节点域无加劲肋的钢框架栓焊连接边节点的半刚性及其初始刚度  

SEMI-RIGIDITY AND INITIAL STIFFNESS OF UNSTIFFENED SINGLESIDED BOLTED-WELDED CONNECTION OF STEEL MOMENT FRAME

作　　者：李岩[1,2] 郝际平[1] 周琦[1] 解琦[1] 郭宏超[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]四川省建筑设计院,成都610015

出　　处：《工业建筑》2011年第9期120-123,75,共5页Industrial Construction

基　　金：国家自然科学基金项目(50878181);2009年高等学校博士学科点专项科研基金项目(20096120110004)

摘　　要：以钢框架边节点为研究对象,分析栓焊连接节点(节点域无加劲肋)受力后的变形机理,由此推导初始刚度计算公式,并用15个节点有限元模型来验证公式的合理性。结果表明:理论公式计算栓焊连接节点的初始刚度具有足够的精度。最后根据欧洲规范EC3对这15个节点进行分类,结果表明,很多栓焊连接节点不满足刚性节点刚度的要求,属于半刚性节点。Based on a mid-side connection of a steel frame, this paper analyzed the deformation mechanism of the bolted-welded connection after loading and deduced a theoretical formula that could calculate initial stiffness. In order to verify the rationality of the formula, 15 finite element models were established to calculated the initial stiffness. The results show that the theoretical formula is fit to calculate initial stiffness. Besides, according to Eurocode 3, many connections can not meet the demands of rigid connection＇ s stiffness. They be!ong to semi-rigid connections.

关 键 词：栓焊连接节点 半刚性 初始刚度 弯矩-转角曲线 

分 类 号：TU391[建筑科学—结构工程]