温度变化对水泥土渗透特性影响试验  

Tests on influence of temperature variation on permeability of cemented soil

作　　者：陈四利 李锋 侯芮 倪春雷 CHEN Si-li;LI Feng;HOU Rui;NI Chun-lei(School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China;Qingdao Public Works Development Center, Qingdao 266071, China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,沈阳110870 [2]青岛市建筑工务发展中心,山东青岛266071

出　　处：《沈阳工业大学学报》2020年第4期453-458,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(51608332,51279109)。

摘　　要：为了分析温度变化对水泥土渗透性的影响,进行了不同温度下水泥土的三轴压缩渗透试验,研究了海水和清水环境中不同水泥掺量和不同温度下水泥土的渗透系数变化规律,通过回归方法,得到了海水环境或清水环境的水泥土渗透系数随温度变化的回归曲线方程.结果表明,在海水环境或清水环境下,水泥土的渗透系数均随着温度的增加而逐步增大,随着水泥掺量的增加而逐步降低;随着三轴压缩中轴向应力的增加,水泥土的渗透系数变化规律呈现出U形分布形式;在同一温度下,海水环境下的水泥土渗透系数大于清水环境下的水泥土渗透系数.In order to analyze the effect of temperature variation on the permeability of cemented soil,the triaxial compression penetration tests of cemented soil under different temperatures were carried out.The variation law of permeability coefficient of cemented soil under different cement contents and temperatures in both seawater and clean water environments was studied.The regression curve equation of permeability coefficient of cemented soil in clean water and seawater environments with temperature variation was obtained through the regression method.The results show that the permeability coefficient of cemented soil gradually increases with the increasing temperature,and gradually decreases with the increasing cement content in both seawater and clean water environments.The permeability coefficient of cemented soil shows a U-shaped distribution with the increasing axial stress during triaxial compression.At the same temperature,the permeability coefficient of cemented soil in seawater environment is greater than that in the clean water environment.

关 键 词：水泥土 三轴压缩 渗透系数 温度 海水环境 清水环境 水泥掺量 回归方程 

分 类 号：TU411[建筑科学—岩土工程]