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| 粒间吸引力对非饱和土变形及强度的影响分析 | |
| 引用本文： | 李顺群,肖成志,吕毅兰,魏超.粒间吸引力对非饱和土变形及强度的影响分析[J].武汉理工大学学报(交通科学与工程版),2008,32(6). |
| 作者姓名： | 李顺群 肖成志 吕毅兰 魏超 |
| 作者单位： | 1. 天津城市建设学院土木工程系,天津,300384;天津市软土特性与工程环境重点实验室,天津,300384 2. 河北工业大学土木工程学院,天津,300132 3. 沈阳万隆照明工程有限公司,沈阳,110011 4. 浙江工贸职业技术学院,温州,325003 |
| 基金项目： | 中国博士后科学基金项目 ， 天津市高等学校科技发展基金计划项目 |
| 摘 要： | 基于球形颗粒理想化最松散堆积模型, 研究了弹性条件下外加静水压力和粒间吸引力对非饱和土变形和强度的不同影响.研究表明, 对于变形问题, 外加静水压力引起的变形包括颗粒缺位体积和弹性变形2部分; 粒间吸引力引起的变形只包括颗粒的弹性变形.因此, 在粒间吸引力作用下土体的体变要大大小于等值外加静水压力作用下产生的体变.对于强度问题,主要研究了摩擦力和咬合力.对于前者, 2种加荷方式都有作用, 但外加静水压力的作用要大于粒间吸引力的作用; 对于后者, 外加静水压力有增强作用而粒间吸引力则没有. |
| 关 键 词： | 非饱和土 Bishop假设 粒间吸引力 外加静水压力 |
Function of Attraction between Particles Induced by Unsaturation on Deformation and Shear Strength in Unsaturated Soils |
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| Li Shunqun,Xiao Chengzhi,Lu Yilan,Wei Chao.Function of Attraction between Particles Induced by Unsaturation on Deformation and Shear Strength in Unsaturated Soils[J].journal of wuhan university of technology(transportation science&engineering),2008,32(6). | |
| Authors: | Li Shunqun Xiao Chengzhi Lu Yilan Wei Chao |
| Institution: | Department of Civil Engineering;Tianjin Institute of Urban Construction;Tianjin 300384;Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment;Tianjin 300384;School of Civil Engineering;Hebei University of Technology;Tianjin 300132;Shenyang Master Lighting Engineering Co.Ltd.;Shenyang 110011;Zhejiang Industry and Trade Polytechnic;Wenzhou;325003 |
| Abstract: | Based on elastic theory and an ideal four ball-shape particle packingmodel,functions of hydrostatic pressure posed on soil sample boundary and attraction between soil particles induced by unsaturation on volumetric deformation and shear strength are studied for unsaturated soils.The study shows that deformation induced by the former force system is composed of elastic deformation of all soil particles and volume of absent particles whereas deformation induced by the latter force system only consists of the ... |
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