对穿螺栓多腔钢管混凝土抗震墙与钢梁刚接节点设计方法  

Design of the Rigid Connection Between Multi-Cavity Concrete-Filled Wall with Pass-Through Bolts to Steel Beams

作　　者：华玉武 童根树[2] 江舸 Yuwu Hua;Genshu Tong;Ge Jiang(Zhejiang Yuegong Steel Structures Co.,Ltd.,Shaoxing 312000,China;Institute of High-Performance Structures,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江越宫钢结构有限公司,浙江绍兴312000 [2]浙江大学高性能结构研究所,杭州310058

出　　处：《钢结构（中英文）》2023年第7期29-35,共7页Steel Construction（Chinese & English）

摘　　要：研究了一种改进的钢管混凝土抗震墙与钢梁的刚性连接节点的设计方法,该节点由与抗震墙厚度等宽(与抗震墙齐平)的端板+与端板和钢管混凝土抗震墙壁板焊接的4块侧板构成,钢梁上下翼缘与端板全熔透焊接,腹板与端板采用高强螺栓连接。采用板件机构分析方法,分两种情况推导了端板在钢梁截面塑性弯矩作用下所需厚度的计算公式,一种是端板外伸高度足够,一种是端板外伸高度等于楼板厚度。同时计算公式中考虑了侧板本身塑性弯矩的影响。对“强节点、弱杆件”的验算提出了设计公式,该公式等效于将钢管端板刚接节点的节点系数增大1.2倍以考虑翼缘内纵向正应力不均匀分布的影响。最后对墙内的节点域抗剪强度验算给出了公式。This paper reported a study on a new-type of the rigid connection between concrete-filled walls and steel beam,in which an endplate of the same width as the wall thickness is welded on the edge of the CFT-wall,plus 4 side-plates welded onto the faces of the CFT-walls and the end-plate.Steel beams are welded to the end-plate using groove welds for the flange and fillet weld and high-strength bolts for the web.Plate plastic mechanism analysis method is carried out to determine the required thickness of the end-plate under the plastic moment of steel beam.Two cases are considered for the end plate,one is when the end plate has enough extended height,the other is the extended height equal to the slab thickness.The effect of the plastic moment of the side-plates has been considered in the proposed formulas.An extra joint factor 1.2 is introduced to include the effect of non-uniform distribution of longitudinal stress along the width of the beam flange to meet the demand of the seismic design demand of weak-beam-strong-connection.Finally shear strength check of the panel zone in the CFT-wall is introduced for the CFT-wall-steel beam connection.

关 键 词：钢管混凝土墙 刚性连接 钢梁 节点域 塑性分析 

分 类 号：TU352.11[建筑科学—结构工程]