软黏性土力学性质的阶段性特征  

Staged characteristics of soft soil's mechanical property

作　　者：成利民 胡振明 

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032

出　　处：《水运工程》2011年第12期135-137,143,共4页Port & Waterway Engineering

摘　　要：20世纪80年代薄壁取土器采样技术普遍应用以后,从具有结构强度软黏性土的应力应变关系分析可知,结构强度破坏前多具有似弹性体特征,结构破坏后则呈现弹塑性体特征。大量土工试验资料证明软黏性土压缩指标和强度指标具有阶段性特征。弥补了早期由于取土工具、取土工艺的局限导致传统土力学对相关理论认识的不足。After the thin wall sampler was used in soft soil widely in the 1980 s, according to the data of the relations between soil＇s stress and strain with the soil＇s structure strength, the soft soil behaves quasi-elasticity before breakage and elastic-plasticity after. Many soil test data show that the soft soil＇s compression and strength indexes are lineal and phased. This paper corrects the early relevant understanding about the traditional soil mechanics theory because of the ordinary sampler and technology.

关 键 词：软黏性土 薄壁取土器 微结构 结构强度 残余结构强度 

分 类 号：TU471.8[建筑科学—结构工程]