武汉西四环汉江特大桥总体设计.pdf

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1、桥梁建设２０１７年第４７卷第６期（总第２４７期）８４BridgeConstruction，Vol．４７，No．６，２０１７（TotallyNo．２４７）文章编号：１００３－４７２２（２０１７）０６－００８４－０５武汉西四环汉江特大桥总体设计舒江，师少辉，朱玉（中交第二公路勘察设计研究院有限公司，湖北武汉４３００５６）摘要：湖北省武汉市西四环线汉江特大桥主桥为（７７＋１００＋３６０＋１００＋７７）m双塔双索面半飘浮体系预应力混凝土斜拉桥，引桥为３×６５m预应力混凝土现浇连续箱梁桥。主桥桥塔采用H形结构，

2、两桥塔塔高分别为１３０．１m和１２６．１m；主梁采用双边箱PK断面，整幅宽４３．６m，按全预应力构件设计；斜拉索采用热镀锌钢绞线，按双索面扇形布置，每个塔柱布置２８对斜拉索，全桥共２２４根；索塔锚固采用改进的紧凑型钢锚梁，并在索导管出口附近设预应力钢棒进行斜拉索锚下局部防裂。分别采用MIDASCivil和ANSYS对主桥进行总体和局部计算，结果表明结构各项指标均满足规范要求。关键词：斜拉桥；预应力混凝土结构；H形桥塔；双边箱PK断面；宽幅桥面；热镀锌钢绞线；紧凑型钢锚梁；有限元法中图分类号：U４４８．

3、２７；U４４２．５文献标志码：AOverallDesignofXisihuanHanjiangRiverBridgeinWuhanSHUJiang，SHIShaohui，ZHUYu-（CCCCSecondHighwayConsultantsCo．，Ltd．，Wuhan４３００５６，China）Abstract：ThemainbridgeoftheXisihuan（WestFourthRingRoad）HanjiangRiverBridgeinWuhanCity，HubeiProvinceisasemi

4、-floatingsystemprestressedconcretecable-stayedbridgewithdoublepylons，doublecableplanesandwithspanarrangement（７７＋１００＋３６０＋１００＋７７）mandtheapproachbridgesofthebridgearethecast-in-situprestressedconcretecontinuousboxgirderbridgeswithspanarrangement３×６５m．Thetw

5、opylonsofthemainbridgetaketheHshapeandtheheightofthepylonsisrespectively１３０．１mand１２６．１m．ThecrosssectionofthemaingirderisthePK（Pasco-KennewickBridge）sectionofdoubleedgeboxes．Thewholewidthofthegirderis４３．６mandthegirderisdesignedaccordingtothefullprestress

6、edcomponent．Thestaycablesaremadeupofthehot-dipgalvanizedsteelstrandsandarearrangedinfanshapeindoublecableplanes．Oneachcolumnofapylon，２８pairsofthecablesarearrangedandonthewholebridge，totally２２４cablesareprovided．Forthestaycableanchorageinapylon，theim-prov

7、edcompactsteelanchorbeamsareappliedandnearbytheexitsofthecableductsinthean-chorage，theprestressingbarsarearrangedforthepurposeofpreventingthelocalcrackingunderthecableanchors．TheMIDASCivilandANSYSarerespectivelyusedtocarryouttheglobalandlocalcalculation

8、ofthemainbridgeandtheresultsofthecalculationindicatethatthevariousindi-cesofthestructurecansatisfytherelevantrequirementsinthecodes．Keywords：cable-stayedbridge；prestressedconcretestructure；H-shapepylon；PKsectionofdoubleedgeboxes；