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ID:32049039
大小:4.08 MB
页数:122页
时间:2019-01-31
《多种滞回模型下单自由度体系的弹塑性反应谱分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、浙江大学硕士学位论文2013types,naturalvibrationperiods,displacementductility,dampingratiosand尸-△effectcoefficientsaretakenintoaccount.Resultsindicatethatdampingratioandp△effectcoe伍cientallhaveobviouseffecton卢.∥producesmoreidealeffectthanRonelastic—plasticseismicforcecalculation.Inordertoinvestigatethe
2、curvatureductilityintheactualprojectsandclassifythesteelcross-sectionsoriented.thispaperusestheoreticalmethodstostudytheseismicperformanceofthesteelstructuresystemintheelastic.plasticstage.Push.overanalysisofcantilevermastandframewithANSYSwasmadetogettherelationbetweencurvatureductilityandd
3、isplacementductility.Comparewithdisplacementductility,thecurvatureductilitywillsuddenlyincreaseSOthatitisnotsuitablefortheuseofdesign.CurvatureductilityinthesameseismicforceiSgreaterthanthedisplacementductility.CurvatureductilityofcantilevermastiStheleast,followedbyframewithoutandwithunifor
4、mload.ThisPapel-alSOanalyzedtheseismicforcemodificationfactorRofdual1ateralforceresistingsystemcombinedwithelastic-perfectlyplastic(EPP)modelandmodifiedClough(MC)modelfordifferentsite,ductilityfactoranddegradationofstrength.neresultsarenormalizedusingtwocharacteristicperiodsandcomparedwitht
5、hoseofEPPandMCmodels.Resultsrevealthatforduallateralforceresistingsystem.RspectraaregreaterthanforEPP,slightlylargerforMCmodel.111einfluenceofdegradationincreaseswiththedegradationandcannotbeneglected.Keywords:seismicdesign;seismicforcemodificationfactor;hystereticmodels;P.△effect;elastic-p
6、lasticdynamicanalysis;ductilityfactor;baseshear;degradation;dynamicresponse;curvature;displacement;push-over;duallateralforceresistingsystem;twocharacteristicperiods.V卜致谢行文至此,我的研究生生涯行将结束,回想过去的两年半,心情相当复杂。虽然马上就要离开紫金港了,但是总觉得我的心会一直留在这里。同时有太多关心、帮助过我的人值得感谢,谨借这小小的一页文字表达我由衷的感激之情。首先我要感谢我的导师童根树教授,是老师
7、将我带入了结构抗震的领域。初见老师的时候,我就觉的老师是一个可爱的老小孩,永远在笑眯眯着,开始的紧张也不翼而飞。在接下去的学习生涯里,童老师不断的帮助我从开始的毫无头绪,到懵懵懂懂,再到渐入佳境。每个周二,周五,大家排着队向童老师请教问题的场景历历在日。我的每一篇论文都是他悉心指导、数次修改的结果,凝聚着老师的心血。童老师在学术上的严谨,生活中的乐观,给了我非常深刻的印象。童老师是一个真正做学问,希望为后来人留下真正贡献的人。这些可贵的品质将会影响我的一生。在此,谨对童老师表示我最真诚的谢意。感谢大师兄
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