Seismic fragility for high CFRDs based on deformation and damage index through incremental dynamic analysis
Seismic fragility for high CFRDs based on deformation and damage index through incremental dynamic analysis
复制标题
通过增量动力分析基于变形和损伤指数的高 CFRD 地震易损性
DOI：
10.1016/j.soildyn.2017.11.017
复制
发表时间：
2018
影响因子：
4
通讯作者：
Zou Degao
中科院分区：
文献类型：
--
作者：
Pang Rui;Xu Bin;Kong Xianjing;Zou Degao
将基于增量动力分析（IDA）的地震易损性分析方法推广应用于高面板堆石坝的抗震性能评价。在定义面板损伤指标的基础上，将永久变形和面板损伤指标作为大坝损伤指标，分别采用修正的堆石体广义塑性模型和面板塑性损伤模型。通过紫坪铺面板堆石坝的损伤指标和前人研究成果的验证，表明该分级标准是合理的。确定了不同地震烈度下各DM的易损性曲线和概率。易损性分析结果表明，该方法可为预测高面板堆石坝的地震破坏和损失提供有力的科学依据。
In this paper, a seismic fragility analysis method based on incremental dynamic analysis (IDA) is extended to evaluate the seismic performance of high concrete face rockfill dams (CFRDs). Permanent deformation and face-slab damage index using a modified generalized plasticity model for rockfills and a plastic-damage model for face-slabs are considered to be dam damage measures (DMs) after defining a new face-slab damage index. The verification to damage index through the Zipingpu CFRD and previous research indicates that the grading standards are reasonable. Fragility curves and the probabilities are determined for each DM under different earthquake intensities. The results of fragility analysis demonstrate that this method can provide a strong scientific basis for predicting the earthquake destruction and loss of high CFRDs.