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幂函数剪切模量成层土非线性地震反应的半解析算法
引用本文:王春玲,黄义,曹彩芹.幂函数剪切模量成层土非线性地震反应的半解析算法[J].世界地震工程,2005,21(2):85-89.
作者姓名:王春玲  黄义  曹彩芹
作者单位:西安建筑科技大学,理学院,陕西,西安,710055
基金项目:陕西省教育厅专项基金资助项目(04JK218)
摘    要:运用文献1]所建议的动态应力一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。

关 键 词:剪切模量  非线性地震反应  幂函数  半解析算法  成层土  应力一应变关系  加卸载准则  非线性方程  非均质土层  滞回特征  加载条件  场地地震  时域算法  分析技术  不规则  解析解  增量法  剪切梁  文献  土体
文章编号:1007-6069(2005)02-0085-05
修稿时间:2004年8月20日

A semi-analytic method for nonlinear seismic response of layered foundations with power function shear modulus
WANG Chun-ling,HUANG Yi,CAO Cai-qin.A semi-analytic method for nonlinear seismic response of layered foundations with power function shear modulus[J].World Information On Earthquake Engineering,2005,21(2):85-89.
Authors:WANG Chun-ling  HUANG Yi  CAO Cai-qin
Abstract: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.
Keywords:constitutive relation  non-linear behavior  hysteresis  seismic response analysis  semi-analytic method
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