高心墙堆石坝的动力响应和抗震分析  

Dynamic Response and Seismic Analysis of High Core Rockfill Dams

作　　者：路玲 LU Ling(North Henan Water Conservancy Administration,Xinxiang 453002,China)

机构地区：[1]河南省豫北水利工程管理局,河南新乡453002

出　　处：《河南水利与南水北调》2022年第5期77-78,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：以某高心墙堆石坝为研究对象,基于数值模拟为基础,构建的高心墙堆石坝的动力响应和抗震能力分析,通过控制变量,分析高心墙堆石坝的动力反应与变形位移,并由此建立数值模拟模型。通过分析模型的具体情况,分析比较加筋与未加筋的能力情况分析。结果表明:通过计算公式得出有限元数值模拟计算参数,建立大坝模型。大坝体内的应力与应变与地震波的大小呈正比,并且大坝的永久变形也越明显。进行了加固措施后,对大坝进行了内部加筋,大坝的稳定性得到了明显提升,并且安全系数也随加速度峰值的增大而变小的更加缓慢,为工程应用提供参考。Taking a high core rockfill dam as the research object and based on the numerical simulation, the dynamic response and seismic capacity of the high core rockfill dam are analyzed. The dynamic response and deformation displacement of the high core rockfill dam are analyzed through the control variables, and the numerical simulation model is established. Through the analysis of the specifics situation of the model, analysis and comparison of reinforced and unreinforced capacity. The results show that the finite element numerical simulation calculation parameters are obtained through the calculation equations and the dam model is established.The stress and strain in the dam body are proportional to the magnitude of the seismic wave, and the permanent deformation of the dam is more obvious. After the reinforcement measures are carried out, the internal reinforcement of the dam is carried out, the stability of the dam is significantly improved, and the safety factor decreases more slowly with the increase of the acceleration peak,which provides reference for engineering application.

关 键 词：动力响应 地震荷载 数值模拟 加筋效果 

分 类 号：TV3[水利工程—水工结构工程]