不同含水量下原状离石黄土的结构强度
发布时间：2018-10-08 14:00
【摘要】：对不同含水量的原状离石黄土进行了单轴和常规三轴压缩试验,研究了原状离石黄土的结构强度随含水量和围压的变化规律。试验表明,单轴压缩条件下离石黄土的结构强度随含水量的增加呈对数函数减少;常规三轴压缩条件下离石黄土的结构强度受含水量和围压的影响显著。运用Mohr-Coulomb理论对原状离石黄土的强度参数(C,鐖)与含水量的变化规律进行了研究,内聚力C随含水量的增加呈指数函数规律下降,摩擦系数tan鐖随含水量的增加呈线性函数规律下降,期望该研究成果能为黄土地区的工程设计提供参考。
[Abstract]:Uniaxial and conventional triaxial compression tests were carried out to study the variation of structural strength with water content and confining pressure of undisturbed Lishi loess with different moisture content. The experimental results show that the structural strength of Lishi loess decreases with the increase of water content in uniaxial compression condition, and the structural strength of Lishi loess under conventional triaxial compression condition is significantly affected by water content and confining pressure. The change of strength parameters (C, P) and water content of undisturbed Lishi loess is studied by using Mohr-Coulomb theory. The cohesion C decreases with the increase of water content in exponential function. The coefficient of friction (tan) decreases linearly with the increase of water content. It is expected that the research results can be used as a reference for engineering design in loess area.
【作者单位】： 西安科技大学地质与环境学院;商洛市地质环境监测中心站;长安大学地质工程与测绘学院;
【基金】：国家自然科学基金(41572287,41702298)
【分类号】：TU444
本文编号：2257023
[Abstract]:Uniaxial and conventional triaxial compression tests were carried out to study the variation of structural strength with water content and confining pressure of undisturbed Lishi loess with different moisture content. The experimental results show that the structural strength of Lishi loess decreases with the increase of water content in uniaxial compression condition, and the structural strength of Lishi loess under conventional triaxial compression condition is significantly affected by water content and confining pressure. The change of strength parameters (C, P) and water content of undisturbed Lishi loess is studied by using Mohr-Coulomb theory. The cohesion C decreases with the increase of water content in exponential function. The coefficient of friction (tan) decreases linearly with the increase of water content. It is expected that the research results can be used as a reference for engineering design in loess area.
【作者单位】： 西安科技大学地质与环境学院;商洛市地质环境监测中心站;长安大学地质工程与测绘学院;
【基金】：国家自然科学基金(41572287,41702298)
【分类号】：TU444
【相似文献】
相关期刊论文 前4条
1 王克鲁,胡碧茹,严富华,郭旭东;北京斋堂盆地黄土结构构造与形成环境[J];北京地质;1998年01期
2 卢曦;郑松林;邵晨;寇宏滨;;结构强度对低载强化特性影响的初步研究[J];中国机械工程;2006年06期
3 杨爱武;许鹏程;张静娴;;天津滨海新区吹填软土结构强度形成影响因素分析[J];路基工程;2013年03期
4 杨爱武;孔令伟;;吹填软土蠕变过程中结构强度变化及微观机理分析[J];工程地质学报;2014年02期
，本文编号：2257023
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2257023.html
