近代海积软土结构性及弹-塑性模型研究

STUDY ON THE STRUCTURAL CHARACTERISTICS AND ELASTIC-PLASTIC MODEL OF RECENT MARINE SOFT SOIL

摘要: 土的结构性数学模型是 2 1世纪土力学的核心问题。本文分析了近代海积软土的结构性以及其塑性体应变硬化和塑性偏应变硬化的机制 ,建立了弹塑性本构模型 ,模型采用了具有双硬化参数的屈服轨迹及含结构性参数 m的塑性应变方程。

Abstract: The study of mathematical model of structured soils is the key of soil mechanics in the coming century. In this paper, the structural characteristics of one recent marine soft soil are investigated, and much is attributed to probe the hardening mechanism of plastic volumetric strains and plastic shear strains, then the yield locus with two hardening parameters in p q stress plane is identified , the plastic stress strain relationship is finally formulated with structural parameterm.