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1、第36卷第6期2015年6月014建筑結(jié)構(gòu)學(xué)報(bào)JournalofBuildingStructuresVol.36No.6June2015文章編號(hào):1000-6869(2015)06-0108-09DOI:10．14006/j．jzjgxb．2015．06．014上海中心大廈結(jié)構(gòu)長期豎向變形分析12232王曉蓓，高振鋒，伍小平，呂佳，夏飛(1．同濟(jì)大學(xué)建筑工程系，上海200092;2．上海建工集團(tuán)股份有限公司，上海200080;3．華東建筑設(shè)計(jì)研究院有限公司，上海200002)摘要:超高層建筑施工周期長，結(jié)構(gòu)的豎向變形累積是設(shè)計(jì)和施工中主要考慮因素之一，豎向構(gòu)件的壓縮變形通常由彈性、收縮和徐變
2、變形引起。以上海中心大廈為工程背景，分析了CEB-FIP、ACI及PCA中建議的混凝土材料時(shí)變特性預(yù)測(cè)模型及適用性。根據(jù)實(shí)際施工進(jìn)度建立上海中心大廈結(jié)構(gòu)有限元分析模型，得到采用三種預(yù)測(cè)模型計(jì)算的施工全過程及結(jié)構(gòu)封頂后的長期豎向變形，分析各預(yù)測(cè)模型計(jì)算的變形特點(diǎn)及其差別。根據(jù)實(shí)測(cè)溫差計(jì)算溫度變形，將豎向變形有限元分析結(jié)果與長期監(jiān)測(cè)值進(jìn)行對(duì)比。結(jié)果表明，采用CEB建議的材料預(yù)測(cè)模型，在考慮溫度作用的情況下其豎向變形計(jì)算值與實(shí)測(cè)值大小、趨勢(shì)及溫度升降趨勢(shì)均較為吻合，說明季節(jié)溫差對(duì)豎向累積變形的影響較為明顯。關(guān)鍵詞:超高層建筑;時(shí)變特性預(yù)測(cè)模型;監(jiān)測(cè)值;季節(jié)溫差;豎向變形中圖分類號(hào):TU973．14
3、文獻(xiàn)標(biāo)志碼:AAnalysisoflong-termverticaldeformationoftheShanghaiTower12232WANGXiaobei，GAOZhenfeng，WUXiaoping，LVJia，XIAFei(1．DepartmentofStructureEngineering，TongjiUniversity，Shanghai200092，China;2．ShanghaiConstructionGroup，Shanghai200080，China;3．EastChinaArchitecturalDesignandＲesearchInstitute，Shanghai20
4、0002，China)Abstract:Theconstructioncycleofsuperhigh-risebuildingislong，andtheeffectofverticalcumulativedeformationisamajorconsiderationinthedesignandconstructionofthestructure．Thedeformationofverticalmembersusuallyoccursduetoelastic，shrinkageandcreepdeformations．Thesuperhigh-risebuildingtheShanghai
5、Towerwasselectedtoinvestigatetheverticaldeformation．Thetime-dependentpropertypredictionmodelofconcretematerialsuggestedbyCEB-FIP，ACIandPCAanditsfeasibilitywereanalyzed．TheFEAmodeloftheShanghaiTowerwasestablishedaccordingtotheactualconstructionprogress．Thelong-termverticaldeformationsduringtheconstr
6、uctionandafterthecompletionofstructurecalculatedbythreepredictionmodelswereacquiredandthefeaturesanddifferenceoflong-termdeformationscalculatedbyvariousmodelswereanalyzed．Calculatingthetemperaturedeformationsaccordingtothemeasuredtemperature，andcomparingthecalculatedresultsofverticaldeformationswit
7、hthelong-termmonitoredvalues，itshowsthat，usingthepredictingmodelsuggestedbyCEBandconsideringthetemperatureeffect，thecalculatedvaluesofverticaldeformationsareingoodagreementwiththemonitoredvaluesandtemperatu
