输电线路地基软黏土的单调剪切特性研究  

Study on Monotonic Shear Characteristics of Soft Clay in Transmission Line Foundation

作　　者：陈征远 郑圣 钱成雷 吴昊 徐慧 涂德敏 Chen Zhengyuan;Zheng Sheng;Qian Chenglei;Wu Hao;Xu Hui;Tu Demin

机构地区：[1]温州电力设计有限公司 [2]温州大学建筑工程学院

出　　处：《城市建筑》2023年第24期218-220,共3页Urbanism and Architecture

摘　　要：文章针对输电线路地基获取的原状软黏土,进行了一系列应变控制的单调单剪试验,研究了不同初始固结压力对软黏土的剪切强度的影响。研究表明:原状土的抗剪强度随着初始固结压力的增大而不断变强,软黏土存在一定的结构性;峰值孔压随着初始固结压力的增大而变大。获得了温州原状土的破坏包络线,不同初始固结压力下的有效应力路径朝着破坏包络线的方向移动。A series of strain controlled monotonic simple shear tests were carried out on undisturbed soft clay in transmission line foundation,and the effects of different initial consolidation pressures on the shear strength of the soft clay were studied.The results show that the shear strength of undisturbed soil increases with the increase of initial consolidation pressure,and the soft clay has a certain structure.The peak pore water pressure increases with the increase of initial consolidation pressure.The failure envelope of Wenzhou undisturbed soil is found,and the effective stress path under different initial consolidation pressures moves towards the failure envelope.

关 键 词：软黏土 单调剪切 抗剪强度 破坏包络线 

分 类 号：TU753.7[建筑科学—建筑技术科学]