資源描述：
《沌口長江公路大橋主橋設計.pdf》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在行業(yè)資料-天天文庫。
1、橋梁建設２０１７年第４７卷第４期（總第２４５期）BridgeConstruction，Vol．４７，No．４，２０１７（TotallyNo．２４５）１文章編號：１００３－４７２２（２０１７）０４－０００１－０６沌口長江公路大橋主橋設計１２１１１馮鵬程，丁仁軍，陳毅明，付坤，劉琪（１．中交第二公路勘察設計研究院有限公司，湖北武漢４３００５６；２．中交城市投資控股有限公司，廣東廣州５１００３２）摘要：沌口長江公路大橋是長江上首座雙向８車道高速公路特大橋，主橋采用（１００＋２７５＋７６０＋２７５＋１００）m的雙塔雙索面鋼箱梁斜拉橋。該橋為半飄浮體系，塔梁間采用彈性＋阻尼復合式減震裝置。主梁采用
2、PK斷面鋼箱梁，箱梁總寬４６m（含風嘴），鋼箱梁頂板與U肋采用雙面焊接。橋塔采用鉆石形結構，塔高２３３．７m，橋塔基礎采用整體式群樁基礎。全橋共２４０根斜拉索，采用空間雙索面扇形布置，索體采用１８６０MPa高強平行鋼絲。斜拉索梁端采用錨箱錨固，塔端采用鋼錨梁錨固。輔助墩采用實體墩，墩柱頂部設系梁形成框架結構，墩柱下采用整體式承臺＋直徑３m的大直徑樁基。過渡墩頂部設置較大尺寸的墩帽，墩柱下采用分離式矩形承臺＋直徑３m的大直徑樁基。關鍵詞：斜拉橋；半飄浮體系；PK斷面鋼箱梁；鉆石形橋塔；斜拉索；復合式阻尼器；橋梁設計中圖分類號：U４４８．２７；U４４２．５文獻標志碼：ADesignofMai
3、nBridgeofZhuankouChangjiangRiverHighwayBridge１２１１１FENGPengcheng，DINGRenjun，CHEN‐Yiming，F(xiàn)UKun‐，LIUQi‐（１．CCCCSecondHighwayConsultantsCo．，Ltd．，Wuhan４３００５６，China；２．CCCCUrbanInvestmentHoldingCo．，Ltd．，Guangzhou５１００３２，China）Abstract：TheZhuankouChangjiangRiverHighwayBridgeisthefirstbridgethatistocarrydua
4、l４‐laneexpresswaysovertheChangjiangRiver．Themainbridgeofthebridgeisasteelboxgirdercable‐stayedbridgewithdoublepylons，doublecableplanesandwithspanarrangement（１００＋２７５＋７６０＋２７５＋１００）m．Thebridgeisdesignedintothesemi‐floatingsystemandinbetweenthepylonsandmaingirder，theelastic＋dampingcompositedamperdevic
5、esarearranged．ThemaingirderisthePK（Pasco‐KennewickBridge）sectionsteelboxgirder，thetotalwidth（inclu‐dingthewindfairings）ofthegirderis４６mandthetopplateofthegirderandthestiffeningUribsareconnected，usingthetwo‐sidewelding．Thepylonsarethediamond‐shapeconcretestructures，theheightofthepylonsis２３３．７mandt
6、hefoundationsforthepylonsaretheintegralgrouppilefoundations．Therearetotally２４０staycablesforthewholebridge．Thecablesarearrangedinthespatialdoublecableplanesinthefanshapesandaremadeupofthe１８６０MPahigh‐strengthparal‐lelsteelwires．Atthemaingirder，thecablesareanchored，usingthesteelanchorboxeswhileatthe
7、pylons，thecablesareanchored，usingthesteelanchorbeams．Theauxiliarypiersarethesolidpiers．Atthetoppartsofthecolumnsofthepiers，thetiebeamsarearrangedtomakethecolumnsthefamestructuresandunderthecolumnsaretheintegralpilecaps
