文档介绍：
不同构造形式延性节点的钢框架损伤退化
滞回性能有限元分析#
董立婷,王燕**
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(青岛理工大学土木工程学院,青岛 266033)
摘要:针对空间钢框架在低周反复荷载作用下的滞回性能、破坏机理、损伤退化性能进行了
有限元分析等。研究结果表明:加腋型节点钢框架可以有效降低梁柱翼缘连接焊缝处应力,
与其它构造形式节点相比,其耗能能力最强;翼缘板加强型节点可使梁柱翼缘焊缝处应力降
低约为 20%。不同构造形式节点钢框架在低周反复荷载作用下承载力化正负向退化不一致;
刚度退化曲线差别很小,钢框架节点形式的构造差异对其刚度退化曲线影响不显著。
关键词: 结构工程;延性节点;空间钢框架;有限元;损伤退化
中图分类号:TU391
Hysteretic Behavior Finite Element Analysis Based on
Damage and Degradation of Different Forms Enhanced
Ductile Nodes in Steel Frames
DONG Liting, WANG Yan
(School of Civil Engineering,Qingdao Technological University,Qingdao 266033)
Abstract: Hysteretic behavior,failure mechanism, degraded performance of Space steel frames
were analyzed under the cyclic loading. The results showed that: Compared to the spatial steel
frame with ordinary node, the spatial steel frame with axillary enhanced node have reduced stress
at beam flange weld and have best energy dissipation capacity; the spatial steel frame with flange
plate enhanced node can reduce the stress at beam flange weld 20%
capacity degradation varies in different steel frame models, stiffness degradation behaves more
consistently. Stiffness degradation curve of different form of nodes in steel frame was not
significant.
Key words: structure engineering; ductile node; spatial steel frame; finite element; damage and
degradation;
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0 引言
在美国和日本发生两次大地震后,