基于KiK-net强震记录的水工建筑物反应谱研究  

Study on Response Spectrum of Hydraulic Structure Based on KiK-net Strong Earthquake Data

作　　者：刘健 李聪 韩勃 万志 刘锐 LIU Jian;LI Cong;HAN Bo;WAN Zhi;LIU Rui(School of Qilu Transportation,Shandong University,Jinan 250002,China;School of Civil Engineering,Shandong University,Jinan 250061,China)

机构地区：[1]山东大学齐鲁交通学院,山东济南250002 [2]山东大学土建与水利学院,山东济南250061

出　　处：《水电能源科学》2019年第10期68-71,共4页Water Resources and Power

基　　金：国家科技支撑计划(2015BAB07B05);国家自然科学基金项目(41172267,51579154);山东省自然科学基金项目(ZR2018QEE008)

摘　　要：鉴于一些规范中的设计反应谱法是经过简化的经验设计方法,未充分考虑地质、场地条件等影响,分析处理了遍布日本超过1400组KiK-net强震数据,分别按照中国水工建筑物抗震设计规范(DL5073-2000)和欧洲抗震规范(Eurocode 8)的场地分类方法进行分类,得到不同场地条件的平均反应谱曲线,对平均反应谱曲线进行标定,并与规范中的设计反应谱对比,提出设计反应谱修改优化的建议。结果表明,场地条件主要对反应谱的特征周期、平台段高度、下降段的下降速率有影响;随着场地由硬变软,平台段高度逐渐降低,这与水工建筑物抗震设计规范和Eurocode 8中的规定有所不同;在长周期段,自振周期大的结构在软弱场地上受到的地震作用更大,加速度反应也大。Some design response spectrum methods in the standard are simplified by experience design method without considering the influence of geology and site conditions.In this paper,we analyzed more than 1400 groups of KiK-net strong earthquake data in Japan,and classify the sites according to site classification methods of specifications for seismic design of hydraulic structures(DL5073-2000)and Eurocode 8 respectively.Then the average response spectrum curves of different site conditions were calculated and calibrated,followed by comparing with the design response spectrum in the standard.Finally,the modification suggestions were proposed to optimize the design response spectrum.The results show that the site conditions have an impact on the characteristic period of the response spectrum,the height of the platform and the decrease rate of the descending segment.The height of the platform decreases gradually as the site becomes soft,which is different from the provisions of specifications for seismic design of hydraulic structures and Eurocode 8.In the long cycle period,the structure with large natural vibration period is more affected by the earthquake on weak site,and the acceleration response is stronger.

关 键 词：KiK-net 反应谱 场地条件 场地反应 

分 类 号：TU318[建筑科学—结构工程]