水力发电学报2025，Vol.44Issue(7)：47-54,8.DOI:10.11660/slfdxb.20250703
数值模拟地震动作用下拱坝动力响应不确定性
Uncertainty of dynamic responses of arch dams to ground motions based on numerical simulations
摘要
Abstract
Uncertainty in ground motions is a significant factor in the seismic safety evaluation of arch dams.The physical-based direct numerical modeling can consider different earthquake scenarios and generate site-specific earthquake motions,manifesting great application prospects in earthquake engineering.This study examines the scattering of nonlinear seismic responses of an arch dam to ground motions that are simulated numerically for three earthquake scenarios,focusing on the dynamic responses-including concrete damage,contraction joint opening,and displacement.Results show that the responses feature significant variability under different earthquake scenarios even if the rupture fault,magnitude,and stream peak ground acceleration at the dam site all remain consistent.The findings shed light on the scattering of dam responses and promote application of the ground motions generated by direct numerical simulations.关键词
拱坝/动力响应/地震动模拟Key words
arch dam/seismic response/ground motion simulation分类
建筑与水利引用本文复制引用
刘要来,张梦中,王进廷,王向超,余记远,鄢建华..数值模拟地震动作用下拱坝动力响应不确定性[J].水力发电学报,2025,44(7):47-54,8.基金项目
国家自然科学基金(52339007) （52339007）
中国华能集团有限公司科技项目(HNKJ22-H109) （HNKJ22-H109）
