土的动模量和阻尼比的经验估计  

THE EMPIRICAL EVALUATION OF SOIL MODULI AND DAMPING RATIO FOR DYNAMIC ANALYSIS

作　　者：陈国兴[1] 谢君斐[2] 张克绪[2] 

机构地区：[1]哈尔滨建筑大学,中国哈尔滨150006 [2]国家地震局工程力学研究所,中国哈尔滨150080

出　　处：《地震工程与工程振动》1995年第1期73-84,共12页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金资助项目

摘　　要：本文对现有土的动应力-应变关系试验成果进行了分析和总结,推荐了用不同物性指标估算G_(max)的经验公式,用塑性指数I_p描述G/G_(max)～γ和λ～γ关系的经验曲线,并提出了用I_P为参数的G_(max)、G/G_(max)～γ和λ～γ曲线的经验公式,对工程应用颇有实用价值。In this paper the authors have analyzed the previous published test data of cyclic shear stress - strains relationship for various soils and recommended the empirical formulas of evaluating Cmax expressed as a funbtion of the various indexes of soil physical properties and the empirical charts between plasticity index IP versus both moduli reduction curves G/Gjmax and damping ratio curves Based on this,the authors have proposed empirical correlations between parameter IP versus Gmax,G/Gmax- and curves. These data will be great valuable to engineering practices.

关 键 词：土动力学 应力-应变关系 阻尼比 土 动模量 

分 类 号：TU43[建筑科学—岩土工程]