溪洛渡拱坝强震动响应记录处理分析  

Data Processing and Analysis of Strong Motion Response Records of Xiluodu Arch Dam

作　　者：许亮华[1,2] 高建勇 XU Lianghua;GAO Jianyong(China Institute of Water Resources and Hydropower Research,Engineering seismic research center,BeiJing 100048,China;E ngineering Research Center on Anti-Earthquake and Emergency Support Techniques of Hydraulic Projects,Ministry of Water Resources,BeiJing 100048,China)

机构地区：[1]中国水利水电科学研究院工程抗震研究中心,北京市100048 [2]水利部水工程抗震与应急支持工程技术研究中心,北京市100048

出　　处：《水电与抽水蓄能》2020年第5期30-37,共8页Hydropower and Pumped Storage

基　　金：国家重点研发专项“300m级特高坝抗震安全评价与控制关键技术研究”(2017YFC0404906);中国水利水电科学研究院基本科研业务费项目(EB0145B092017)。

摘　　要：大坝的强震动响应记录能够作为分析大坝工程实际抗震性能的定量数据,可以用来研究大坝工程结构的动态特性,目前实际大坝工程上的地震响应记录很少。2018年5月8日23时11分,溪洛渡大坝记录到一次距震源24km的3.8级地震响应,这是第一次在300m级特高拱坝上获得大坝地震响应记录,对研究拱坝在实际地震下的特性具有重大意义。对该记录进行了必要的校正处理,从时域、频域进行统计分析,得到溪洛渡拱坝地震响应的放大率、主频等动态特征。Strong motion response records of the dam can be used as the quantitative data to analyze the actual seismic performance of the dam project,which can be used to verify and recheck the seismic design of the dam project.At present,strong motion response record of the dam project is very few.At 23:11 on May 8,2018,some 3.8-magnitude earthquake responses,24km away from earthquake source,were recorded on Xiluodu arch dam,which was the first time to get strong motion response records obtained on a 300m high arch dam,which is of great significance to the study of the characteristics of arch dam under the actual earthquake.In this paper,the necessary correction data processing is carried out for the records,and the statistical analysis is carried out from the time domain and frequency domain to obtain the characteristics of strong motion response of Xiluodu arch dam,such as the dynamic amplification performance,the main frequency and so on.

关 键 词：地震响应记录 强震动安全监测 溪洛渡 特高拱坝 

分 类 号：TV698.23[水利工程—水利水电工程]