雙曲拱橋加固拓寬.pdf

1、河海大學碩士學位論文雙曲拱橋加固拓寬姓名：李震穎申請學位級別：碩士專業(yè)：土木工程指導教師：施建勇20050101AbstractThetwo—waycurvedarchbridgewasoneofthemainbridgetypeofthecountyandvillageinourcountryform1960’sto1980’sIthasthefollowingadvantages，novelstructure，savingmater

2、ials，easytoconstruction，lowcost，etcSoitwasspreadandusedovernationintheconstructionofmediumandsmalibridgeBut，becauseofthelimitofconditions，thetwo—waycurvedarchbridgealsohasthedisadvantagesofthebadstructuralintegrityetcMea

3、nwhileithasrun30to40yearsanditexistsvariousweaknessesanddeficiencySoitdoesn’tmeettheneedsoftoday’shighspeedeconomicdevelopmentConsideringthistypeofbridgehasthepotentialitiestooverloadlikeotherarchbridgesitcanbecontinuedt

4、ousesafelybyreinforcingandrepairing，anditcanreachthehigher，designingstandardbyreinforcingandwideningThisarticlehasresearchedhowteachthepurposewhichimprovesthebearingcapacityofthebridgesbychangingthespandrelstructuresyste

5、mtolightenthesteadyloadandtoimprovethe’structurestateofstressThebackgroundofthisarticleisthereinforcingandwideningprojectofZoumagangBridge(thetwo—waycurvedarchbridge)inJiangxiProvinceThisarticleisbuiItonthestudyofthewhol

6、eprocesswhichtestandexaminethestructureofthebridge，checkupandanalyzetheavailablebearingvalue，evaluatethestateofbridge，studythereinforcing，improvingtheloadandwideningprogramme，analyzeandcalculatethereinforcingandwidenings

7、tructure，studythereinforcing，improvingtheloadandwideningstulIsandkeypointsofcarryingouttesttheeffectandevaluatestructureafterreinforcingandwideningAndthenreinforceandwidenthebridgewiththesefollowingmeasures—————’usingcar