摘要
为确定新型土工合成材料轻量土在不同发泡颗粒(EPS)粒径下的变形机理,通过三轴固结不排水试验系统研究其变形强度特性的影响规律。试验结果表明,轻量土应力-应变关系具有非线性、多阶段性、应变软化和应变硬化特性;抗剪强度破坏包络线有折线型与直线型两种,取决于自身结构强度与围压;粘聚力与内摩擦角均随EPS粒径的增大而递减。
To certify novel compound lightweight soil material,tri-axial consolidation tests are carried out to investigate the influence law of the deformation and strength characters.The results show that its stress-strain relation curves have characteristics of nonlinearity,multi-stage,strain hardening and strain softening;the shear strength failure envelope curves have broken line and straight line,which is determined by its structure strength and the consolidation pressure;cohesive strength and internal frictional angle decrease with the increase of EPS grain sizes.
出处
《水电能源科学》
北大核心
2013年第2期138-141,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(41072218)
关键词
轻量土
发泡聚苯乙烯
粒径
三轴试验
变形
强度
lightweight soil
EPS
grain size
tri-axial test
deformation
strength
