STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES

Ding Yukun; Zhang Yaochun

doi:10.13204/j.gyjz200910026

Volume 39 Issue 10

Dec. 2014

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Ding Yukun, Zhang Yaochun. STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(10): 114-119. doi: 10.13204/j.gyjz200910026

Citation:

Ding Yukun, Zhang Yaochun. STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(10): 114-119. doi: 10.13204/j.gyjz200910026

Ding Yukun, Zhang Yaochun. STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(10): 114-119. doi: 10.13204/j.gyjz200910026

Citation:

Ding Yukun, Zhang Yaochun. STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(10): 114-119. doi: 10.13204/j.gyjz200910026

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STUDY ON SEISMIC DESIGN OF THE BEAM CONNECTED BY THE CHEVRON BUCKLING-RESTRAINED BRACES

doi: 10.13204/j.gyjz200910026

1.
School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China

Received Date: 2009-02-20
Publish Date: 2009-10-20

Abstract

Abstract

A seismic response analysis is carried out in order to compare the aseismic performance of three buckling-restrained braced frames(BRBFs).The effects of the two factors,including overstrength of the postyield buckling-restrained brace (BRB) due to the strain-hardening effect and the vertical support for the braced beam by this brace,on the aseismic performance of the beam braced by the chevron unbonded steel plate brace encased in reinforced concrete panel(socalled chevron BRB) are discussed.The analysis reveals that the beams in the three structures remain elasticity under frequent earthquake.The maximum vertical deflection of the beam connected by the chevron braces occurs in the segments of beam between the column and braced points before the brace yielding.Under severe earthquake,the maximum vertical deflection of the braced beams occurs at braced points. The beams designed by taking account of support action of braces but omitting the overstrength of braces develop large plastic deformation,resulting in the slightly larger deflection of the connected beams and the larger vertical gravity forces supported by the chevron BRBs,which make axial plastic deformation of the brace in compression be larger than that of the brace in tension.Whereas,little plastic deformation occurs in the beams designed by taking account of the overstrength but omitting the support action of the braces.

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References(14)

References

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