[1]王永贵,高尔新.端部加强型双重钢管防屈曲支撑试验研究[J].世界地震工程,2012,(04):122-130.
 WANG Yonggui,GAO Erxin.Experimental study on end enhanced double-steel tube buckling-restrained brace[J].,2012,(04):122-130.
点击复制

端部加强型双重钢管防屈曲支撑试验研究
分享到:

《世界地震工程》[ISSN:/CN:]

卷:
期数:
2012年04期
页码:
122-130
栏目:
出版日期:
2012-10-12

文章信息/Info

Title:
Experimental study on end enhanced double-steel tube buckling-restrained brace
作者:
王永贵12 高尔新1
1. 中国矿业大学 力学与建筑工程学院,北京 100083;
2. 河南理工大学 土木工程学院,河南 焦作 454000
Author(s):
WANG Yonggui12 GAO Erxin1
1. School of Mechanics﹠Civil Engineering, China University of Mining﹠Technology, Beijing 100083, China;
2. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China
关键词:
端部加强防屈曲支撑滞回性能恢复力模型参数
Keywords:
end enhancementbuckling-restrained bracehysteretic behaviorrestoring force modelparameter
分类号:
U442.5+5
摘要:
为了研究端部加强型双重钢管防屈曲支撑的力学性能,检验间隙及约束比变化对支撑性能的影响,设计并制作了6个防屈曲支撑试件,通过低周循环加载静力试验,研究了力-位移滞回曲线、恢复力模型、割线刚度变化规律、粘滞等效阻尼比、耗能系数等滞回性能,并比较研究了间隙及约束比变化对防屈曲支撑性能的影响。研究表明:端部加强型双重钢管防屈曲支撑性能稳定,延性较高,具有良好的耗能性能和抗低周疲劳特性,其恢复力特性可以采用双线性模型进行描述;间隙应控制在合理的范围内,大于2mm或为0mm时均不利于内核钢管材料强度的发挥,影响支撑的耗能及延性;随着约束比的增大,耗能能力增强,但增加的幅度变小,在满足约束比限值情况下,约束比的变化对支撑的性能不产生明显的影响。
Abstract:
To study the mechanical behaviour of the end enhanced double-steel tube buckling-restrained brace (BRB), and test the impact of gap and constraints ratio changes on the performance of BRB, six buckling-restrained brace specimens were designed and produced, and the tension-compression cyclic loading hysteretic performance test of the specimens was conducted,the force-displacement hysteretic curve, restoring force model, variation vegularity of secant stiffness, viscous equivalent damping ratio, energy dissipation factor, etc were researched. And a comparative study on the change of the gaps and constraints ratio on the BRB performance was carried out.Studies show that the BRB displays stable behavior and higher ductility and possess excellent energy dissipation performance and resistance to low cycle fatigue. The restoring force behavior of BRB can be described by use of the bilinear model. Gap should be controlled within a reasonable range. When the gap is greater than 2mm or equal to 0mm the energy dissipation and ductility of BRB will be reduced. With increase of the constraint ratio,the energy dissipation capacity increases,but the increase rate becomes smaller. When the constraint ratio is within certain limits,the changes of constraint ratio do not bring about significant impact on the performance of BRB.

相似文献/References:

[1]李小龙,王泽军,冯曼,等.考虑填充墙作用的消除底部薄弱层的防屈曲支撑简化设计方法[J].世界地震工程,2017,33(01):237.
 LI Xiaolong,WANG Zejun,FENG Man,et al.Simplified design method of buckling restraining brace to eliminate weak layer of bottom considering effect of infill walls[J].,2017,33(04):237.
[2]潘毅,高宪,易路行,等.基于剪力比和刚度比的防屈曲支撑-RC框架抗震设计方法分析[J].世界地震工程,2017,33(04):059.
 PAN Yi,GAO Xian,YI Luxing,et al.Investigation of the seismic design methods of buckling-restrained braced-reinforced concrete frame structures based on shear ratio and stiffness ratio[J].,2017,33(04):059.
[3]李晓莉,邹雨鹤,王东升.强震下拱式体系桥梁震害特征及抗震研究[J].世界地震工程,2018,34(02):033.
 LI Xiaoli,ZOU Yuhe,WANG Dongsheng.Seismic damage characteristics and research of arch bridges under strong earthquake[J].,2018,34(04):033.

备注/Memo

备注/Memo:
收稿日期:2011-5-22;改回日期:2012-2-21。
基金项目:河南省教育厅自然科学基金(2011B560007);河南理工大学青年基金(Q2010-46)
作者简介:王永贵(1977-),男,讲师,主要从事工程抗震研究.E-mail:wygzhj@sina.com
更新日期/Last Update: 1900-01-01