豎向地震動(dòng)特性的統(tǒng)計(jì)分析
發(fā)布時(shí)間:2018-05-04 15:55
本文選題:地震動(dòng) + 峰值 ; 參考:《地震工程與工程振動(dòng)》2014年S1期
【摘要】:依據(jù)171次地震中3 462組三分量地震記錄,對(duì)豎向地震動(dòng)的一些特性進(jìn)行了統(tǒng)計(jì)分析,結(jié)果表明:(1)在近場(chǎng)區(qū),豎向地震動(dòng)的影響較大,峰值較大而且往往首先出現(xiàn);(2)地面震動(dòng)強(qiáng)度越大,豎向地震動(dòng)的相對(duì)比值V/H1越大;(3)V/H1峰值比的總體平均值約為0.5,V/H1≤0.65的總體累積概率約為84.5%;(4)豎向反應(yīng)譜曲線下降段的衰減指數(shù)小于水平向;豎向反應(yīng)譜拐點(diǎn)周期要小于水平反應(yīng)譜,而且與場(chǎng)地條件關(guān)系不大。
[Abstract]:Based on the 3 462 group three component seismic records of 171 earthquakes, some characteristics of vertical ground motion are statistically analyzed. The results show that in the near field region, the vertical ground motion has a great influence on the vertical ground motion. The larger the peak value is and the more the ground vibration intensity is, The larger the relative ratio of vertical ground motion (V/H1) is, the larger the ratio of V / H _ 1 to V / H _ 1 is, the overall cumulative probability is about 0.5V / H _ 1 鈮,
本文編號(hào):1843627
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