本文選題：近斷層脈沖型地震作用　切入點(diǎn)：近場影響系數(shù)　出處：《建筑結(jié)構(gòu)》2016年S1期

【摘要】：基礎(chǔ)隔震結(jié)構(gòu)的近斷層脈沖型地震作用與常規(guī)地震作用相比,結(jié)構(gòu)的最大絕對加速度、隔震層的最大位移均有較大增加。通過算例分析,采用時(shí)程分析法對近斷層脈沖型地震作用的隔震結(jié)構(gòu)計(jì)算時(shí),罕遇地震下的峰值加速度的取值決定了隔震支座的選擇。通過對《建筑抗震設(shè)計(jì)規(guī)范》(GB 50011—2010)12章及附錄L簡化計(jì)算方法的分析,三種罕遇地震峰值加速度取值對應(yīng)三種隔震支座布置的計(jì)算結(jié)果,8度區(qū)多層框架結(jié)構(gòu),建議采用插值法進(jìn)行罕遇地震下隔震層計(jì)算,隔震層以上結(jié)構(gòu)的水平地震影響系數(shù)最大值,抗規(guī)公式(12.2.5)應(yīng)乘以近場影響系數(shù)。
[Abstract]:Compared with conventional earthquake, the maximum absolute acceleration and the maximum displacement of isolation layer of the base isolated structure are greatly increased.Through the example analysis, the peak acceleration value under rare earthquake determines the choice of isolation support when calculating the isolated structure acting on near fault pulse type earthquake by using time history analysis method.Based on the analysis of the simplified calculation method of chapter 12 of GB50011-2010 / 12 and appendix L, the calculation results of three kinds of seismic peak acceleration corresponding to three kinds of seismic isolation support arrangement are analyzed, and the calculation results of multi-story frame structure in 8 degree zone are given.It is suggested that the method of interpolation should be used to calculate the isolation layer under rare earthquakes. The maximum horizontal seismic influence coefficient of the structure above the isolated layer and the formula of resistance to earthquake should be multiplied by the near-field influence coefficient.
【作者單位】： 云南省安泰建設(shè)工程施工圖設(shè)計(jì)文件審查中心;昆明理工大學(xué)建筑工程學(xué)院;云南震安減震科技股份有限公司;
【分類號】：TU352.12
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本文編號：1705824