摘要
安全厂房属于核电站抗震I类建筑物,其楼层反应谱计算是结构设计重要环节。在不同地震激励作用下,基于土-结构相互作用的影响,通过ACS SASSI软件计算得出结构楼层反应谱,并分别进行各楼层在不同阻尼比下X、Y、Z三方向反应谱曲线的对比分析。结果表明各层反应谱曲线峰值与地震激励输入成正相关;地震激励保持不变的条件下,反应谱峰值随阻尼比的增大而减小;随着厂房楼板中心节点高度的增加,反应谱和加速度响应峰值在水平向的放大效应明显增大。
Safety Building belong to seismic category I structures of nuclear power plant,and the calculation of floor response spectrum is important for structural design.Based on the effect of soil-structure interaction under different seismic excitation,the ACS SASSI software was used to calculate the floor response spectra.The response spectra curves of X,Y and Z direction which under different damping ratios were compared and analyzed.The results show that the peak value of response spectrum curve of each layer is positively correlated with seismic excitation input.Under the condition of constant seismic excitation,the peak value of response spectrum decreases with increasing damping ratio.With the increase of the height of the center node of the floor slab,the amplification effect of the response spectrum and acceleration response peak in the horizontal direction increases obviously.
作者
王彦超
苏永涛
刘景琛
WANG Yanchao;SU Yongtao;LIU Jingchen(Beijing Industrial Research and Design Institute of China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China;Hebei Branch of China Nuclear Power Engineering Co.,Ltd.,Shijiazhuang 050001,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期723-726,共4页
Building Structure
关键词
地震激励
阻尼比
楼层反应谱
峰值加速度
seismic excitation
damping ratio
floor response spectrum
peak acceleration
