盖板加强型狗骨式节点力学性能的探讨  

Mechanical property discussion on cover plate reinforced dog-bone joints

作　　者：李启明 王冬娜[2] Li Qiming Wang Dongna(China MCC17 group Co. ,Ltd. ,Maanshan 243000 ,Anhui Qingdao Technological University Qindao college , Qingdao 266000, Shandong)

机构地区：[1]中国十七冶集团有限公司,安徽马鞍山243000 [2]青岛理工大学琴岛学院,山东青岛266000

出　　处：《工程建设》2017年第2期14-19,共6页Engineering Construction

摘　　要：研究的节点类型在对钢节点梁翼缘削弱的同时,又利用盖板加强梁端,使节点在实现塑性铰外移的同时仍能保持较强的承载力与滞回性能。利用有限元分析软件ABAQUS,对该种新型节点--盖板加强型狗骨式节点的力学性能进行了分析,并将其与盖板加强型、狗骨式以及普通节点进行了对比。研究结果表明:盖板加强型狗骨式节点的极限承载力低于盖板加强型节点,但高于普通节点以及狗骨式节点;盖板加强型狗骨式节点的节点域的应力以及剪切变形均较小,可以有效避免节点域焊缝的脆性破坏;盖板加强型狗骨式节点的延性系数仅次于狗骨式节点,等效粘滞系数与狗骨式节点相仿,且都明显高于普通节点和盖板加强型节点,表现出良好的延性与耗能性能。As the researched joint type denting the girder flange of steel joints, the cover plate was used instrengthening the girder end to keep the beating capacity and hysteretic behavior strong while the plastic hinge of jointis shifting out. The finite element analysis software ABAQUSwas used to analyze the mechanical property of the coverplate reinforced god bone joint, which is a brand new type, and it was taken in comparison with that of cover plate, dogbone and regular kind. The research shows, the ultimate bearing capacity of cover plate reinforced dog bone joint islower than that of cover plate reinforced joint, but higher than that of regular joint and dog bone joint. The cover platereinforced dog bone joint has small degree of stress and shear defolxnation in its domain of joint, so that the brittlebreak of welding of joint domain was effectively avoided. The ductility factor of cover plate reinforced dog bone joint issecond only to that of dog bone joint, its equivalent viscosity coefficient is similar to that of dog bone type, and muchhigher than that of regular and cover plate reinforced type. The satisfactory ductility and energy consumption perform-ance was displayed.

关 键 词：盖板加强型节点 塑性铰外移 剪切变形 延性 耗能性能 

分 类 号：U445.47[建筑科学—桥梁与隧道工程]