考虑使用年限时建筑物抗震设防水平的调整

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英文篇名：Adjustment of Seismic-proof Level in Consideration of Service Life-span of Buildings 中文刊名：太原工业大学学报 英文刊名：Journal of Taiyuan University of Technology 作者：李星 ; 李世温 英文作者：Li Xing Li Shiwen (Department of Civil Engineering) 中文关键词：结构抗震 ; 抗震鉴定 ; 抗震加固 ; 超越概率 英文关键词：earthquake proof ; estimate of Seismic-proof capacity ; seismic reinforcement ; over-stepping probability 出版日期：1992-04-01 机构：太原工业大学土木工程系,太原工业大学土木工程系, 年：1992 期：01 出版单位：太原工业大学学报

摘要

本文从场地地震影响的概率讨论出发,分析了在(O,t)年时段内,各有效震源无地震,而在(t,t+△t)时段内,发生场地峰值加速度大于或等于给定位的地震的概率。文中用波松模型对不同时段的超越概率进行了计算,并用weibull模型进行了简化调整,得到如下结沦:若建筑物的使用年限△t不同,财在相同的场地峰值加速度下,得出的超越概率亦不同;若取相同的超越概率,则应按不同的△t调整其峰值加速度,从而采用不同的设防水平。
Proceeding from the discussion of the probability of field seismic inf- luence,this paper analyzed the probability of field peak acceleration being larger than or equivalent to the given value within the period(t,t+△t) and no earthquake happentning in the period(0,t)year.The over-stepping probabilities for different periods were calculated by Poission model and adjusted by Weibull model for simplification.It is concluded that,if the service life-span of building △t is different,the over-stepping probabil- ity is also different at the same field peak acceleration;the peak accel- eration should be adjusted for different△t and different seismic-proof le- vel should be Mooted if the over-stepping probability is the same.

引文

1 Kiureghian A,Ang A H-S.A Fault-Rupture Model for Seismic Analysis.BSSA,1977:67(4) :1173～1194
    2 Bullen K E.An Introdnction to the Theory of Seismology.Cambridge University Press,1953
    3 陆大(纟金).随机过程及其应用.北京:清华大学出版社,1986．