中山大学学报（自然科学版）2009，Vol.48Issue(6)：138-142,5.
含水量对加筋膨胀土强度与变形特性的影响
Effect of Water Content on Strength and Deformation Characteristics of Reinforced Expansive Soils
摘要
Abstract
Expansive soil samples reinforced with a biaxial geogrid are adopted to carry out a series of unconfined compression, consolidated and undrain tests at different water content. Effects of water content on the strength and deformation characteristics of reinforced expansive soils are studied. Water content has significant effect on the failure model of reinforced expansive soils; With increasing water content , the effect of reinforce on the stress-strain curves decreases, and the change of peak strength and residual strength decrease. Water content has little effect on the failure mode, in which all the stress-strain curves show strain-hardening; With increasing water content, both the peak strength, and increment after reinforcement decrease sharply. The effect of water content on the initial yield stress is related to the layers of reinforce.关键词
双向土工格栅/加筋膨胀土/含水量/强度与变形特性/破坏模式/南水北调工程Key words
biaxial geogrid/ reinforced expansive soils/ water content/ strength and deformation characteristics/ failure model/ South to North Water Transfer Project (SNWT)分类
土木建筑引用本文复制引用
汪明元,于嫣华,龚晓南..含水量对加筋膨胀土强度与变形特性的影响[J].中山大学学报（自然科学版）,2009,48(6):138-142,5.基金项目
国家"十一五"科技支撑计划重大基金项目资助(2006BAB04A10) （2006BAB04A10）
