套筒式全螺栓装配式节点滞回性能及转动模型研究

打开文本图片集

关键词：装配式节点；全螺栓连接；滞回试验；抗震性能；破坏机理 中图分类号：TU375.4；TU352.11 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202308040

Hysteresis performance and rotation modelling of sleeve-type fully-bolted prefabricated joints

WANG Zhenshan1，ZHU Jinpeng¹，TIAN Penggang²，LU Junlong1，TIAN Jianbo1

（1.State Key Laboratory ofEco-hydraulics in Northwest Arid Region of China，Xi'an University of Technology，

Xi'an 7lOo48，China; 2.Shaanxi Construction Engineering Holding Group Science and Technology Innovation of Future City Co.，LTD.，Xi'an 71200O，China）

Abstract：InordertoacieverapidconstructionandreliableconectioofprecastRCframes，asleve-typefullboltedjointispro posed.Theendsof theprefabricatedcomponentsarereinforcedwithasteelleve-concretecombination.Highstrengthboltsare pre-builtinthslevearea，andtheprecastcomponentsrerapidlyinstalldusingaconnectionplate.Atotaloffourtestspeimens weredesignedfordiferentthicknessesofconnectingcoverplates.Thehorizontalhysteresis teststudyobtainedthedamagemode， load-displacementhysteresiscurve，ultimatebearingcapacity，ductilityandenergydissipatiocapacityoftis typeofjoint.There sults show that the new joint has a 43% higher ultimate load， 70% higher initial stiffness and nearly 5O% higher ductility than the cast-in-placejoint，andtheequivalentviscousdampigcoeficientisincreasedbyabouttwoimes，whichshowsbeterseisicper formance.Strananalysisrevealsthatthecoverplateatthejointsshowsa“stress increase”，buttheefectontheoverallperfor manceisnotapparent.Astheticknessoftheconnetionplateincreases，thesqueeingefectoftheseveontheconcreteinceas es.Therefore，aconectionstifessratioof1.6ismorereasonable.Finally，basedonthetestresults，atrifoldmomenttuingan gle model is established，and the calculated results agree with the test values.

Keywords： prefabricated joints;fullbolt connection;hysteretic test;seismic performance;destructionmechanism

装配式建筑作为中国未来城镇发展的重要方向已成为行业内的共识[1]，合理的连接形式是影响装配式建筑推广应用的关键因素。（剩余12846字）