[1]李刚,赵严峰,李博凡,等.短屈服段屈曲约束支撑钢框架抗震性能研究[J].西安建筑科技大学学报(自然科学版),2023,55(06):801-809.[doi:10.15986/j.1006-7930.2023.06.002]
　LI Gang,ZHAO Yanfeng,LI Bofan,et al.Seismic behavior of steel frames with short yield buckling-restrained braces[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2023,55(06):801-809.[doi:10.15986/j.1006-7930.2023.06.002]
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短屈服段屈曲约束支撑钢框架抗震性能研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
55
期数:
2023年06期
页码:
801-809
栏目:
出版日期:
2023-12-28

文章信息/Info

Title:
Seismic behavior of steel frames with short yield buckling-restrained braces
文章编号:
1006-7930(2023)06-0801-09
作者:
李刚1; 2; 赵严峰3; 李博凡2; 4; 陈向荣2; 4
（1.西安建筑科技大学 设计研究总院，陕西 西安 710055；2.西安建筑科技大学 结构工程与抗震教育部重点实验室，陕西 西安 710055；3.浙江绿城时代建设管理有限公司，浙江 杭州 310000；4.西安建筑科技大学 土木工程学院，陕西 西安 710055）
Author(s):
LI Gang1; 2;  ZHAO Yanfeng3;  LI Bofan2; 4;  CHEN Xiangrong2; 4
（1.Design and Research Institute, Xi′an Univ. of Arch. & Tech., Xi′an 710055 China; 2.Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education (XAUAT), Xi′an 710055 China; 3.Zhejiang GreenTime Construction Management Co., Ltd, Hangzhou 310000 China; 4.School of Civil Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055 China）
关键词:
屈曲约束支撑; 钢框架; 抗震性能; 残余层间位移角; 时程分析
Keywords:
buckling-restrained brace; steel frame; seismic behavior; the residual story drift; time history analysis
分类号:
TU391
DOI:
10.15986/j.1006-7930.2023.06.002
文献标志码:
A
摘要:
屈曲约束支撑滞回性能优异，大量应用于中心支撑钢框架结构，可极大提高钢框架的抗震性能.但已有研究表明，当屈曲约束支撑钢框架遭遇罕遇地震时，结构产生较大的残余变形，导致震后更换支撑困难.为此提出了短屈服段屈曲约束支撑，并将其置于钢框架中进行动力时程分析.结果表明，短屈服段屈曲约束支撑钢框架的最大层间位移角较传统屈曲约束支撑钢框架最大降幅在10%左右，减小结构的残余层间位移角可达30%以上；在保证结构安全的同时，很大程度上提高了结构在震后的可修复性和遭遇二次地震时的可靠性，并且随着结构刚度的增加，额外的地震荷载几乎全由屈曲约束支撑承担，并不会给框架增加负担.
Abstract:
Buckling restrained braces (BRBs) have excellent hysteretic behavior. A large number of existing and newly constructed buildings use BRBs to improve the seismic performance of steel frames. However, previous studies have shown that the residual deformation of BRB steel frame can enlarge when encountering extreme earthquake, which makes the brace replacement difficult. In this paper, a BRB with short yield section is proposed and placed in a steel frame for dynamic time history analysis. The results show that, with the proposed BRB with short yield section, the maximum inter-story drift of the structure can be reduced by around 10%, causing the residual drift decreased to more than 30%. It not only ensures the structural safety, but also improves the repairability of the structure after the earthquake and the reliability when encountering the second earthquake. Moreover, with the increase of structural stiffness, the additional seismic load is almost entirely borne by BRBs, which does not increase the load on the frame.

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备注/Memo

备注/Memo:
收稿日期:2022-07-02修回日期:2022-09-08
基金项目:陕西省自然科学基金面上项目(2022JM-268)
第一作者:李刚（1972—），男，硕士，高级工程师，主要从事结构工程方面的研究. E-mail:403375011@qq.com
通信作者:陈向荣（1972—），女，博士，副教授，主要从事结构工程方面的研究. E-mail:cxr90@126.com
更新日期/Last Update: 2024-02-04