2007 Volume 72 Issue 620 Pages 117-124
The authors conceived buckling-restrained braces providing stable hysteretic characteristics even under high-strain-rate conditions. Based on a series of cyclic loading tests, a significant correlation between the brace's cumulative strain energy until the failure and restraining force was revealed. When the brace's cumulative strain energy is given as a design condition, the buckling-restrained brace is designed using the proposed performance evaluation formula. In this paper, different specimens from what used in the past tests such as with different core plate width-to-thickness ratios and restraining forces, and with different unbonded material thicknesses and cross section details are fabricated and loaded. The strict scope of application for the performance evaluation formula proposed by the previous paper is defined by considering the test results.
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