某抽水蓄能电站上库面板坝极限抗震能力研究  

Study on Ultimate Seismic Capacity of CFRD for the Upper Reservoir of a Pumped Storage Power Station

作　　者：周奕琦 任华春 

机构地区：[1]上海市水利工程设计研究院有限公司,上海200333

出　　处：《水力发电》2015年第11期59-63,81,共6页Water Power

摘　　要：选取某抽水蓄能电站工程上水库面板坝,建立了坝体和库区的三维非线性有限元模型,在静动力有限元分析的基础上,采用可靠度动力安全系数法和地震永久变形极限状态法,研究了上库坝体的极限抗震能力。采用可靠度动力安全系数法,计算表明地震峰值加速度为760.6cm/s^2时下游坝坡已达到安全极限;采用地震永久变形极限状态法,计算表明地震峰值加速度为795.7 cm/s^2时坝体达到永久变形极限状态,由此确定上库坝体的极限抗震能力是当地震动峰值加速度760cm/s^2时。研究分析认为,该两种方法均可用以计算坝体的极限抗震能力。The three-dimensional nonlinear finite element model of dam and reservoir is established for the CFRD in upper reservoir of a pumped-storage power station. Based on static and dynamic finite element researches, the ultimate seismic response of CFRD is studied with the method of dynamic safety factor on reliability and the method of limit state of permanent deformation. According to the method of dynamic safety factor on reliability, the downstream slope will reach the limit state of safety when the earthquake peak acceleration reaches 760.6 cm/s2. According to the method of limit state of permanent deformation, the CFRD will reach the limit state of permanent deformation when the earthquake peak acceleration reaches 795.7 cm/s2. The ultimate seismic capacity of the CFRD is 760 cm/s2. The two methods can be used to calculate the ultimate seismic capacity of dam.

关 键 词：面板坝 非线性有限元法 坝坡稳定 永久变形 极限抗震能力 抽水蓄能电站 

分 类 号：TV314[水利工程—水工结构工程]