新型钢管混凝土柱板节点偏压性能研究  

Investigation on the Eccentrically Compressive Property of the New-type Column-slab Joint

作　　者：刘付钧[1] 蔡健[1] 潘琴存 唐珉[1] 

机构地区：[1]华南理工大学土木工程系,广东广州510640 [2]广州城建开发设计院有限公司,广东广州510620

出　　处：《湖南大学学报（自然科学版）》2008年第5期6-10,共5页Journal of Hunan University:Natural Sciences

基　　金：广州市建设科技发展基金资助项目(200106);广州市城市建设开发集团有限公司科研基金资助项目;广州城建开发设计院有限公司科研基金资助项目

摘　　要：研究的新型钢管混凝土柱板节点,避开了以往传统节点的局限性,具有连接方便、施工简易、降低造价等优点.在对该节点的轴压研究的基础上,着重展开了对其偏心受压性能的试验研究.共设计了15个节点试件,进行了11个试件的偏压试验和4个试件的轴压对比试验.讨论了荷载偏心距、混凝土强度等级、环筋配筋率以及钢管柱横截面积等因素对该节点偏压承载力的影响,探讨了该节点偏心受压的受力机理和力学性能,并结合该节点轴压承载力计算公式和现行混凝土规范中的局压承载力公式提出了一套适合该节点偏压承载力计算的设计公式,为实际设计提供了定量的依据.The new-type column-slab joint presented can avoid the limitation of traditional joints, and has the advantage of transferring loads dependably, constructing conveniently and saving on the cost. Based on the research of the axial compressive property of the new-type column-slab joint, the eccentrically compressive property for similar joints was studied. Fifteen specimens have been designed and the comparison tests have been carried out among eleven specimens under eccentric compression and four specimens under axial compression. On the basis of the test results, the effects of load eccentricity, strength grades of concrete, steel ratio of ring stiffeners and section area of steel tubular on the joint bearing capacity under eccentric compression were discussed. The working mechanism and mechanical properties of the joint under eccentric compression were studied, and a set of design formula was provided to calculate the joint＇s bearing capacity under eccentric compression, providing quantitative basis for engineering design.

关 键 词：钢管混凝土 板柱节点 偏心受压 试验 承载力 

分 类 号：TU392.3[建筑科学—结构工程]