摘要
采用动态应力-应变关系及其推广的Masing加卸载准则,考虑土体在地震等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相结合,提出了该动力非线性方程的半解析时域算法,以水平成层场地一维剪切梁模型为例,建立了求解土体地震反应的非线性分析技术。针对Seed Idriss给出的砂土平均曲线,分析计算了非均匀层状密砂的线性和非线性地震反应。
Dynamic constitutive relationship together with the extended Masing's rules is employed to account for nonlinear hysteretic property of soil material under transient or cyclic loadings. Incremental method and general solution of the layered soil deposits seismic response are combined to develop a semi-analytic calculating technique in the time domain for dynamic nonlinear problem. Afterwards, a truly nonlinear analysis procedure is presented and numerically implemented for evaluating the linear and nonlinear seismic response of horizontally-layered sand deposits.
出处
《地震工程与工程振动》
CSCD
北大核心
2005年第3期115-119,共5页
Earthquake Engineering and Engineering Dynamics
基金
陕西省自然科学基金项目(2002E212)
关键词
本构关系
非线性
滞变
地震反应分析
半解析法
constitutive relation
non-linear
hysteresis
seismic response analysis
semi-analytic method
