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Seismic Performance of an Assembled Self-centering Buckling-restrained Brace and Its Application in Arch Bridge Structures by Shuangshuang Jin; Pupeng Ai; Jianting Zhou; Jiulin Bai is a Engineering article available to read on EtoBox.

What is Seismic Performance of an Assembled Self-centering Buckling-restrained Brace and Its Application in Arch Bridge Structures about?

Aiming to reduce residual deformation, herein, we propose the design concept of a self-centering buckling-restrained brace (SC-BRB) applied to the structural fuse of arch bridge structures. First, a novel assembled SC-BRB with combined disc springs is proposed. Notably, the hysteretic curve characteristics can be effectively controlled by the ratio of the BRB system load capacity to the SC system preload. The construction and operating mechanism of the novel SC-BRB are described, and a theoretical hysteretic model under cyclic loading is derived. Five SC-BRB specimens with different combinations are designed and fabricated. Through quasi-static tests, the characteristics including residual deformation and hysteretic energy dissipation are analyzed and compared to explore the self-centering effect and damage mode. The test results reveal that the hysteresis curve of the assembled SC-BRB is characterized by an apparent flag-type form and stable hysteretic performance. The combined disc spring significantly reduces the residual deformation of the brace, resulting in an apparent self-centering effect. The theoretical hysteretic model proposed in this paper agrees well with the test res

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Author

Shuangshuang Jin; Pupeng Ai; Jianting Zhou; Jiulin Bai

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)