| 真空预压加固软土地基的应力路径分析 |
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| 引用本文： | 王绪民,刘富勤,马国华. 真空预压加固软土地基的应力路径分析[J]. 建筑技术, 2010, 41(3): 246-248 |
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| 作者姓名： | 王绪民 刘富勤 马国华 |
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| 作者单位： | 1. 湖北工业大学土建学院,430068,武汉
2. 中建三局二公司,430070,武汉 |
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| 摘 要： | 根据有效应力原理,从应力路径的角度分析真空预压加固软土地基的机理,并比较传统堆载预压加固软土地基的应力路径变化情况。通过分析发现:真空预压加固软土地基的应力路径与堆载预压加固软土地基的应力路径完全不同,真空预压时土体的应力状态介于p轴与K0线之间而堆载预压时土体应力状态介于K0与Kf线之间,由此引起的地基变形、强度增长的特性和影响因素也不尽相同。
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| 关 键 词： | 真空预压 堆载预压 应力路径 |
ANALYSIS OF STRESS PATH OF IMPROVING SOFT CLAY BY VACUUM PRELOADING |
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| WANG Xu-min,LIU Fu-qin,MA Guo-hua. ANALYSIS OF STRESS PATH OF IMPROVING SOFT CLAY BY VACUUM PRELOADING[J]. Architecture Technology, 2010, 41(3): 246-248 |
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| Authors: | WANG Xu-min LIU Fu-qin MA Guo-hua |
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| Affiliation: | 1.School of Civil Engineering/a>;Hubei University of Technology/a>;430068/a>;Wuhan/a>;China/a>;2.No.2 Co./a>;Ltd./a>;of China Construction Third Bureau/a>;430070/a>;China |
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| Abstract: | According to the principle of effective stress, the mechanism of soft clay consolidation by vacuum preloading based on stress path analysis is studied. Compared with the stress path of the condition under heaped preloading. It is found that the stress state changes from P-axes to Ko line under vacuum preloading and changes from Ko line to Kf line under heaped preloading. The stress paths＇ difference result in the different influence on the deformation and the characteristic of strength improving of soft clay consolidated with heaped preloading and vacuum preloading method. |
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| Keywords: | vacuum preloading heaped preloading stress path |
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