超强地震下沥青混凝土面板堆石坝抗震稳定分析评价  

Evaluation 297-302.of Seismic Stability Analysis of Asphalt Concrete Face Rockfill Dam Under Super Strong Earthquake

作　　者：高东红 屈永倩 郑林娜 朱瑞恒 GAO Dong-hong;QU Yong-qian;ZHENG Lin-na;ZHU Rui-heng(Shanghai Investigation,Design and Research Institute Co.,Ltd.,Shanghai 200434,China;Department of Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]上海勘测设计研究院有限公司,上海200434 [2]大连理工大学水利工程系,辽宁大连116024

出　　处：《水电能源科学》2025年第2期128-131,共4页Water Resources and Power

基　　金：水利部重大科技项目(SKS-2022101)。

摘　　要：某拟建抽水蓄能电站位于我国西北强震地区,电站上水库大坝采用沥青混凝土面板堆石坝,由于工程地震烈度较高,采用常规的设计手段,上、下游坝坡抗滑稳定安全系数难以满足规范要求,需要对坝顶结构及上、下游坝坡采取针对性抗震设计。因此,提出在坝顶采用设置增模区、加筋及“U”型防浪墙的加固措施,并分别采用拟静力法、动力时程法对大坝上、下游坝坡及坝顶防浪墙在不同工况下进行了稳定分析。结果表明,采取加固措施后,大坝坝坡及防浪墙的稳定安全系数有了明显改善,大坝抗震安全性显著提高。研究成果及分析方法对强震区修建高土石坝具有借鉴意义。The proposed pumped storage power station is situated in the seismic region of northwest China.The per up-reservoir dam uses asphalt concrete face rockfill dam.Because of the high seismicity of the project,it is difficult to meet the specifications using conventional design methods.The roof structure and the anti-slip stabilization safety cients coeffi-of upstream and downstream of the dam slope require targeted seismic design.Plastication area,reinforcement,and"U"type wave protection wall reinforcement measures are proposed to set up at the top of the dam.The quasi-static method and dynamic time-history method are used to analyze the stability of the upper and lower dam slope and the crest of the dam under different working conditions.The results demonstrate that the reinforcement measures have greatly creased in-the stability and safety coefficient of the dam slope and the wave protection wall,improving the seismic safety of the dam.The research results and analysis methods are of reference significance for the construction of high earth-rock dams in strong earthquake areas.

关 键 词：沥青混凝土面板堆石坝 强震区 拟静力法 动力时程法 坝坡 防浪墙 

分 类 号：TV641.4[水利工程—水利水电工程]