芦山7.0级地震砌体结构的震害特征

英文篇名：Seismic damage to masonry structures in M7.0 Lushan earthquake
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：曲哲 ; 钟江荣 ; 孙景江
英文作者：QU Zhe ; ZHONG Jiangrong ; SUN Jingjiang(Key Laboratory of Earthquake Engineering and Engineering Vibration ; Institute of Engineering Mechanics ; China Earthquake Administration ; Sanhe 065201 ; China)
中文关键词：芦山地震 ; 非约束砌体结构 ; 约束砌体结构 ; 破坏比
英文关键词：Lushan earthquake ; unconfined masonry structure ; confined masonry structure ; damage rate
出版日期：2013-06-15
机构：中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室;
年：2013
期：03
出版单位：地震工程与工程振动

摘要

四川芦山7.0级强烈地震影响区域内有大量的砌体结构房屋,既有未采取任何抗震构造措施的非约束砌体结构,也有设置了圈梁和构造柱的约束砌体结构。文中首先简要讨论了本次地震强震动特性,表明其高频成分丰富,反应谱中低频部分衰减较快,是刚性结构和柔性结构地震破坏表现差别较大的原因之一;继而论文重点以现场震害调查资料为基础,总结了不同烈度区、不同类型砌体结构的震害特征;高烈度区不同类型砌体结构的震害程度和破坏比对比表明,约束砌体结构的抗震性能明显优于非约束砌体结构。
Masonry structure,either unconfined or confined,is one of the major structural systems in the area affected by the M7.0 Lushan earthquake in 2013.The characteristics of strong ground motions obtained during the earthquake are briefly discussed to show that the ground motions are rich in short-period contents,which may lead to heavy damage to stiff structures like masonry houses.Based on the materials collected during the emergency building inspection immediately after the earthquake,damage patterns of various types of masonry structures in areas with different intensities during the earthquake are summarized.Comparisons of damage rates befween unconfined and confined masonry structures show that the latter demonstrates much better seismic performance than the former.

引文

[1]中国地震局.四川省芦山“4.20”7.0级强烈地震烈度图[EB/OL],http:www.cea.gov.CEA.Earthquake intensity map of M7.0‘4.20’Lushan earthquake in Sichuan[EB/OL],http:www.cea.gor.(in Chinese)
    [2]国家强震动台网中心.四川雅安芦山县7.0级地震(第五报),2013年4月23日.CSMNC Fifth report for M7.0 Lushan earthquake in Sichuan.April 23,2013(in Chinese)
    [3]GB50011-2011建筑抗震设计规范[S].GB50011-2001Code for Seismic Design of Buildings[S].(in Chinese)
    [4]GB/T24335-2009.建(构)筑物地震破坏等级划分规范[S].GB/T 24335-2009 Classification of Earthquake Damage to Buildings and Special Structures[S].(in Chinese)
    [5]GB/T17742-2008中国地震烈度表[S].GB/T 17742-2008 The Chinese Seismic Intensity Scale[S].(in Chinese)