基于不同破坏指数的建筑物震害预测不确定性分析

英文篇名：Study on Uncertainty of Earthquake Damage Prediction Based on RC Structural Damage Indices
中文刊名：中国地震
英文刊名：Earthquake Research in China
作者：赵凤新 ; 任志林 ; 张郁山
英文作者：Zhao Fengxin1)Ren Zhilin2)Zhang Yushan1)1)China Earthquake Disaster Prevention Center ; Beijing 100029 ; China2)Earthquake Administration of Beijing Municipality ; Beijing 100080 ; China
中文关键词：震害预测 ; 结构地震破坏指数 ; 钢筋混凝土结构 ; 不确定性
英文关键词：Damage index RC structures Earthquake damage prediction Uncertainty
出版日期：2008-12-15
机构：中国地震灾害防御中心;北京市地震局震害防御与地震工程研究所;
年：2008
期：04
出版单位：中国地震

摘要

结构地震破坏指数是将结构地震破坏程度进行量化的指标,其应用领域十分广泛。本文针对建筑结构震害预测工作,选取了7种典型的破坏指数,分别以5层和17层钢筋混凝土结构为模型,计算了在给定地震动作用下,结构模型对应于每个破坏指数的结构震害等级。计算结果表明:由于选取的破坏指数以及相应的破坏等级划分不同,建筑物的震害预测结果会存在较大的差异,尤其在接近设防烈度的地震作用下,建筑物的震害预测结果存在很大的不确定性。
The earthquake damage indices of structure,which are quantifying indicators of the degree of structural damage caused by earthquake,have found applications in wide fields.Aiming at the practice of damage prediction of buildings,seven typical damage indices were selected firstly in this paper.And then a five-story and a seventeen-story reinforced concrete structures were modeled,whose damage grades corresponding to each selected damage index were calculated under the input of given earthquake ground motions.The results show that due to the difference of the pre-selected damage index as well as the scaling of damage grade corresponding to each index,there exits a relatively great variance in the results of seismic damage prediction of building,especially in the case of seismic excitation whose intensity is close to the design intensity of building,where the damage prediction results of building present large uncertainty.

引文

高小旺、沈聚敏,1993,“大震”作用下钢筋混凝土房屋变形能力的抗震可靠度分析,土木工程学报,26(3),3～12。
    刘伯权、白绍良等,1997,抗震结构的等效延性破坏准则及其子结构试验验证,地震工程与工程振动,17(3),77～83。
    牛荻涛、任利杰,1996,改进的钢筋混凝土结构双参数地震破坏模型,地震工程与工程振动,16(4),44～54。
    欧进萍、何政、吴斌等,1999,钢筋混凝土结构基于地震损伤性能的设计,地震工程与工程振动,19(1),21～30。
    王光远,1999,工程结构与系统抗震优化设计的实用方法,北京:中国建筑工业出版社。
    吴波,1993,主余震作用下钢筋混凝土机结构的损伤试验与分析,哈尔滨建筑大学博士学位论文,哈尔滨。
    尹之潜,1995,地震灾害及损失预测方法,北京:地震出版社。
    GB50011-2001,2001,建筑抗震设计规范,北京:中国建筑工业出版社。
    GBJ11-1989,1989,建筑抗震设计规范,北京:中国建筑工业出版社。
    Park YJ,Ang A H-S,1985a,Mechanistic seismic damage model for reinforced concrete buildings,Journal of Structure Engineering,ASCE,111(4),722～739.
    Park YJ,Ang A H-S,Wen Y K,1985b,Seismic damage analysis of reinforced concrete buildings,Journal of Structure Engineering,ASCE,111(4),740～756.
    Reinhorn A M,Kunnath S K,Valles-Mattox R,1996,IDARC2D Version4.0:Users manual,NewYork:State Universityof NewYorkat Buffalo.