斜拉橋成橋恒載初始索力的確定和施工中張拉索力設(shè)計(jì).pdf

1、同濟(jì)大學(xué)碩士學(xué)位論文斜拉橋成橋恒載初始索力的確定和施工中張拉索力設(shè)計(jì)姓名：白植舟申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：陳德偉2002.5.1AbstractInthispapertwoissuesduringthedesignanderectionofcable‘stayedbridges，namelythedeterminationofinitialcableforcesunderdeadloadandthetensions

2、chemeofcablesduringerection，areinvestigatedBoththeissuesareprovidedsolutionmethodsrespectively1nthedesigningofcablestayedbridges，todeterminetheinitialcableforcesunderdeadloadisahighlyimportanttaskThereexistalotofsolution

3、methodsthatcarlso[retheproblemeffectivelyInthepaper，thegeneticalgorithmisemployedThemostdifferencebetweenthemethodsforwardedinthepaperfromtheoldonesisthatitisnotessentialtodecidetheinitialstatusofinnerforceorstructuraldi

4、splacementInthegeneticalgorithmmethod，onlyaobjectionfunctionisneededThelefttaskistogettheextremumsolutionoftheobjectionfunctionorthevariablevaluescorrespondingtotheextremumsolutionAccordingtothemeritmentionedabove，theore

5、ticallythemethodCallbeappliedtogettheinitialcableforcesthatcableadtominimalchangesofsometargetsbegottenbycreepandshrinkARertheinitialcableforcesaredetermined，anothertoughtaskishowtealizetheinitialobjectStatusthrougherect

6、ionWithaimingatthedemeritofoldsolutionmethodsinwhichthestresssafetyisnotsufficientlytakenintoaccount，theproblemisdividedintothreepartsinthepaperTheyaredeterminationofnewlyformedcableforceswhensystemtransition，determinati

7、onofnewlyformedcableforcesandcastschemeduringaerectionstageandadjustingschemeofcableforcesatthelaststageoferectionInthepaperthefronttwoitemsarestudiedcarefullyInthesolutionmethod，firstlythesafetytensionrangesofthenewlyfo

8、rmedcableforcesaredetermined，thenthevaluesofnewlyformedcableforcesisadoptedinthesafetyrangesbycomplyingwithsomerulerThetensionschemeprovidedCanassurethestresssafetyduringtheerectionofcablestayedbridgesKeywords：theCable—s