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| 膨胀土干湿循环胀缩裂隙演化的CT试验研究 | |
| 引用本文： | 卢再华,陈正汉,蒲毅彬.膨胀土干湿循环胀缩裂隙演化的CT试验研究[J].岩土力学,2002,23(4):417-422. |
| 作者姓名： | 卢再华 陈正汉 蒲毅彬 |
| 作者单位： | 1. 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000;海军工程大学基础部,湖北武汉430033 2. 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000;后勤工程学院土木系,重庆400041 3. 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 |
| 摘 要： | 对南阳重塑膨胀土在干湿循环过程中裂隙的演化进行了CT试验研究，试样的CT图像显示了原有裂隙开展，新裂隙产生，裂缝数量增加并连通，最后形成裂隙网络的过程。定义了基于CT数据的裂隙损伤变量，分析了裂隙损伤变量随累计干缩体变的变化规律。 |
| 关 键 词： | 胀缩裂隙 膨胀土 干湿循环 CT技术 雨水入渗 蒸发 气候条件 |
| 文章编号： | 1000-7598-(2002)04-0417-06 |
| 修稿时间： | 2001年7月24日 |
A CT study on the crack evolution of expansive soil during drying and wetting cycles |
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| LU Zai-hua ,CHEN Zheng -han ,PU Yi-bin.A CT study on the crack evolution of expansive soil during drying and wetting cycles[J].Rock and Soil Mechanics,2002,23(4):417-422. | |
| Authors: | LU Zai-hua CHEN Zheng -han PU Yi-bin |
| Institution: | LU Zai-hua 1,2,CHEN Zheng -han 1,3,PU Yi-bin 1 |
| Abstract: | The crack evolution of Nanyang remolded expansive soil during drying and wetting cycles was researched with computerized tomography.According to the CT images,the original cracks in soil developed,new cracks gradually generated and at last,a crack net came into being.A crack damage variable based on the CT data was defined and its relationship with the accumulated drying volume change of soil was analyzed. |
| Keywords: | expansive soil drying and wetting cycles crack computerized tomography |
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