT OF A SOFT CLAY FOUNDATION WITH VERTICAL DRAINS |
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| FANG Houguo,WANG Changming,CHENG Zufeng.ANALYSIS OF A SIMPLIFIED METHOD FOR SETTLEMENT ASSESSMENT OF A SOFT CLAY FOUNDATION WITH VERTICAL DRAINS[J].chinese journal of theoretical and applied mechanics,2005,13(1):135-139. |
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| Authors: | FANG Houguo WANG Changming CHENG Zufeng |
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| Institution: | Construction Engineering College, Jilin University, Changchun130026 |
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| Abstract: | Preloading with vertical drains is an effective treatment method for a soft clay foundation. Existing analytical solutions and numerical simulation based on Terzaghi and Biot,s theories are complicated for settlement assessment. This paper presents a simplified method for settlement assessment by adjusting permeability coefficient based on equivalence of consolidation degree, and then treating the soft clay foundation with vertical drains as a homogeneous stratified foundation. A case study was used to exam applicability of the method. The comparison between the simulated results with FEM and observed deformation shows a good matching. The presented method can provide a simple and practical assessment of settlement for a soft clay foundation treatment with vertical drains. |
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| Keywords: | Surcharge Foundation with sand drains FEM Consolidation degree |
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