【摘要】 阐述了黄土的动强度与液化、震陷性与动变形、动应力与动应变关系等基本动力学特性及其影响因素。基于黄土地区部分黄土动力学性质的试验结果,运用最小二乘法原理进行了相关性分析,揭示了黄土的动力学参数指标(骨干曲线初始切线模量,骨干曲线渐进线截距,最大动阻尼比)和湿陷性指标(湿陷系数)与黄土的物性指标(塑性指数、孔隙比、含水量)和固结围压之间的相关关系,建立了黄土动力学参数与物理力学指标之间线性关系的系数,为黄土工程的动力反应与稳定性分析提供了研究基础。更多还原

【Abstract】 The basic dynamic characteristics of loess such as the dynamic strength and liquefaction,seismic subsidence and dynamic deformation,the relation between dynamic stress and dynamic strain are represented in this article.The correlation analysis is carried out by least square method based on the experiment results of dynamic characteristics in loess region,the correlation ship between the dynamic index of loess(initial tangent modulus of dynamic stress-dynamic strain hyperbola,asymptotic line intercept of dynamic stress-dynamic strain hyperbola,maximum dynamic damping ratio) and natural parameters of loess(plastic index,void ratio,water content) is explored,and the coefficients of linear relationship between the dynamic index and natural parameters of loess are set up.These study provides the basis for studying the dynamic reaction analysis and stability calculation in loess project.更多还原