地震动参数对土坡地震响应的影响权重研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (6) : 225-230.

论文

地震动参数对土坡地震响应的影响权重研究

张江伟1，李小军2，齐剑峰1，王玉石2，贺秋梅2

作者信息 +

Effect of influence weights of ground motion parameters on soil slope seismic responses

ZHANG Jiangwei 1, LI Xiaojun 2, QI Jianfeng 1, WANG Yushi2, HE Qiumei2

Author information +

文章历史 +

摘要

影响边坡地震稳定性的地震动参数有多种。研究地震动参数与土坡地震响应的相关性对边坡工程的抗震设计和灾后应急救援有重要的理论和现实意义。本文基于有限元数值模拟和数学方法，选取了100条具有不同地震动峰值加速度（PGA）、地震动峰值速度（PGV）、阿里亚斯强度、绝对累积速度（CAV）、持时和特征周期的地震动记录，分析了不同特性地震动作用下土坡的动力响应规律，并探讨了地震动各参数与土坡地震动力响应的相关性。研究结果表明，地震动各参数对坡体变形位移的影响权重从高到低分别为PGV、PGA、阿里亚斯强度、CAV、特征周期和持时，对坡体加速度的影响权重从高到低分别为特征周期、持时、PGV、阿里亚斯强度、CAV和PGA。

Abstract

There are vorious kinds of ground motion parameters influencing the stability of soil slopes under earthquake.The correlation of ground motion parameters with slope dynamic responses and the new methods for slope seismic stability evaluation have great theoretical and practical significance in the seismic design of slopes and the postdisaster emergency rescue. In the paper, based on the finite element numerical simulation and the mathematical method, 100 ground motion records with different parameters of peak ground acceleration (PGA), peak ground velocity (PGV), Arias intensity(AI), cumulative absolute velocity (CAV), duration and characteristic periods were selected. The dynamic responses of the slope under each ground motion were simulated, and the correlation between ground motion parameters and slope dynamic responses was discussed. The results reveal that the order of the influence weights of ground motion parameters on slope displacements from highest to lowest successively is PGV, PGA, Arias intensity, CAV, characteristic periods and duration, and that on slope output accelerations from highest to lowest successively is characteristic periods, duration, PGV, Arias intensity, CAV and PGA.

导出引用

张江伟1，李小军2，齐剑峰1，王玉石2，贺秋梅2. 地震动参数对土坡地震响应的影响权重研究[J]. 振动与冲击, 2018, 37(6): 225-230

ZHANG Jiangwei 1, LI Xiaojun 2, QI Jianfeng 1, WANG Yushi2, HE Qiumei2. Effect of influence weights of ground motion parameters on soil slope seismic responses[J]. Journal of Vibration and Shock, 2018, 37(6): 225-230

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