方钢管再生混凝土柱钢筋承插式连接板锚固性能研究  

Anchorage Behavior of Steel Plate with Anchoring Rebars in Recycled-concrete-filled Square Steel Tube

作　　者：蔡立鳌 莫志军 刘锋[3] CAI Li'ao;MO Zhijun;LIU Feng(Guangzhou Construction Industry Research Institute Co.,Ltd.Guangzhou 510663,China;Guangzhou ConstructionCo.,Ltd.Guangzhou 510060,China;Guangdong University of Technology Guangzhou 510006,China)

机构地区：[1]广州建筑产业研究院有限公司,广州510663 [2]广州建筑股份有限公司,广州510060 [3]广东工业大学,广州510006

出　　处：《广东土木与建筑》2025年第1期92-96,共5页Guangdong Architecture Civil Engineering

基　　金：广州市建筑集团有限公司装配式建筑专项资金(2019-KJ002)。

摘　　要：以钢筋直径、钢筋数量和承插式连接板厚度为主要参数,通过对7个方钢管再生混凝土柱钢筋承插式连接板试件进行静力拉拔试验,研究了方钢管再生混凝土柱承插式连接板的锚固性能。研究结果表明:拉拔试件破坏模式分为钢筋剪切破坏和钢板剪切破坏两大类,且方钢管对受压区膨胀混凝土有一定约束作用;钢筋直径、钢筋数量都对拉拔试件的承载力有显著影响。在一定范围内增大钢筋直径和钢筋数量均可提高端板连接件的拉拔承载能力,其中增加钢筋数量对承载力的提高最为显著;根据《钢-混凝土组合桥梁设计规范:GB 50917—2013》对拉拔试件的极限承载力进行了预测,发现规范方法偏保守。This study focused on the anchorage behavior the steel plates with anchoring rebars that is embedded in recycled-concrete-filled square steel tubes.A total of seven specimens were tested under static pullout loads and the key parameters were the diameter of rebars,the number of rebars,and the thickness of the steel plates.Two failure modes,namely shear failure of rebars and bearing failure of plates,were observed for the specimens.It was found that the square steel tube could provide confinement on the concrete and the dimeter and number of rebars could significantly affect the pullout capacity.The capacity was increased by increasing the diameter and number of rebars,among which increasing the rebar number is most efficient way to enhance the anchorage strength.The ultimate capacity of the tested specimens was predicted by the"Code for design of steel and concrete composite bridges"and the predictions were found to be conservative.

关 键 词：方钢管再生混凝土 钢筋承插式连接板 锚固性能 拉拔试验 破坏模式 

分 类 号：TU398.9[建筑科学—结构工程]