| 地表蒸发条件下的膨胀土初始开裂分析 |
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| 引用本文： | 郑少河,金剑亮,姚海林,葛修润.地表蒸发条件下的膨胀土初始开裂分析[J].岩土力学,2006,27(12):2229-2233. |
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| 作者姓名： | 郑少河 金剑亮 姚海林 葛修润 |
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| 作者单位： | 1. 上海市建筑科学研究院，上海 200032；2. 中国科学院武汉岩土力学研究所，武汉 430071 |
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| 摘 要： | 针对地表蒸发条件下的膨胀土开裂问题，从定性和定量两个方面进行了分析，提出了膨胀土初始开裂的基质吸力临界判据，经比较与现场实测结果基本一致。采用线弹性力学方法，研究了地表蒸发条件下的膨胀土初始开裂深度，对其与土体抗拉强度、泊松比及密度等特性参数的关系进行了详细的论述。
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| 关 键 词： | 膨胀土 非饱和土 基质吸力 初始开裂 地表蒸发 |
| 文章编号： | 1000-7598-（2006）12-2229-05 |
| 收稿时间： | 2005-02-28 |
| 修稿时间： | 2005-02-28 |
Analysis of initial cracking behavior of expansive soil due to evaporation |
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| ZHENG Shao-he,JIN Jian-liang,YAO Hai-lin,Ge Xiu-run.Analysis of initial cracking behavior of expansive soil due to evaporation[J].Rock and Soil Mechanics,2006,27(12):2229-2233. |
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| Authors: | ZHENG Shao-he JIN Jian-liang YAO Hai-lin Ge Xiu-run |
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| Institution: | 1. Shanghai Research Institute of Building Sciences, Shanghai 200032, China; 2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | The cracking behavior of expansive soil due to evaporation are analyzed qualitatively and quantitatively. The critical value of matrix suction for initial cracking is presented, which is according with results of the site test. With the linear elastic mechanics, the depth of initial cracking for expansive soil is put forward and the relations between the depth of initial cracking and soil parameters such as tensile strength, Poisson’s ratio and gravity density, are discussed in detail. |
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| Keywords: | expansive soil unsaturated soil matrix suction initial cracking behavior surface evaporation |
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