Seismic performance investigation of high CFRDs subjected to mainshock-aftershock sequences

Seismic performance investigation of high CFRDs subjected to mainshock-aftershock sequences
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主震-余震序列下高CFRD的抗震性能研究

DOI:
10.1016/j.soildyn.2018.09.049
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发表时间:
2019
影响因子:
4
通讯作者:
Kong Xianjing
Kong Xianjing
中科院分区:
工程技术2区
文献类型:
--
作者:
Pang Rui;Xu Bin;Zhang Xu;Zhou Yang;Kong Xianjing

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选取24个实测主震-余震地震序列,采用位移、剪应变和损伤指数3种损伤指标,对一座200 m高面板堆石坝在主震-余震地震序列作用下的抗震性能进行了弹塑性分析。同时还得到了面板堆石坝在单次主震和单次余震作用下的动力响应,以供比较。显然,面板堆石坝在经历余震时会产生额外的损伤或破坏,这在相应的抗震设计规范中是不可忽视的。
In this paper, 24 as-recorded mainshock-aftershock seismic sequences are selected to analyse the seismic performance of a 200-m-high concrete face rockfill dam (CFRD) subjected to mainshock-aftershock seismic sequences by a series of elastic-plastic analyses, based on three damage measures (DMs), displacement, shear strain and damage index (DI). The dynamic responses of CFRD subjected to single mainshocks and single aftershocks are also obtained for comparison. Evidently, CFRD will experience additional damage or destruction while experiencing an aftershock, which cannot be ignored in the corresponding seismic design codes.
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