钢框架梁-柱节点的塑性铰外移研究  

Research of Plactic-hinge Keep Away from the Beam-column Joint in Steel Frame

作　　者：陈穗先[1] 蔡健[2] 杨春[2] 苏国维[3] 

机构地区：[1]华南师范大学基建处,广州510631 [2]华南理工大学土木与交通学院 [3]同济大学建筑设计研究院,上海200092

出　　处：《国外建材科技》2008年第3期109-112,共4页Science and Technology of Overseas Building Materials

摘　　要：基于对梁-柱刚性连接节点的震害的大量调查研究,总结了若干用于迫使塑性铰离开柱面的节点形式。介绍了一种新型整体式加腋节点,该节点通过增加梁端截面有效高度,提高加腋区内抗弯承载能力,改变加腋长度及坡度,使得塑性铰出现在腋区以外,节点构造简洁,节点焊接质量容易得到保证,节点整体的设计抗弯能力大,具有良好的塑性转动能力,为钢结构梁-柱的节点设计提供有益参考。Base on researches of damage under earthquake actions of beam-column rigid connections, the types of beamcolumn connections, whose plastic hinge is away from the columns, are concluded. A new kind of connection, integral connection with haunch, is introduced. The cross section of the ends of the beams is increased to enhance the flexural bearing capacity of the haunch region, and by changing the length and slope of the haunch, the plastic hinges can be secured to be out of the haunch region. The construction of the new connection is very simple, and the weld quality of the connection is easy to be guaranteed. Researches show that the connection is of high integral design flexural bearing capacity and good plasticity, which can provide valuable reference for design of beam-column connections in steel structures.

关 键 词：钢结构 梁-柱刚性节点 塑性铰 加腋节点 

分 类 号：TU391[建筑科学—结构工程]