蔺新艳, 杨新宇, 王新武,等.单边螺栓连接中心支撑钢框架抗震性能分析[J].河南理工大学学报（自然科学版）,doi:10.16186/j.cnki.1673-9787.2023020073

LIN X Y, YANG X Y, WANG X W,et al.Seismic performance analysis of centrally braced steel frame with one -side boltconnection[J].Journal of Henan Polytechnic University(Natural Science) ,doi:10.16186/j.cnki.1673-9787.2023020073

单边螺栓连接中心支撑钢框架抗震性能分析（网络首发）

蔺新艳1,2,3,4, 杨新宇1,2,3,4, 王新武2, 孙海粟2, 刘欢欢2,3, Il YoungJang4

1.河南理工大学 土木工程学院，河南 焦作  454000；2.洛阳理工学院 河南省新型土木工程结构国际联合实验室，河南 洛阳  471023；3.武 汉理工大学 理学院，武汉  430070；4.金乌国立工科大学 土木工程学院，龟尾  39177

摘要:为研究支撑-半刚接钢框架结构体系的抗震性能，设计了一根由嵌套式单边螺栓与T型 钢构成的半刚性梁柱节点的中心支撑钢框架，进行了拟静力试验与有限元模拟。分析了其滞 回、承载、耗能等抗震指标，结果表明：试件破坏模式主要为支撑受压失稳破坏，塑性变形主要 累积在支撑体系上，整体呈现延性破坏特征；梁柱及T型钢节点无明显塑性变形，支撑断裂后， 表明结构具有两道抗震防线；支撑与半刚接框架协同工作使得试件具有较高的抗侧刚度抵抗 水平变形，且承载力较高、滞回性能稳定、耗能能力优良；单边螺栓在试验过程中的受力性能较 普通高强螺栓并无较大差别，未出现严重的预紧力松弛现象，并能高效的保持螺栓预紧力。并 以考虑结构延性为前提，降低支撑长细比，才能有效提高结构的抗震性能。

关键词:中心支撑;单边螺栓;T型钢;半刚性连接;抗震性能

中图分类号:TU391;TU352.11

doi:10.16186/j.cnki.1673-9787.2023020073

基金项目:国家自然科学基金资助项目（51278238；51678284）；中原科技创新领军人才（214200510002）；河南省高校科技创新团队 （21IRTSTHN010）；河南省科技厅科技攻关（212102310969）

收稿日期:2023-02-27

修回日期:2023-04-10

网络首发日期: 2023-09-27

Seismic performance analysis of centrally braced steel frame with one -side boltconnection（Online）

LIN Xinyan1,2,3,4, YANG Xinyu1,2,3,4, WANG Xinwu2, XUN Haisu2, LIU Huanhuan2,3, Jang Il Young4

1.College of Civil Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China；2.Henan International Joint Laboratory of New Civil Engineering Structure，Luoyang Institute of Science and Technology，Luoyang  471023，Henan，China；3.School of Science，Wuhan University of Science and Technology，Wuhan  430070，China；4.College of Civil Engineering，Kumoh NationalInstitute of Technology，Gumi-si， 39177

Abstract:In order to study the seismic performance of the brace-semi-rigid steel frame structure system, a centerally braced steel frame with semi-rigid beam-column joints composed of nested one-side bolts and T-stub was designed, and the quasi-static test. Combined with the failure mode of the specimen, its hysteretic performance, bearing capacity, energy dissipation and other seismic indicators are analyzed. The results show that: The failure mode of the specimen is mainly buckling failure of the brace under compression, which shows the characteristics of ductile failure as a whole. The plastic deformation is mainly accumulated on the brace system, and the beam-column and T-stub joints have no obvious plastic deformation,After the brace is broken, the semi-steel frame still has higher bearing capacity, indicating that the structure have two seismic fortification lines. The cooperative work of brace and semi-rigid frame makes the specimen have higher lateral stiffness, resistance to horizontal deformation, higher bearing capacity, stable hysteretic performance and excellent energy dissipation capacity. The mechanical performance of the one-side bolts during the test is not significantly different from that of ordinary high-strength bolts. There is no serious preload relaxation phenomenon, and the bolt preload can be maintained efficiently.

Key words:center brace;one-side bolts;T-stub;semi-rigid connection;seismic performance

CLC: TU391;TU352.11