資源描述：
《壩陵河大橋鋼桁加勁梁合龍關(guān)鍵技術(shù).pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、橋梁建設(shè)2012年第42卷第1期(總第211期)96BridgeConstruction，Vo1．42，No．1，2012(TotallyNo．211)文章編號(hào)：1003-4722(2012)01—0096—06壩陵河大橋鋼桁加勁梁合龍關(guān)鍵技術(shù)龔玉華，梁森，陶路。(1．貴州高速公路開(kāi)發(fā)總公司，貴州貴陽(yáng)550004；2．武漢市城建安全管理站，湖北武漢430015；3．中鐵大橋局集團(tuán)武漢橋科院有限公司，湖北武漢430034)摘要：為保證壩陵河大橋鋼桁加勁梁架設(shè)的順利進(jìn)行，針對(duì)合龍過(guò)程中可能出現(xiàn)的豎向、橫向、扭轉(zhuǎn)偏差及跨中合龍段合龍口長(zhǎng)度偏小，上
2、、下弦合龍口長(zhǎng)度偏差不同等難點(diǎn)，對(duì)合龍口特征、參數(shù)敏感性、各種偏差調(diào)整措施及合龍方案進(jìn)行了研究。研究結(jié)果表明，采用在兩橋塔處對(duì)梁端進(jìn)行牽引措施可較好解決合龍口縱向長(zhǎng)度不配匹的難點(diǎn)，保證鋼桁梁合龍桿件安裝順利實(shí)施；采用合龍段前端吊索暫不安裝并輔以臨時(shí)吊索的措施，可有效解決上、下弦合龍口偏差問(wèn)題，同時(shí)也可作為鋼桁梁橫向、扭轉(zhuǎn)偏差的調(diào)整措施。關(guān)鍵詞：懸索橋；鋼桁梁；合龍；措施；參數(shù)中圖分類號(hào)：U448．25；U445．4文獻(xiàn)標(biāo)志碼：AKeyTechniquesforClosureofStiffeningSteelTrussGirderofBali
3、ngRiverBridgeG0NGYu-hua，LJANGSen，TA0Lu。(1．GuizhouExpresswayDevelopmentCorporation，Guiyang550004；China；2．AdministrationofUrbanConstructionSafety，WuhanCity，Wuhan430015，China；3．BridgeScienceResearchInstituteLtd．，ChinaRailwayMajorBridgeEngineeringGroup，Wuhan430034；China)Abstra
4、ct：ToensurethattheerectionofthestiffeningsteeltrussgirderofBalingRiverBridgecouldbecarriedoutsmoothly．thecharacteristicsoftheclosuregapsofthegirder，there—latedparametersensitivity，variousadjustmentmeasuresandclosureschemeswerestudiedinthelightofthevertical，lateralandtorsio
5、naldeviationsthatwouldpossiblyoccurintheprocessoftheclosureandalsotheproblemsthatthelengthoftheclosuregapatthemidspanwasslightlyshortandthelengthdeviationsoftheclosuregapsattheupperandlowerchordsweredifferent．Theresultsofthestudyshowthatthemeasureofhaulingthegirderendsatth
6、etWOtowerscanwellresolvetheproblemthatthelongitudinallengthoftheclosuregapsdoesnotmatchandcanguaranteethesmoothinstallationoftheclosuremembersofthegirder．Themeasureoftempora—rilynotinstallingthepermanentsuspendersinthefrontendsoftheclosuresectionsandaidingtheclosurewiththe
7、temporarysuspenderscaneffectivelyresolvetheproblemofthedeviationsoftheclosuregapsattheupperandlowerchordsandatthesametime，canserveforadjustmentofthelateralandtorsionaldeviationsofthegirderaswel1．Keywords：suspensionbridge；steeltrussgirder；closure；measure；parameter1前言于懸索橋鋼桁加
8、勁梁合龍段施工及相關(guān)控制經(jīng)驗(yàn)較大跨度鋼桁加勁梁懸索橋多見(jiàn)于日本，國(guó)內(nèi)關(guān)少h。目前，國(guó)外常見(jiàn)懸索橋鋼桁加勁梁的合龍收稿日期：2011—09—01作者簡(jiǎn)介：龔玉華，高級(jí)工程師，E—m
