“释能法”加固桁式组合拱桥的原理、计算模式及计算方法研究

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1、重庆交通大学硕士学位论文:释能法”加固桁式组合拱桥的原理、计算模式及计算方法研究姓名：李宪伟申请学位级别：硕士专业：桥梁与隧道工程指导教师：蒙云20100401ABSTRACTAstheYuancunbridgewasreinforcedsuccessfullybytheEnergy-releasedMethodreinforcementtechnologyintheendof2008,itbringsarayofhopeforthedangerouscompositetrussarchbridge.B

2、ecausethecompositetrussarchbridgewasreinforcedfirstlybytheEnergy-releasedMethodreinforcementtechnology,wefindsomeaspectsofthetechnologyneedbein-depthconsummated,itwillbeaccumulatedexperiencesforthereinforcementofothercompositetrussarchbridge.Inthispaper,

3、proceedingfromthetheoryoftheEnergy-releasedMethodreinforcementtechnology,theauthorresearchesthecomputingmodelandcalculationalmethodofthecompositetrussarchbridgereinforcedbyEnergy-releasedMethod.Proceedingfromtheshortageoftheoriginalcalculationalmethodand

4、usingthefiniteelementanalysissoftware,theauthorseeksanewoverallsimulativecalculationalmethodforthecompositetrussarchbridgereinforcedbytheEnergy-releasedMethod.Inthispaper,throughstudingthefiniteelementthoughtandtheEnergy-releasedMethodreinforcementtheory

5、,theauthorgivesthemethodtoimitatearchfeetconnectionusingtheflexibleconnectionelementinthecompositetrussarchbridgereinforcedbytheEnergy-releasedMethod,thenachievesthecomputingmodelandcalculationalmethodofthecompositetrussarchbridgereinforcedbytheEnergy-re

6、leasedMethod.TheauthorcalculatestheYuancunbridgereinforcedbytheEnergy-releasedMethodwiththeoverallsimulativecalculationusingthefiniteelementanalysissoftware.Bycomparisonandassessmentofcalculatedresults,provingthatthemethodofoverallsimulativecalculationfo

7、rthecompositetrussarchbridgereinforcedbytheEnergy-releasedMethodusingthefiniteelementanalysissoftwareisfeasible,.Andcomparedwiththepreviousmethod,theaccuracyandsimplicityofthecalculationareimproved.Throughcomparisonandanalysisoftheloadtestdatabeforeandaf

8、terYuancunbridge'sreinforcement,itprovesthattheYuancunbridge'sperformancesaregreatlyimprovedafterreinforcementbytheEnergy-releasedMethod.Lastly,theauthormakesafewpointsneedtoresearch.KEYWORDS:compositetrussarchbridge;energ