首页 | 官方网站   微博 | 高级检索  
     

抗震设计中多遇地震的问题和讨论
引用本文:石树中,沈建文.抗震设计中多遇地震的问题和讨论[J].地震学报,2012,34(1):105-110.
作者姓名:石树中  沈建文
作者单位:1) 中国杭州310013浙江省地震局 2) 中国上海 200062 上海市地震局
基金项目:浙江省重点科研社会发展项目
摘    要:指出作为截面抗震验算标准的“小震”混淆了两种明显不同的概念:其一是对应于50年超越概率63%的地震动参数(以下简称“多遇小震”);其二是50年超越概率10%的地震动参数经过折算得到的参数(以下简称“折算小震”).上述混淆导致抗震设计中实际上执行着不同的标准.文中讨论了中、小地震动参数之间关系的复杂性,包括从地震危险性分...

关 键 词:多遇地震  折算小震  设计地震动参数  峰值加速度  反应谱特征周期

Discussion on the problem of frequent earthquakes in seismic design
Shi Shuzhong , Shen Jianwen.Discussion on the problem of frequent earthquakes in seismic design[J].Acta Seismologica Sinica,2012,34(1):105-110.
Authors:Shi Shuzhong  Shen Jianwen
Affiliation:1) Earthquake Administration of Zhejiang Province,Hangzhou 310013, China2) Earthquake Administration of Shanghai Municipality,Shanghai 200062, China
Abstract:"Small earthquakes" used as the standard of section seismic checking in seismic design confuses two significantly different concepts.One is the ground motion parameters corresponding to 63% exceeding probability in 50 years(hereinafter referred to as "frequent earthquakes"),and the other is the parameters received by reducing that corresponding to 10% exceeding probability in 50 years(hereinafter referred to as "reduction small earthquakes").Above confusion leads to a result that two different standards are actually followed in seismic design.Complexity of the relation of ground motion parameters corresponding to medium and small earthquakes is discussed,such as dispersion of peak acceleration,differences of consistent probability spectra on the bedrock obtained from seismic hazard analysis,and systematic differences of site-related response spectra between medium and small earthquakes by soil non-linear effect.Substitution frequent earthquakes for reduction small earthquakes in section seismic checking for major engineering projects may result in underestimation of response spectrum characteristic period Tg.Some suggestions are put forward.
Keywords:frequent earthquake  reduction small earthquake  design ground motion parameter  peak acceleration  characteristic period of response spectrum
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《地震学报》浏览原始摘要信息
点击此处可从《地震学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号