摘要
运用文献[1]所建议的动态应力-应变关系及其推广的Masing加卸载准则,考虑土料在地震等产生的不规则加载条件下的非线性滞回特征,将增量法与相应场地地震线性反应解析解[2]相结合,提出了该动力非线性方程的半解析时域算法,基于改进的一维剪切梁模型,对剪切模量是其深度的某一幂函数的成层非均质土层,建立了求解土体地震反应的非线性分析技术。针对文献[2]中的土层剖面,做了计算、分析和讨论。
Dynamic constitutive relationship and the extended Masing's rules given in ref.[1] are applied to account for nonlinear hysteretic property of soil material under seismic or cyclic loadings. Incremental method and the general solution to linear seismic response of layered foundations with power function shear modulus are combined to develop a semi-analytic calculating technique for dynamic nonlinear problem of layered soils. Afterwards, a nonlinear analysis procedure is presented and numerically implemented for evaluating seismic response of the sorts of foundations. Based on numerical example for the problem given in ref.[2], analysis and discussion are performed.
出处
《世界地震工程》
CSCD
北大核心
2005年第2期85-89,共5页
World Earthquake Engineering
基金
陕西省教育厅专项基金资助项目(04JK218)
