检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]河海大学力学与材料学院,江苏南京211100 [2]宿迁市宿豫区水务局,江苏宿迁223800
出 处:《能源与环保》2017年第4期117-121,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基 金:国家科技支撑计划项目(2013BAB06B01)
摘 要:摩尔—库仑模型是岩土工程有限元计算中的常用模型,模型参数需通过剪切试验或三轴排水试验得出。由于软土地基材料的特殊性,试验不易得到部分参数的准确值。采用ABAQUS建模进行了软土地基算例计算,并与土力学解析解对比证明其准确性。然后对基于摩尔—库仑模型的软土地基力学参数进行了敏感性分析,得到了各参数变化引起土体沉降变化的关系曲线,提出了泊松比、弹性模量、摩擦角和内聚力对土体沉降的影响规律,可为软土地基有限元计算的参数选取提供参考。Mohr-Coulomb model is commonly used in geotechnical engineering finite element method. Parameters of the model should be obtained by shear test or triaxial drainage experiments. Due to the particularity of soft soil foundation,the experiment is not easy to get the accurate values of some parameters. The authors calculated an example of soil mechanics by ABAQUS,and the result were compared with analytical solution to prove its accuracy. Then perform sensitivity analysis of mechanical parameters for soft soil foundation based on Mohr-Coulomb Model were carried out,the relation curve of soil settlement changes caused by the parameters change were gained. The influence rules on soil settlement for poisson's ratio,elasticity modulus,friction angle and cohesion were analyzed. All these can provide reference to the parameters selection of soft soil foundation's finite element calculation.
关 键 词:软土地基 摩尔—库仑模型 力学参数 敏感性分析 ABAQUS
分 类 号:U416.1[交通运输工程—道路与铁道工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.204