摘要
对土的蠕变性质及其本构模型研究进行了系统地总结,主要内容包括:时间和应力对土蠕变性质的影响、土蠕变破坏准则、蠕变势和塑性势关系、蠕变微观机制、宏观和微观本构模型等。此外,基于上述总结,提出了土等效变形过程的概念,探讨了土蠕变模型中时间效应的表述方式,提出了一种可加快土蠕变试验的方法。
A review of the creep behavior of soil and its constitutive models is performed. The contents of the review include the influences of time and stress on soil creep, the criterion for creep failure, the relation between creep potential and plastic potential, microscopic mechanism of soil creep, macroscopic and microscopic creep models. Based on the review, equivalent deformation processes for soil are proposed. The proper description of time effect in creep model is discussed. A method for accelerating creep test is proposed.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2011年第8期2251-2260,共10页
Rock and Soil Mechanics
基金
山东大学自主创新基金项目(No.2010HW008)
岩土力学与工程国家重点实验室开放课题(No.Z011005)
关键词
土力学
蠕变
微观机制
本构模型
等效变形过程
时间效应
加快土蠕变试验方法
soil mechanics
creep
microscopic mechanism
constitutive model
equivalent deformation process
time effect
methodfor accelerating creep test
