s形曲线桥梁地震模拟振动台试验分析

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1、西安建筑科技大学硕士学位论文(5)Throughthedetailedanalysistothedynamiccharacteristics,accelerationtimehistorycurve,displacementtimehistorycurveandstraintimehistorycurveofthemodelbridge,theseismicperformanceoftheS-shapecurvedbridgeisresearched.(6)Throughanalyzingthefunctio

2、nofthestopperandanti-collisionfacilities,findingthatweshouldpaymoreattentiontopassiveenergydissipationmeasuresandmethodsaswellasavoidsimplyaddingstrengthtoresistearthquakeforcurvedbridgeseismic.Anti-drop-beamdeviceofthecurvedbridgeshouldnotonlyhavesufficien

3、tdeformationandenergydissipationcapacity,butalsoshouldhaveenoughstiffness,strictlypreventingexcessivedisplacementofthebeamleadtothepiereccentricforceistoolargeandunstable.(7)Theconcept"beamfloatingseismicsystem"isproposedandappliedtothemodelbridgetest.Byana

4、lyzingthestraindataofpiersreinforcedwefoundthatthemodelbridgereinforcedstillnotyieldunderstrongearthquake,whichshowsthat"beamfloatingseismicsystem"isverybeneficialtoimprovetheseismicperformanceandseismiccapacityofthecurvedbridge.Keywords:S-shapedcurvebridge

5、;multi-pointexcitation;shakingtabletest;seismicperformance;floatingearthquakeresistancesystemPaperType:BasicresearchFoundationitems:ThepaperissupportedbytheNaturalScienceFoundationProjectofChina(ProjectID:51078306):“Thecatastrophlicmodelandmultipointmultidi

6、rectiondynamictransfertheoryofhigh-curvedlongbridge”;theBasicResearchProgramfundedprojectsofNaturalScienceinShaanxiprovince(ProjectID:2013JQ7007):“LargecomplexdynamicmodelandsuccessoroverpassbeamstructureboundarysimulationSystem”;thespecializedResearchFundf

7、orDoctoralProgramofhigherEducationofChina(ProjectID:20106120110004):“Theseismiccatastrophicmodelandbehaviortransfertheoryofhigh-curvedlongbridge”.万方数据西安建筑科技大学硕士学位论文目录1绪论........................................................................................

8、...............................11.1地震灾害简介................................................................................................11.2国内外桥梁震害现象及分类研究..............................................