發(fā)布時(shí)間：2018-07-26 21:04

【摘要】：將選擇的746條各國強(qiáng)震記錄按照我國建筑抗震設(shè)計(jì)規(guī)范中的規(guī)定進(jìn)行場地分類.按照最新的識(shí)別近場強(qiáng)速度脈沖地震記錄的定量方法,將選擇的地震記錄劃分為中遠(yuǎn)地震、近震及近場強(qiáng)脈沖地震記錄.利用這些強(qiáng)震記錄,統(tǒng)計(jì)得到了近場強(qiáng)脈沖地震對應(yīng)Ⅰ,Ⅱ,Ⅲ,Ⅳ四類場地的等延性位移比譜、等強(qiáng)度位移比譜的計(jì)算公式,并由此研究了場地條件及各種地震動(dòng)參數(shù)對等延性位移比譜、等強(qiáng)度位移比譜的影響.結(jié)果表明:近場地震動(dòng)的脈沖作用在中短周期段[0.3s,5s]對等延性位移比譜的影響較大,近場地震動(dòng)的脈沖作用在中短周期段[0.5s,3s]對等強(qiáng)度位移比譜的影響較大且部分可達(dá)80%以上,場地條件對影響周期段的范圍有重要影響;峰值地面速度與峰值地面加速度比(PGV/PGA)是影響近場地震動(dòng)位移比譜最大的參數(shù).
[Abstract]:The selected 746 records of strong earthquakes in different countries are classified according to the provisions of the code for seismic design of buildings in China. According to the latest quantitative method to identify the near field velocity pulse seismic records, the selected seismic records are divided into Cosco earthquake, near earthquake and near field intensity pulse seismic records. Using these strong earthquake records, the formulas for calculating the isoductive displacement ratio spectrum and equal intensity displacement ratio spectrum of near-field pulsed earthquakes corresponding to four types of sites, I. e., 鈪，

本文編號(hào)：2147283