负温条件下EPS轻质土强度特性试验研究  

Experimental study on strength behavior of EPS light soil under negative temperature

作　　者：冯志密 李兆宇 苏安双 王宇 郑健 FENG Zhimi;LI Zhaoyu;SU Anshuang;WANG Yu;ZHENG Jian(Water Conservancy and Farmland Station of Suiling County in Heilongjiang Province,Suiling 152200,China;Heilongjiang Province Hydraulic Research Institute,Harbin 150080,China)

机构地区：[1]黑龙江省绥棱县水利农田总站,黑龙江绥棱152200 [2]黑龙江省水利科学研究院,黑龙江哈尔滨150080

出　　处：《水利科学与寒区工程》2021年第3期10-14,共5页Hydro Science And Cold Zone Engineering

基　　金：黑龙江省自然科学基金联合引导项目(LH2019E124)。

摘　　要：本文通过三轴试验研究了在不同颗粒掺量(1%、2%、3%)和不同温度条件(20℃、0℃、-10℃、-20℃)下EPS轻质土的强度特性。结果表明,不同掺量的EPS轻质土在不同温度环境下其应力应变关系具有非线性、多阶段性以及软化性和硬化性的特征。土体强度与温度、EPS颗粒掺量及围压有关,黏聚力和内摩擦角均随EPS颗粒掺量的增加而减少,随温度的降低而增大。In this paper,the strength characteristics of EPS lightweight soil under different particle content(1%,2%,3%)and different temperature conditions(20℃,0℃,-10℃,-20℃)were studied by triaxial test.The results showed that the stress-strain relationship of EPS light soil in different particle content is nonlinear and characteristic of multiple phases and softening and hardening.Soil strength is related to temperature,EPS content and confining pressure.Cohesion and internal friction angle decrease with the increase of EPS content,and increase with the decrease of temperature.

关 键 词：EPS轻质土 三轴试验 负温 

分 类 号：TU528.2[建筑科学—建筑技术科学]