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1、橋梁建設(shè)2012年第42卷第3期(總第213期)94BridgeConstruction,Vo1.42,No.3,2012(TotallyNo.213)文章編號:1003—4722(2012)03—0094—07太原市機場路祥云橋橋塔設(shè)計王文斌,王清泉,李春凱,戴利民,徐利平(1.同濟大學(xué)土木工程學(xué)院,上海200092;2.同濟大學(xué)建筑設(shè)計研究院(集團)有限公司,上海200092)摘要:太原市機場路祥云橋主橋為獨塔混合梁斜拉橋,橋塔由3根塔柱組成,空間呈火炬造型,在橋面以上為鋼塔柱,在橋面以下為混凝土結(jié)構(gòu)。鋼塔柱內(nèi)部加勁肋
2、按照半剛性加勁肋的原則設(shè)計;塔柱聯(lián)結(jié)系采用剛接方案,3根塔柱之間設(shè)置20道空間水平聯(lián)結(jié)系;在鋼塔柱與混凝土塔柱間設(shè)置鋼一混凝土結(jié)合段(高7.05m),主要傳力構(gòu)件為PBL剪力鍵;塔頂鋼塔帽將3根塔柱頂端固結(jié),其下段為連接塔柱的重要受力構(gòu)件,上段為裝飾構(gòu)造;斜拉索在中塔柱內(nèi)采用雙錨箱的方式錨固,在邊塔柱內(nèi)采用錨梁的方式錨固;斜拉索向塔柱圓弧外側(cè)拉伸錨固;3根塔柱采用整體式基礎(chǔ)方案,承臺間設(shè)置系梁。關(guān)鍵詞:斜拉橋;橋塔;鋼塔柱;結(jié)合段;聯(lián)結(jié)系;橋梁設(shè)計中圖分類號:U448.27;U442.5文獻標(biāo)志碼:ADesignofPyl
3、onofXiangyunBridgeonAirportRoad,TaiyuanCityWANGWen—bin’,WANGQing—quan。,LIChun—kai,DAILi—min,XULi—ping(1.CollegeofCivilEngineering,TongjiUniversity,Shanghai200092,China;2.ArchitecturalDesign&ResearchInstitute(Group)Co.,Ltd.,TongjiUniversity,Shanghai200092,China)Abs
4、tract:ThemainbridgeoftheXiangyunBridgeonAirportRoad,TaiyuanCityisasinglepylonhybridgirdercable—stayedbridge.Thepylonofthebridgeiscomposedof3pyloncolumnsandspatiallyitisconfiguratedlikeatorch.ThepartofthepylonabovethedeckisofthesteelcolumnsandthatunderthedeckiSofth
5、econcretestructure.Thestiffenersinsidethesteelcol—umnsaredesignedontheprincipleofsemi—rigidstiffenersandthetiesystemsofthecolumnsareconnectedbywayofrigidfixity.Amongthe3columns,totally2Ospatialhorizontaltiesaresetandinbetweenthesteelcolumnsandconcretestructure,ast
6、eelandconcretejointsection(7.05mhigh)isset,inwhichtheprincipalloadtransferringcomponentsarethePBLshearstuds.The3pyloncolumnsarerigidlyfixedattheirtopsbyasteelcap,ofwhichthelowerpartistheimpor—tantloadbearingcomponentforfixingofthecolumnswhiletheupperpartisthedecor
7、ativestruc—ture.Thestaycablesareanchoredinthemiddlepyloncolumnbythedoublesteelanchorboxesandinthesidecolumnsbytheanchorbeamsandthecablesaretensionedoutwardstheroundarcofthecolumnsandanchored.The3columnsareallsupportedonanintegralfoundation,thepilecapsofwhicharecon
8、nectedbythetiebeams.Keywords:cable—stayedbridge;pylon;steelpyloncolumn;jointsection;tiesystem;bridgedesign1工程概況汾河?xùn)|岸的太茅公路,是太原市機場路跨越汾河的太原市祥云橋西起汾河西岸的新晉祠路、東