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1、隔層桁架式立體停車結(jié)構(gòu)地震倒塌易損性分析本文檔格式為WORD,感謝你的閱讀。 1674?2974(2014)04?0010?06? 收稿日期：20130626? 基金項(xiàng)目：國(guó)家自然科學(xué)基金資助項(xiàng)目(51178176)；湖南省自然科學(xué)基金資助項(xiàng)目(13JJ6022)；教育部博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20120161110019) 作者簡(jiǎn)介：賀擁軍（1970-），男，湖南寧鄉(xiāng)人，湖南大學(xué)教授，博士生導(dǎo)師? 通訊聯(lián)系人，E-mail:hyj0087@163.com?? 摘要：采用基于增量動(dòng)力分析的易損性分析方法定量
2、地評(píng)估了隔層桁架式立體停車結(jié)構(gòu)的抗地震倒塌能力.分析了結(jié)構(gòu)在地震作用下的倒塌過(guò)程、倒塌機(jī)理，對(duì)結(jié)構(gòu)在單向和雙向地震作用下的抗地震倒塌能力進(jìn)行了對(duì)比，并比較了不同層數(shù)結(jié)構(gòu)的抗倒塌能力及安全儲(chǔ)備系數(shù).結(jié)果表明，該類型結(jié)構(gòu)具有良好的抗地震倒塌性能，底層是結(jié)構(gòu)抗倒塌薄弱層；隨結(jié)構(gòu)層數(shù)的增加倒塌概率增大、抗震能力減弱，但抗倒塌安全儲(chǔ)備系數(shù)并不是隨結(jié)構(gòu)層數(shù)的增加而不斷減小.建議針對(duì)該類型立體停車結(jié)構(gòu)的設(shè)計(jì)可以考慮突破現(xiàn)行建筑結(jié)構(gòu)規(guī)范高寬比的限值.? 關(guān)鍵詞：地震響應(yīng)；隔層桁架式立體停車結(jié)構(gòu)；地震易損性；抗地震倒塌能力；抗倒塌安全儲(chǔ)備系數(shù)
3、? TU248.3A SeismicCollapseFragilityAnalysisofthe3DParking? StructurewithAlternationStory?heightTruss? Lateral?load?resistingSystem HEYong?jun??1??，ZHOUXu?hong??1,2?，HEJia?qi?1? (1.CollegeofCivilEngineering,HunanUniv,Changsha,Hunan410082,China;? 2.CollegeofCiv
4、ilEngineering,ChongqingUniv,Chongqing400044,China) Abstract:Theseismiccollapse?resistantcapacityofthethree?dimensional(3D)parkingstructurewithalternationstory?heighttrusslateral?load?resistingsystemwasevaluatedbyIDA?basedseismicfragility?analysis?method.Thestructur
5、alcollapseprocessandmechanismunderearthquakewereanalyzed.Theseismiccollapse?resistantcapacitiesofthestructureunderone?directionalandbi?directionalearthquakeswerecompared.Andthecomparisonoftheseismiccollapse?resistantcapacitiesandcollapsemarginratiosofthestructureswi
6、thdifferentfloorswascarriedout.Theresulthasshownthattheseismiccollapse?resistantperformanceofthiskindof3Dparkingstructureisverygood,andthefirststoreyistheweakstorey.Thecollapseprobabilityincreaseswiththeincreaseofthestoreycountofthestructure,andthentheseismicperform
7、ancebecomesweak.However,thecollapsemarginratioofthestructuredoesnotalwaysdecreasewiththeincreaseofthestoreycountofthestructure.Itisrecommendedthattheprovisionoftheheight?widthratiointhecurrentdesigncodeofbuildingstructurecanbebrokeninthedesignofthiskindof3Dparkingst
8、ructure. Keywords:seismicresponse;3Dparkingstructurewithalternationstory?heighttrusslateral?load?resistingsystem;seismicfragility;seismic
