Component tests of buckling-restrained braces with unconstrained length

Young K. Ju; Myeong Han Kim; Jinkoo Kim; Sang Dae Kim

doi:10.1016/j.engstruct.2008.09.014

Component tests of buckling-restrained braces with unconstrained length

Young K. Ju, Myeong Han Kim, Jinkoo Kim, Sang Dae Kim

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

Abstract

The load-resisting capacity of buckling-restrained braces (BRB) composed of an H-shaped core element and an external tube was investigated in this study by component testing. A study was carried out on the effect of the design parameters such as the thickness of the constraining tube and the length of the unconstrained length of the core ends on the maximum strength and the energy dissipation capability. The performance of the BRB was evaluated by comparing the test results with the recommended provisions for BRB. It was found that the thickness of the external tube and the unconstrained part of the core had a significant effect on the strength and hysteretic behavior of the BRB; with the correct thickness of external tube and unconstrained length, the BRB behaved stably throughout the cyclic loading history until the cumulative plastic deformation reached 330, which far exceeded the value of 200 required by the recommended provisions.

Original language	English
Pages (from-to)	507-516
Number of pages	10
Journal	Engineering Structures
Volume	31
Issue number	2
DOIs	https://doi.org/10.1016/j.engstruct.2008.09.014
Publication status	Published - 2009 Feb

Keywords

Buckling-restrained braces
Component test
Energy dissipation
Unconstrained length

ASJC Scopus subject areas

Civil and Structural Engineering

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10.1016/j.engstruct.2008.09.014

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title = "Component tests of buckling-restrained braces with unconstrained length",

abstract = "The load-resisting capacity of buckling-restrained braces (BRB) composed of an H-shaped core element and an external tube was investigated in this study by component testing. A study was carried out on the effect of the design parameters such as the thickness of the constraining tube and the length of the unconstrained length of the core ends on the maximum strength and the energy dissipation capability. The performance of the BRB was evaluated by comparing the test results with the recommended provisions for BRB. It was found that the thickness of the external tube and the unconstrained part of the core had a significant effect on the strength and hysteretic behavior of the BRB; with the correct thickness of external tube and unconstrained length, the BRB behaved stably throughout the cyclic loading history until the cumulative plastic deformation reached 330, which far exceeded the value of 200 required by the recommended provisions.",

keywords = "Buckling-restrained braces, Component test, Energy dissipation, Unconstrained length",

author = "Ju, {Young K.} and Kim, {Myeong Han} and Jinkoo Kim and Kim, {Sang Dae}",

note = "Funding Information: This research was supported by the Ministry of Construction & Transportation of Korea (03R&D C103A1040001-03A0204-00110), and Basic Research Program of the Korea Science & Engineering Foundation (Grant No. R0A-2006-000-10234-0). It was also supported by a Korea University Grant (K0718321). ",

year = "2009",

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doi = "10.1016/j.engstruct.2008.09.014",

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volume = "31",

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AU - Ju, Young K.

AU - Kim, Myeong Han

AU - Kim, Jinkoo

AU - Kim, Sang Dae

N1 - Funding Information: This research was supported by the Ministry of Construction & Transportation of Korea (03R&D C103A1040001-03A0204-00110), and Basic Research Program of the Korea Science & Engineering Foundation (Grant No. R0A-2006-000-10234-0). It was also supported by a Korea University Grant (K0718321).

PY - 2009/2

Y1 - 2009/2

N2 - The load-resisting capacity of buckling-restrained braces (BRB) composed of an H-shaped core element and an external tube was investigated in this study by component testing. A study was carried out on the effect of the design parameters such as the thickness of the constraining tube and the length of the unconstrained length of the core ends on the maximum strength and the energy dissipation capability. The performance of the BRB was evaluated by comparing the test results with the recommended provisions for BRB. It was found that the thickness of the external tube and the unconstrained part of the core had a significant effect on the strength and hysteretic behavior of the BRB; with the correct thickness of external tube and unconstrained length, the BRB behaved stably throughout the cyclic loading history until the cumulative plastic deformation reached 330, which far exceeded the value of 200 required by the recommended provisions.

AB - The load-resisting capacity of buckling-restrained braces (BRB) composed of an H-shaped core element and an external tube was investigated in this study by component testing. A study was carried out on the effect of the design parameters such as the thickness of the constraining tube and the length of the unconstrained length of the core ends on the maximum strength and the energy dissipation capability. The performance of the BRB was evaluated by comparing the test results with the recommended provisions for BRB. It was found that the thickness of the external tube and the unconstrained part of the core had a significant effect on the strength and hysteretic behavior of the BRB; with the correct thickness of external tube and unconstrained length, the BRB behaved stably throughout the cyclic loading history until the cumulative plastic deformation reached 330, which far exceeded the value of 200 required by the recommended provisions.

KW - Buckling-restrained braces

KW - Component test

KW - Energy dissipation

KW - Unconstrained length

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SP - 507

EP - 516

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ER -

Component tests of buckling-restrained braces with unconstrained length

Abstract

Keywords

ASJC Scopus subject areas

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