华南地震2026，Vol.46Issue(1)：77-87,11.DOI:10.13512/j.hndz.2026.01.09
高地震烈度区高沥青混凝土心墙砂砾石坝抗震工程措施有效性研究
Research on the Effectiveness of Seismic Engineering Measures for High Asphalt Concrete Core Sand-Gravel Dams in High Seismic Intensity Area
摘要
Abstract
This study focuses on a 100-meter-high asphalt concrete core sand-gravel dam located in a high seismic intensity zone in western China.By employing a three-dimensional nonlinear finite element method,the static and dynamic characteristics of the dam were analyzed.The computational results indicate that the absolute values of the dam's acceleration response under dynamic conditions without reinforcement are notably large,and the upstream dam slope faces instability risks under the checking seismic condition(645 gal).Based on these findings,geogrid reinforcement measures are proposed for the dam crest area.The effectiveness of these engineering measures and the ultimate seismic capacity of the reinforced dam are evaluated from perspectives including slope stability,seis-mic permanent deformation,and safety of the asphalt core.The results demonstrate that the geogrid reinforcement enhances the dam's seismic safety,with the ultimate seismic capacity reaching 0.70-0.75 g,showing a safety margin compared to the checking seismic intensity of 645 gal.关键词
高地震烈度/沥青混凝土心墙坝/有限元/抗震工程措施/极限抗震能力Key words
High seismic intensity/Asphalt concrete core wall dam/Finite element/Seismic engineering mea-sures/Ultimate seismic capacity分类
建筑与水利引用本文复制引用
张鸥,魏匡民..高地震烈度区高沥青混凝土心墙砂砾石坝抗震工程措施有效性研究[J].华南地震,2026,46(1):77-87,11.基金项目
国家重点研发计划项目(2024YFC3214900) （2024YFC3214900）
国家自然科学基金资助项目(U21A20158) （U21A20158）
陕西农林职业技术大学自然科学研究基金项目(ZKZ23-06)联合资助. （ZKZ23-06）
