RESEARCH ON OVERALL STABILITY OF ASSEMBLED BUCKLING-RESTRAINED BRACES

DING Yukun; BAO Zonghui; LI Wenwen; ZHANG Wenyuan; ZHANG Yaochun; SONG Hanyu; LI Daming

doi:10.13204/j.gyjzG201909100004

Volume 51 Issue 2

Jun. 2021

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(2): 66-70,105

DING Yukun, BAO Zonghui, LI Wenwen, ZHANG Wenyuan, ZHANG Yaochun, SONG Hanyu, LI Daming. RESEARCH ON OVERALL STABILITY OF ASSEMBLED BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(2): 66-70,105. doi: 10.13204/j.gyjzG201909100004

Citation:

DING Yukun, BAO Zonghui, LI Wenwen, ZHANG Wenyuan, ZHANG Yaochun, SONG Hanyu, LI Daming. RESEARCH ON OVERALL STABILITY OF ASSEMBLED BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(2): 66-70,105. doi: 10.13204/j.gyjzG201909100004

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RESEARCH ON OVERALL STABILITY OF ASSEMBLED BUCKLING-RESTRAINED BRACES

doi: 10.13204/j.gyjzG201909100004

1. Key Lab of Structures Dynamic Behavior and Control of Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
2. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China;
3. China Shanghai Architectural Design & Research Institute Co., Ltd., Shanghai 200063, China

Received Date: 2020-03-20
Available Online: 2021-06-04

Abstract

Abstract

The assembled buckling-restrained brace, which resists axial loads by an inner plate brace while using outer assembled parts to provide the plate brace with lateral restraint, can be used in concentrically braced steel frames. Buckling analysis on the buckling-restrained brace in axial compression revealed that the effective length factors of brace could be obtain by considering critical load, length of brace, flexural rigidity of the restraining parts, etc. Nonlinear analysis revealed that the overall buckling of an assembled buckling-restrained brace had a peak load on the load-deformation curves, and the peak load was close to the load corresponding to the edge yielding of steel tube in outer assembled parts. Therefore, the overall buckling of brace under axial compression could be well evaluated by the edge yielding of restraining parts, and a correlation formula, which took into account initial crookedness, overstrength of the plate brace, flexural rigidity and strength of the restraining parts and clearance,could be provided to check the overall stability of brace.
- buckling-restrained brace,
- buckling analysis,
- correlation formula,
- nonlinear analysis,
- edge yield criteria

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References(15)

References

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