单边高强螺栓t型件连接节点试验研究及数值模拟

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1、第51卷增刊天津大学学报(自然科学与工程技术版)Vol.51Suppl.2018年7月JournalofTianjinUniversity(ScienceandTechnology)Jul.2018DOI:10.11784/tdxbz201804057单边高强螺栓T型件连接节点试验研究及数值模拟王燕，郏书朔，柴文娟(青岛理工大学土木工程学院，青岛266033)摘要：通过对单边高强螺栓(STUCK-BOM)T型件连接节点和常规高强螺栓T型件连接节点进行单向静力加载试验和数值模拟研究，研究了单边高强螺栓的破坏模式及抗拉极

2、限承载力，对比了单边高强螺栓与常规高强螺栓力学性能的差异，分析了T型件翼缘板尺寸效应对单边高强螺栓受力性能及T型件节点力学性能的影响．研究表明，单边高强螺栓破坏模式与常规高强螺栓不同，单边高强螺栓因其外套管分肢挤压弯折变形导致螺栓被拔出而破坏失效；单边高强螺栓的抗拉极限承载力与常规高强螺栓基本相同；相较于常规高强螺栓T型件节点，单边高强螺栓T型件节点的抗拉承载力和初始刚度与其基本相同，而塑性变形能力较弱；单边高强螺栓的边距和栓距对单边高强螺栓的抗拉极限承载力影响较小，栓距对T型件节点的抗拉承载力影响较小，而边距对T型

3、件节点的抗拉承载力有一定影响．关键词：T型件连接节点；单边高强螺栓；常规高强螺栓；抗拉极限承载力中图分类号：TU391文献标志码：A文章编号：0493-2137(2018)增-0078-08ExperimentalStudyandNumericalAnalysisofT-StubConnectionswithSingleDirectionHighStrengthBoltsWangYan，JiaShushuo，ChaiWenjuan(SchoolofCivilEngineering，QingdaoUniversityo

4、fTechnology，Qingdao266033，China)Abstract：ThroughtheunidirectionalstaticloadingtestandnumericalanalysisofT-stubconnectionswithsingledi-rectionhighstrengthbolts(STUCK-BOM)androutinehighstrengthbolts，thefailuremodelandultimatetensilebearingcapacityofsingledirectio

5、nhighstrengthboltwerestudied，thedifferenceofmechanicalpropertiesbetweensingledirectionhighstrengthboltandroutinehighstrengthboltwascompared，theeffectsofT-stubflangeplatesizeeffectonthemechanicalpropertiesofsingledirectionhighstrengthboltandT-stubconnectionswere

6、ana-lyzed．Resultsshowsthatthefailuremodelofsingledirectionhighstrengthboltisdifferentfromthatofroutinehighstrengthbolt．Thefailureofsingledirectionhighstrengthboltisduetothepulloutofthebolt，whichiscausedbytheextrusionbendingdeformationofitsoutersleeve．Theultimat

7、etensilebearingcapacityofsingledirectionhighstrengthboltandthatofroutinehighstrengthboltisbasicallythesame．ComparedwithT-stubconnectionswithrou-tinehighstrengthbolts，thetensilebearingcapacityandinitialstiffnessofT-stubconnectionswithsingledirectionhighstrengthb

8、oltsarebasicallythesame，buttheplasticdeformationcapacityisweaker．Boltspacingandboltedgedistancehavelittleinfluenceontheultimatetensilebearingcapacityofsingledirectionhighstr