資源描述:
《農(nóng)村住宅砌體結(jié)構(gòu)地震破壞數(shù)值模擬研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在教育資源-天天文庫(kù)。
1、第35卷第2期地震工程學(xué)報(bào)Vol.35No.22013年6月CHINAEARTHQUAKEENGINEERINGJOURNALJune,2013農(nóng)村住宅砌體結(jié)構(gòu)地震破壞數(shù)值模擬研究①馬宏旺1,王蘭民2,陳龍珠1,李慶松1(1.上海交通大學(xué)船建學(xué)院安全與防災(zāi)工程研究所,上海200240;2.中國(guó)地震局蘭州地震研究所,甘肅蘭州73000)摘要:國(guó)內(nèi)震害調(diào)查表明我國(guó)農(nóng)村房屋在地震中破壞嚴(yán)重,主要原因是農(nóng)村自建房屋大都缺乏基本抗震措施。近年來有關(guān)部門針對(duì)農(nóng)村房屋的抗震性能提出一些改進(jìn)措施,但這些措施實(shí)際抗震效果如何,除了極少數(shù)通過模型試驗(yàn)驗(yàn)證
2、外,很少得到驗(yàn)證。本文建立了砌體結(jié)構(gòu)非線性有限元分析模型,以一幢農(nóng)宅為研究對(duì)象,通過地震時(shí)程反應(yīng)來再現(xiàn)其在地震作用下的破壞狀況。研究表明本文提出數(shù)值模型能夠較好的模擬砌體結(jié)構(gòu)在地震中破壞過程,發(fā)現(xiàn)結(jié)構(gòu)抗震薄弱部位。通過對(duì)三種模型對(duì)比分析表明圈梁和構(gòu)造柱可以有效提高砌體結(jié)構(gòu)整體抗震性能,但對(duì)局部破壞影響不大,需要在以后抗震設(shè)計(jì)中加以考慮。關(guān)鍵詞:自建農(nóng)宅;砌體結(jié)構(gòu);時(shí)程分析;抗震措施中圖分類號(hào):TU311.3文獻(xiàn)標(biāo)志碼:A文章編號(hào):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