建筑物高低层地震反应差异研究

摘要

建筑物高低层的地震反应是有差异的.本文对一栋20层钢筋混凝土框架结构进行了平面地震反应分析,并对一栋在汶川大地震中带有器物反应现象的4层钢筋混凝土框架结构进行了三维地震反应分析,得到了各楼层的位移、速度、加速度时程曲线及反应谱曲线.通过对计算结果的分析验证了“随楼层增高,人的感觉和器物的反应越强烈”的现象,初步分析了产生这一现象的原因.%The seismic responses of building are different in different stories. The plane seismic response of a reinforced concrete frame structure building with 20 stories and the 3D seismic response of a same structure building with 4 stories, which had objects responses record in rooms during the Wenchuan great earthquake in 2008, are calculated. By analyzing, the seismic responses of two buildings, the time history curves of displacement, velocity, acceleration and acceleration response spectra are obtained. The results prove the phenomenon of "on the higher storey of building, the seismic responses of human and objects are stronger".