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ID:33153075
大小:20.84 MB
页数:129页
时间:2019-02-21
《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》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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