Overall Stability Analysis of Improved Buckling Restrained Braces

Abstract

Abstract:In order to improve the behavior of double-tube buckling restrained braces (BRBs), it is proposed to set contact rings between inner tube and outer tube of the brace. As a result, they can provide lateral constraint for the inner tube; this is the improved buckling restrained braces (IBRBs). In this paper, a program was edited by the language of MATLAB based on theoretical model formulation of IBRBs and applied to the calculation of overall stability strength capacity. Finite element models of IBRBs were carried out and both load displacement curves and strength capacity were obtained. Tests on IBRBs were also conducted. The results of numerical simulation agreed with the ones of the program and tests. It indicated that the program was reasonable so it could provide a basis for the analysis of overall stability strength capacity of these kinds of IBRBs.

The Seismic Performance of Double Tube Buckling Restrained Brace With Cast Steel Connectors

“…Since then, Yin et al [27] added a contact ring between the inner and outer components to improve the doubletube BRB. Finite component analysis and tests showed that this support has good energy dissipation performance, and the lateral stiffness of the inner tube confined with the contact rings is significantly improved [28,29]. Hence, this BRB could be introduced to SCBF systems to replace the traditional support to address the limitation of premature buckling.…”

Experimental Study on Energy Dissipation Performance and Failure Mode of Web-Connected Replaceable Energy Dissipation Link

“…In past researches, there were many on the end plate connection type energy dissipation beam, but few on the web connection type. Based on the previous researches [42][43][44][45], it can be found that the failure of the end plate connection type energy dissipation link is mainly due to the failure of the flange and the failure of the weld, which reduces the constraint of the flange on the web and further leads to the reduction of the bearing capacity of the link. This paper presents an experimental research program that utilizes web connections at the link-to-beam interface.…”

بررسی رفتار مهاربند کمانش‌ ناپذیر پیشنهادی متشکل از لوله‌های تودرتو تحت اثر بارگذاری چرخه‌یی

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