超大跨径自锚式悬索桥几何非线性行为理论与试验性能-研究

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1、thesameconditiom，andsidespansacl'OSSbridgetoweronsymmetryofcablegripsmidspandisplacementmagnitudeisalwaysgreaterthansidespans；thesidespanmaincablecumulativeverticaldisplacementandverticaldisplacementanddeformationaccumulatedvalueisbasicallysanleandmainca

2、bleaCrOSSverticalcumulativedisplacementandlongitudinaldisplacementanddeformationvaluesaccumulatedfrombridgetowertospan，thedifferencebecomeslarger；conversionarchitecturehassignificanteffectsonverticalcumulativedisplacementofmaincableandtolongitudinalcumul

3、ativedisplacementisweak，andinmid-span1／4mostsignificant,frommid—spantospanacross114，theimpactgraduallyincreased；CROSSfrom1／4tobridgetowerplace，graduallyweakened，almostnoeffectonsidespan．3、Basedonexperimentaldata,toanalyzetypicalhangingcabletensionvariati

4、oninconstructionbycomparingactualconversionvalueoftheoreticalandexperimentalbridgetheoreticalcalculations．叻eresultsshowedthat：inconstruction，thesidespanandslingsforcevariationisdifferent；duetosideacrossslingtensionobtainedthroughcableforce，withoutaffecti

5、ngadjacenttensioningrope，slingsofotherlongerforcebecomeslargersling,andslingsystempowerconversiondoesnotchangeaftercompletionofprocess；theexperiencedacrossslingtensionduetocableforcesobtainedbyadjacentslingtensioneffectissmall；theimpactoflongerothersling

6、forcegmIiuaJlybecomeslarger；systemconversioniscompletedslingforcechangedlittleprocess。4．Basedontestdata,thecomparisonofactualbridgetheoryconversionvalueandtestbridgetheorycalculationvalue，analyzedtypicalslinginratio，thecableforcegrowthunderdifferentworki

7、ngconditionsandfinalcableforceresultsshowthat：theslingsidespansuspenderseventuallycableforcemainlycomesfromotherslingtensiongeneratedbycumulativeeffectofgrowth；theslingeventuallycableforcemainlycomesfromadjacentslingotherslingtensiongeneratedbyslingcumul

8、ativegrowtheffect．5．Effectofstructuralsystemchangeontypicalcableforceisanalyzedbasedontestdataandcomparisonbetweentheoreticalbridgecalculatedvalueandexperimentalbridgecalculatedvalue．Theresultsshowthat：theslingforceincreas