| 武广客运专线红粘土地基固结变形特性研究 |
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| 引用本文： | 王亮亮,杨果林. 武广客运专线红粘土地基固结变形特性研究[J]. 工程勘察, 2010, 0(3): 1-5 |
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| 作者姓名： | 王亮亮 杨果林 |
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| 作者单位： | 中南大学土木建筑学院; |
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| 基金项目： | 国家自然科学基金资助项目(50778180);;铁道部科技研究开发计划项目(2005K002-B-2-1) |
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| 摘 要： | 客运专线对地基变形要求非常严格,需要对红粘土地基的固结变形进行深入研究。选取一线路横断面并在不同深度埋设了3个单点沉降计,监测红粘土地基不同深度的沉降,在监测断面附近不同深度钻孔取样,进行室内固结及膨胀性实验,根据现场监测数据和室内试验结果,研究了红粘土地基的变形特性。研究表明:红粘土从表层到底层压缩性逐渐增大;中层土体的回弹性、粘滞性均比上下层大;红粘土的膨胀性对地基的变形规律影响较大,修建在红粘土地基上的客运专线路基必须有足够的换填高度,以抵制地基的膨胀压力;在修筑上部结构前应放置足够长的时间,使地基土体内部应力或变形能够充分调整完成,从而减少工后变形。
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| 关 键 词： | 客运专线 红粘土 固结变形 |
Study on consolidation deformation characteristics of red clay foundation along Wuhan-Guangzhou Passenger Line |
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| Wang Liangliang,Yang Guolin. Study on consolidation deformation characteristics of red clay foundation along Wuhan-Guangzhou Passenger Line[J]. Geotechnical Investigation & Surveying, 2010, 0(3): 1-5 |
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| Authors: | Wang Liangliang Yang Guolin |
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| Affiliation: | School of Civil and Architectural Engineering;Central South University;Changsha 410075;China |
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| Abstract: | Passenger Transport line has strict requirement about foundation deformation,so the law of red clay foundation consolidation deformation needs to be further researched.Embed three single-point settlement sensors at different depths to measure amount of deformation,combined with consolidation and swell-shrinking test result,system analysis of red clay foundation deformation characteristics has been conducted.Research results indicate that the compressibility increases with depth increasingly;the capability o... |
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| Keywords: | Passenger Transport line red clay consolidation deformation |
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