平面大尺度混凝土框架弹性侧移二维地震行波效应研究

Research on Bi-directional Elastic Seismic Responses of RC Large-scale Frame Lateral Displacement Considering Traveling-wave Effect

针对平面大尺度砼框架柱侧移地震行波效应研究缺乏的现状,本文借助建筑结构通用有限元软件Midas/Gen,采用时程分析方法,对受二维水平地震作用的平面大尺度混凝土框架柱弹性侧移进行了地震行波效应研究。采用非一致激励与一致激励下平面大尺度砼框架柱侧移比值β来描述地震行波效应影响。详细分析了结构平面尺度、地震波速等因素对β值的影响规律。给出了地震行波效应影响显著的结构平面区域以及β值随结构平面面积与波速平方之比值x变化关系的回归方程。根据这些回归方程,可确定应考虑地震行波效应影响的结构平面尺度、地震波速以及相应β值。

For the fact that the research on lateral displacement of planar large-scale concrete frames under seismic traveling wave is absent, using the general building structure finite element software Midas/Gen, the elastic lateral displacement of the planar large-scale concrete frames under the two dimensional seismic traveling wave is studied with time-history analysis method. Using the ratio β （ the column lateral displacement under non-uniform excitation divide the column lateral displacement under consistent excitation） , the effect of traveling wave on columns of planar large-scale concrete frames is described. The effect of the structure plane scale, the earthquake wave velocity, ere on β is analyzed indetail. The significant structure planar region of the traveling wave effect, and the regression equation between the β and the ratio x （the structure area divide wave velocity square） are put forward. According to the regression equation, the structure plane scale,earthquake wave velocity and the corresponding β value considering seismic traveling wave effect are determined.