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ID:33546139
大小:2.74 MB
页数:8页
时间:2019-02-27
《农村住宅砌体结构地震破坏数值模拟研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第35卷第2期地震工程学报Vol.35No.22013年6月CHINAEARTHQUAKEENGINEERINGJOURNALJune,2013农村住宅砌体结构地震破坏数值模拟研究①马宏旺1,王兰民2,陈龙珠1,李庆松1(1.上海交通大学船建学院安全与防灾工程研究所,上海200240;2.中国地震局兰州地震研究所,甘肃兰州73000)摘要:国内震害调查表明我国农村房屋在地震中破坏严重,主要原因是农村自建房屋大都缺乏基本抗震措施。近年来有关部门针对农村房屋的抗震性能提出一些改进措施,但这些措施实际抗震效果如何,除了极少数通过模型试验验证
2、外,很少得到验证。本文建立了砌体结构非线性有限元分析模型,以一幢农宅为研究对象,通过地震时程反应来再现其在地震作用下的破坏状况。研究表明本文提出数值模型能够较好的模拟砌体结构在地震中破坏过程,发现结构抗震薄弱部位。通过对三种模型对比分析表明圈梁和构造柱可以有效提高砌体结构整体抗震性能,但对局部破坏影响不大,需要在以后抗震设计中加以考虑。关键词:自建农宅;砌体结构;时程分析;抗震措施中图分类号:TU311.3文献标志码:A文章编号:1000-0844(2013)02-0232-08DOI:10.3969/j.issn.1000-0844
3、.2013.02.0232NumericalSimulationofEarthquakeDamageinRuralMasonryBuildings1,WANGLan-min2,CHENLong-zhu1,LIQing-song1MAHong-wang(1.InstituteofStructuralEngineeringandDisasterReduction,ShanghaiJiaotongUniversity,Shanghai200240,China;2.LanzhouInstituteofSeismology,CEA,Lanzho
4、uGansu73000,China)Abstract:EarthquakeexperienceindicatesthatthebuildingsofthecountrysidehavesustainedmoreseriousdamageanddestructionthancitybuildingsduringrecentearthquakesinChina.Amainreasonisthatruralbuildingshavenotbeenstrictlydesignedandconstructedaccordingtocodes.T
5、heCodeforSeismicDesignofBuildingshasbeenunderdevelopmentforfiftyyearsinChina,butithasbeengivenfewchancestoguidebuildingconstructionatthecountryside'slowereconomiclevel.Ruralbuildingshavebeenconstructedbytheownersthemselvesandlackbasicearthquakeprovisions,causingruralbui
6、ldingstobeeasilydamagedduringearthquakes.Forthisreason,somemeasureshavebeenproposedinrecentyearsforimprovingtheseismicperformanceofruralbuildings.Butmostearthquakeguidelineshavenotbeenverifiedbybuildingmodelex-perimentsoractualearthquakeexperiences.Fortunately,asnumeric
7、alsimulationskillsdevelop,itisbecomingpossibletosimulatetheentireearthquakeresponseprocessforabuilding.Thisstudyproposedanumericaldynamicinelasticearthquakeresponsemodelforasingle-storyunrein-forcedmasonrybuilding,usingtheABAQUSprogram.Threelevelsofearthquakeprovisionwe
8、reconsidered:(1)theunreinforcedmasonrybuilding,withnoreinforcedconcrete(RC)tiecolumnsorRCtiebeams;(2)theunrein
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