广州西塔巨型斜交网格平面相贯节点试验研究（完整版）(文档可以直接使用，也可根据实际需要修改使用,可编辑欢迎下载）广州西塔巨型斜交网格平面相贯节点试验研究121221方小丹,韩小雷,韦宏,季静,黄超,唐嘉敏(1.华南理工大学建筑设计研究院,广东广州510640;2.华南理工大学亚热带建筑科学国家重点实验室,广东广州510640)摘要:广州西塔主塔楼高432m,结构形式采用钢管混凝土巨型斜交网格外筒和钢筋混凝土内筒构成的筒中筒结构。斜交网格外筒由不同角度的钢管混凝土柱斜向相贯而成,为了实现节点承载力大于构件承载力的强节点设计原则,提出了两种节点构造形式:加强板+衬板节点和法兰板节点。为了验证两种节点构造的合理性,了解节点实际受力的工作性状、破坏机理和承载能力,进行了8个比例为1∶515的节点模型试验,设计并制作了能承受20000kN的自平衡钢结构加载架,采用两个10000kN千斤顶对相贯节点的柱端施加轴向力。结果表明两种构造形式的节点均表现出了约束混凝土的特点,均可满足西塔主塔楼结构设计承载力的要求,具有较高的安全性。相对法兰板节点,加强板+衬板节点对核心混凝土约束作用较大,力学性能较好。关键词:超高层建筑;钢管混凝土;斜交网格;平面相贯节点;静力试验;受力性能中图分类号:TU973117TU31711文献标志码:AExperimentalstudyonplannarintersectingconnectionsusedinobliquelycrossingmegalatticeoftheGuangzhouWestTowerFANGXiaodan1,HANXiaolei2,WEIHong1,JIJing2,HUANGChao2,TANGJiamin1(1.ArchitecturalDesignandResearchInstitute,SouthChinaUniversityofTechnology,Guangzhou510640,China;2.StateKeyLaboratoryofSubtropicalBuildingScience,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:TheGuangzhouWestTowerisanultrahigh2risebuildingwithaheightof432m,withthestructuralpatternofareinforcedconcretecoretubeenclosedbyanouterlatticetubemadeofobliquelycrossingconcretefilledsteeltubular(CFST)columns.Toassurethatthecapacitiesofconnectionsexceedthoseofstructuralcomponents,twodetailsoftheconnectionswereproposedandstudied.Oneconnectiontypewasreinforcingplatewithliningboardandtheotherwasconnectionwithflangeplates.Eight1∶515scalemodelsweretestedusingaspeciallydesignedself2balancingequipmentwithtwo10000kNcapacityjacksandpinionrack,inordertoverifytherationalityofthedetailsandtoinvestigatetheperformance,capacityandfailuremechanism.Testresultsindicatethattheconnectionsexhibitthecharacteristicofconfinedconcrete.TheconnectionsarevalidatedtomeetthedesignrequirementoftheGuangzhouWestTower,withsufficientloadingcapacity.Comparedwiththeconnectionswithflangeplates,theconnectionswithreinforcingplateplusliningboardhavelargerconfiningeffectsonconcretecoreandtherebybettermechanicalbehaviors.Keywords:ultrahigh2risebuildin