Experimental study and finite element analysis of energy dissipating outriggers

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This article uses experiments and finite element analyses to study the structural responses and energy dissipation capacities of three different outriggers of an actual tall building project.

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12 p.

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Yang, Qingshun; Lu, Xinzheng; Yu, Cheng & Gu, Donglian November 11, 2016.

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This article is part of the collection entitled: UNT Scholarly Works and was provided by the UNT College of Engineering to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 81 times. More information about this article can be viewed below.

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This article uses experiments and finite element analyses to study the structural responses and energy dissipation capacities of three different outriggers of an actual tall building project.

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12 p.

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Abstract: The outriggers are widely adopted in tall and super-tall buildings. Their energy dissipation capacity can significantly influence the nonlinear seismic responses of the entire building structure. Based on an actual tall building project, the structural responses and energy dissipation capacities of three different outriggers were studied through experiments and finite element analyses. The test results of conventional outrigger specimen showed a steep deterioration after peak strength and an unfavorable energy dissipation capacity due to the global buckling of the braces and the local buckling of the chords after flexural yielding. Using buckling-restrained braces and reduced beam sections in a new design of the outriggers, the energy dissipation capacity and the ductility of the outriggers were significantly improved. The yield and peak strengths were further improved with the use of high-strength steel in chords on a third specimen. The finite element simulation of the three specimens indicated that the initial imperfection of the specimens shall be considered, and the developed finite element models yielded good agreements with the test results. The outcome of this work can provide additional references for the application of the outriggers in tall buildings.

The final, definitive version of this paper has been published in Advances in Structural Engineering, 20/8, November 2016 published by SAGE Publishing, All rights reserved.

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  • Advances in Structural Engineering, 20(8), Sage Publishing, November 11, 2016, pp. 1-12

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  • Publication Title: Advances in Structural Engineering
  • Volume: 20
  • Issue: 8
  • Pages: 12
  • Page Start: 1196
  • Page End: 1209
  • Peer Reviewed: Yes

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  • November 11, 2016

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  • Feb. 1, 2018, 6:37 p.m.

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  • Nov. 14, 2023, 1:55 p.m.

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Yang, Qingshun; Lu, Xinzheng; Yu, Cheng & Gu, Donglian. Experimental study and finite element analysis of energy dissipating outriggers, article, November 11, 2016; Thousand Oaks, California. (https://digital.library.unt.edu/ark:/67531/metadc1065436/: accessed May 30, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Engineering.

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