我國混凝土結構抗震措施合理性分析.pdf

1、學校代號學號密級10532S03011028湖南大學碩士學位論文我國混凝土結構抗震措施合理性分析Y892445堂僮望道厶蛙名；型塵壁昱咂姓名壁監(jiān)整!』E堡生熬援量羞皇焦；丕王捏堂暄圭些名窶；結掏王捏迨塞握窯旦期12QQ生≥目12旦迨窒鳘整旦期12QQ生旦!』旦簽整委雖盒圭廑；崮空王熬握耋塞童墼耋釜鎏釜圣至簍耋蠢耋叁墼AbstractEarthquakedisasterisoneofthemostseriousdisasters，whic

2、hmayresultinheavycasualtiesandeconomiclossesSeismicdesignisimportantBasedonexperimentationsandanalysisaboutseismicfortificationmeasuresindomesticandoverseas，andbycomparingseismicdesignprovisionswithseismiccodesinNewZeala

3、nd，EuropeanCommunity，theUnitedStates，itisanalyzedtherationalityofseismicfortificationmeasuresofconcretestructureinChinaToguaranteethestabilityoftheframeinstrongearthquakemotion，andonthebasisofanalysisontheconceptof“Capac

4、ityDesign’’intheabovethreecountriesseismicdesignprovisions，itisadvisedthatthemomentamplificationcoefficientsatthebottomsectionsofcolumnsfortheframestructuresinsomeseismicintensitybeincreasedteducethepossibilityoftheframe

5、columnyieldingTakingtheabovethreecountriesseismiccodesasreferenceitisrecommendedthatitbeaddeddetailsofseismicdesignbyusingdiagonalshearreinforcementtosafeguardbeamsagainstslidingshearfailure，WhenthePositlveNegativeshearf

6、orcesarereverseandtheratioishJighTheductilityoftheframestructuresinhighintensityregionsinChinaislowThemainreasonisthattheten。gthofpotentialplastichingeregionsinbeamsisshortIt缸advisedthatthelengthofpotentialplastichingere

7、gionsforseismicgrade2and3beincreasedAnditisrecommendthatitbeaddedsomedetailsofseismicdesigninpotentialpositiveplasticregionsforframestructuresinintensity9Theminimumreinforcementratiosoftheframebeamandcolumnofseismicgrade

8、lgiveninChinesecodeisreasonableButthoseofseismicgrade2，3，4arelowItisrecommendedthatthoseofseismicgrade2，3and4beenhanced。Itisimportantforgoodductilityforconcretestructuresbyrestrictingtheaxialcompressionratiosofcolumns，wh

9、ichmaybeincreasedbyincreasedtheratiosofhoopsandbyusingcontinuouscompoundspiralreinforcementcolumns，KeyWords：Structuralseismicdesign；Codifiedseismicforce—ductilitycriteria；Capacitydesign；Seismicfortificationmeasures；stron