岩土力学2009，Vol.30Issue(11)：3469-3475,7.
三维黏弹性介质人工边界研究
Study of three dimensional viscoelastic medium artificial boundary
摘要
Abstract
In order to get the artificial boundary that suits to analyze nonlinear structure-foundation interaction problems, the viscoelastic artificial boundary simulating radiation damping of the far field medium was obtained from the elastic wave theory and viscoelasticity theory. The ability of viscoelastic artificial boundary to simulate radiation damping and methods of seismic wave motion input were studied. The results show good precision when simulating radiation damping of far fields with the viscoelastic artificial boundary obtained from this paper in solving structure-foundation interaction problems. Precise results can be obtained through seismic wave motion input methods obtained in this paper whether the input wave is simple harmonic one or simple nonharmonic one. The displacement peak value at the free earth surface is n = 2e~(-αx) times as high as that of input wave in viscoelastic medium.关键词
结构-地基动力相互作用/黏弹性人工边界/黏弹性介质/地震波动输入Key words
structure-foundation interaction/ viscoelastic artificial boundary/ viscoelastic medium/ seismic wave motion input分类
建筑与水利引用本文复制引用
张波,李术才,杨学英,孙国富,葛颜慧..三维黏弹性介质人工边界研究[J].岩土力学,2009,30(11):3469-3475,7.基金项目
国家自然科学基金面上项目(No.50574053) （No.50574053）
国家自然科学基金委重点项目(No.50539080). （No.50539080）
