灰土增强体复合土动力特性试验研究  

Experimental Study on Dynamic Properties of Silt Composite Sample with Lime-soil Reinforcement

作　　者：曾国红[1] 张卫平[2] 白晓红[1] 王梅[1] 孙晋 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024 [2]太原市建筑设计研究院,山西太原020012 [3]山西建筑工程职业技术学院,山西太原030006

出　　处：《太原理工大学学报》2009年第2期156-159,共4页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(50578104);太原市专项基金资助项目(07010779)

摘　　要：通过灰土增强体复合试样的动三轴试验,研究了动荷载作用下围压、置换率、初始干密度及初始含水量对复合试样动弹模量的影响。研究表明:经过置换后,复合试样的动弹模量得到提高,灰土增强体复合试样的动弹模量随应变水平的增长而降低,在相同的动应变水平下,随围压、置换率、初始干密度的增大而增大,随初始含水量的增大而降低;粉土复合试样的最大动弹模量也随围压、置换率、初始干密度的增大而增大,随初始含水量的增大而降低。Based on dynamic triaxial tests, the dynamic elastic modulus of silt composite sample with lime-soil reinforcement was studied, and the influences of confining pressure, replacement ratio, initial dry density and initial moisture content were investigated. The results show that the dynamic modulus of composite sample was much higher than that of pure silt. The dynamic modulus of silt composite sample with lime-soil reinforcement decreased with increasing strain. At the same strain level, the dynamic modulus increased as the confining pressure, the replacement ratio, and the initial dry density increased, and decreased as the moisture content increased. The maximum dynamic modulus of composite sample increased as the confining pressure, the replacement ratio, and the initial dry density increased, and decreased as the moisture content increased.

关 键 词：灰土增强体 粉土复合试样 动三轴试验 动弹模量 

分 类 号：TU472[建筑科学—结构工程]