THE SEISMIC PERFORMANCE OF DOUBLE TUBE BUCKLING RESTRAINED BRACE WITH CAST STEEL CONNECTORS | |
Yin, Zhan-Zhong1,2; Feng, Da-Zhe1; Yang, Bo1; Pan, Chao-Chao1 | |
2022-03 | |
发表期刊 | Advanced Steel Construction |
ISSN | 1816-112X |
卷号 | 18期号:1页码:436-445 |
摘要 | The special concentrically braced frame (SCBF) is an aseismic structure, but its bracing system exhibits brittle failure and premature buckling connected with the weld fracture of the gusset plate and the post-buckling of the braces; thus, maximizing the role of energy dissipation is difficult. Here, this paper proposes a system of double-tube buckling-restrained brace with cast steel connectors for steel SCBFs. The large inelastic deformation of the bracing system is mainly concentrated in the ductile cast connectors under the earthquake, and the degree of buckling and post-buckling of braces can be reduced. Cyclic loading tests were conducted on two groups of specimens with different parameters, then the deformation trend, stress distribution, energy dissipation capacity, and stiffness degradation of the specimens were analyzed. The improved measures of increasing the width–thickness ratio of the energy dissipation plate and stiffener and casting the end right-angle tip tightly for a certain length of cast connector in Group 2 specimens, which overcomes the brittle fracture caused by the crack of the connection segment due to flexural buckling in Group 1 specimen tests, was evaluated. The cast steel connector conducts the main energy dissipation member that exhibits good ductile and energy absorption performance, and the advantages of using improved ductile cast steel connectors to obtain the energy dissipation of BRBs are illustrated. The test results provided direct evidence that the seismic performance of specimens is closely associated with the length of the energy dissipation segment of the cast connector and the overstrength factor of axial force. Also, the strength, rigidity, deformation, and energy dissipation performance of the members can be independently controlled by reasonably designing the cast connector. Our results provide the underlying insights needed to guide the design of the bracing connector. © 2022 by The Hong Kong Institute of Steel Construction. All rights reserved. |
关键词 | Buckling Deformation Energy dissipation Plates (structural components) Seismic waves Seismology Steel castings Steel construction Stress analysis Structural frames Aseismic structure Bracing systems Buckling restrained braces Buckling restrained brace; cast steel connector Cast steel Cyclic loading test Seismic Performance Special concentrically braced frames Steel connector Tube buckling |
DOI | 10.18057/IJASC.2022.18.1.2 |
收录类别 | EI ; SCIE |
语种 | 英语 |
WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
WOS类目 | Construction & Building Technology ; Engineering, Civil ; Materials Science, Characterization & Testing |
WOS记录号 | WOS:000767312500002 |
出版者 | Hong Kong Institute of Steel Construction |
EI入藏号 | 20221311846406 |
EI主题词 | Cyclic loads |
EI分类号 | 405.2 Construction Methods ; 408.1 Structural Design, General ; 408.2 Structural Members and Shapes ; 484 Seismology ; 484.1 Earthquake Measurements and Analysis ; 525.4 Energy Losses (industrial and residential) ; 534.2 Foundry Practice ; 545.3 Steel ; 951 Materials Science |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/158064 |
专题 | 土木工程学院 |
通讯作者 | Yin, Zhan-Zhong |
作者单位 | 1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Western Engn Res Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Peoples R China |
第一作者单位 | 兰州理工大学 |
通讯作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Yin, Zhan-Zhong,Feng, Da-Zhe,Yang, Bo,et al. THE SEISMIC PERFORMANCE OF DOUBLE TUBE BUCKLING RESTRAINED BRACE WITH CAST STEEL CONNECTORS[J]. Advanced Steel Construction,2022,18(1):436-445. |
APA | Yin, Zhan-Zhong,Feng, Da-Zhe,Yang, Bo,&Pan, Chao-Chao.(2022).THE SEISMIC PERFORMANCE OF DOUBLE TUBE BUCKLING RESTRAINED BRACE WITH CAST STEEL CONNECTORS.Advanced Steel Construction,18(1),436-445. |
MLA | Yin, Zhan-Zhong,et al."THE SEISMIC PERFORMANCE OF DOUBLE TUBE BUCKLING RESTRAINED BRACE WITH CAST STEEL CONNECTORS".Advanced Steel Construction 18.1(2022):436-445. |
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