SEMI-RIGIDITY AND INITIAL STIFFNESS OF UNSTIFFENED SINGLESIDED BOLTED-WELDED CONNECTION OF STEEL MOMENT FRAME
-
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。Abstract: 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 connections stiffness. They belong to semi-rigid connections.
-
Key words:
- bolted-welded connection /
- semi-rigid /
- initial stiffness /
- moment-rotation angle curve
-
[2] 施刚,石永久,王元清,等.多层钢框架半刚性端板连接的试验研究[J].清华大学学报,2004,44(3):391-394. 施刚,石永久,王元清.钢结构梁柱半刚性端板连接弯矩-转角全曲线计算方法[J].工程力学,2006,23(5):67-73. [3] 王燕,李华军,厉见芬.半刚性梁柱节点连接的初始刚度和结构内力分析[J].工程力学,2003,20(6):65-69. [4] 卢小松.梁柱半刚性连接的M-关系及其对钢框架性能的影响[D].西安: 西安建筑科技大学,2008. [5] 陈惠发.钢框架稳定设计[M].周绥平,译.上海: 上海世界图书出版公司,1999. [6] GB 500172003 钢结构设计规范[S]. [7] BS EN 1993-1-8: 2005. Eurocode 3: Design of Steel Structures-Part 1-8: Design of Joints[S]. [8] 赵必大,郝际平.钢框架梁柱焊接连接的半刚性及其对结构自振频率影响的研究[J].结构工程师,2008,24 (6):90-95. [9] 李国强,沈祖炎.钢结构框架体系弹性及弹-塑性分析与计算理论[M].上海: 上海科学技术出版社,1996. [10] 施刚,石永久,王元清.钢框架梁柱端板连接的非线性有限元分析[J].工程力学,2008,25(12):79-85.
点击查看大图
计量
- 文章访问数: 96
- HTML全文浏览量: 7
- PDF下载量: 113
- 被引次数: 0