腋板加强型节点空间钢框架在低周反复荷载作用下的抗震性能研究  

Study on Seismic Performance of Space Steel Frames with Haunch Reinforced Connections under Low-Cyclic Loading

作　　者：董立婷[1] 王燕[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《建筑钢结构进展》2014年第3期11-17,共7页Progress in Steel Building Structures

基　　金：国家自然科学基金(51278259)

摘　　要：为对比分析普通节点和腋板加强型节点钢框架的抗震性能,采用ANSYS有限元分析软件对两种不同节点形式的钢框架建立三维空间计算模型,进行了低周反复荷载作用下的有限元模拟。对比分析了两种节点钢框架模型的破坏形态、滞回性能、承载力、耗能能力、强度及刚度退化性能。分析结果表明,腋板加强型节点钢框架能有效地提高钢框架的承载力,达到塑性铰外移的目的,滞回曲线饱满,具有较强的耗能能力,退化性能较普通节点钢框架更缓慢。研究内容可为工程应用和理论分析提供参考。In order to compare the seismic performance of steel frames with conventional and haunch reinforced connections, three-dimensional finite element models of steel frames with two types of connections under low-cyclic loading are established utilizing ANSYS software. Main properties including failure mode, hysteretic behavior, ultimate bearing capacity,energy dissipation capacity, strength and stiffness degradation are evaluated on steel frames with these two types of connections. Analysis results demonstrate that haunch reinforced connections can significantly improve the ultimate bearing capacity of steel frames,and also achieve the purpose of relocation of plastic hinges. Hysteretic curve obtained from analysis is full which indicates strong energy dissipation capacity. Strength degradation of steel frame with haunch reinforced connections is slower than that with conventional connections.

关 键 词：腋板加强型节点 空间钢框架 低周反复荷载 滞回性能 抗震性能 

分 类 号：TU391[建筑科学—结构工程]