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Experimental Investigations of Eccentrically Braced Frame(EBFs) with Replaceable Shear Links Subject to Cyclic Lateral Load

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Abstract

This sentence discusses a possible solution to overcome the disadvantages of traditional eccentrically braced frame systems (EBFs). The proposed solution involves separating the shear links from the frame beams and utilizing double-tube buckling restrained braces with contact rings. These modifications aim to improve the overall performance of the frame system. To investigate the mechanical characteristics of this structural system, an experimental study was conducted, involving the design of two K-type EBFs and testing four distinct replaceable shear links. The stress distribution, load–displacement curves, and hysteresis curves of this structural system were obtained by conducting cyclic lateral loading tests on these specimens. Subsequently, the hysteretic properties, load bearing capacity, and deformation capacity of the member underwent analysis. An exploration was conducted into the primary influences on the structural mechanical characteristics. The research indicates that the double-tube buckling restrained braces with contact ring enhance the structural strength and synergistically perform with shear links to dissipate energy, while ensuring improved performance. Comparison of the date of different parameters shear links shows that the placement of stiffening rib increased the energy dissipation performance by 41.2% and shear capacity by 14.6% for the same sectional dimension of shear links. In the shear links with two stiffening ribs, the larger sectional dimension improved the energy dissipation performance by 11.3% relative to the shear links with smaller sectional dimension. For the shear links with one stiffening rib, the increase in sectional dimension, on the contrary, reduced the energy dissipation performance by 18.4%

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Acknowledgements

Funding for this study is being provided by the National Science Foundation of China (NSFC) (51968044, 51368037) and the National Key Research, Development Program of China (2019YFD1101003) and Gansu Provincial Department of Housing and Urban–Rural Development Construction Science and Technology Project Establishment Plan (JK2022-06). The Engineering Research Center of the Ministry of Education for Seismic Safety and Disaster Reduction in Western China has been gratefully acknowledged for its support in providing the necessary experimental conditions for conducting this study.

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Authors and Affiliations

  1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China

    Dongbo Xu, Zhanzhong Yin, Dazhe Feng & Ligong Wang

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  1. Dongbo Xu
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  2. Zhanzhong Yin
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  3. Dazhe Feng
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  4. Ligong Wang
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Correspondence to Zhanzhong Yin.

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Xu, D., Yin, Z., Feng, D. et al. Experimental Investigations of Eccentrically Braced Frame(EBFs) with Replaceable Shear Links Subject to Cyclic Lateral Load. Arab J Sci Eng (2024). https://doi.org/10.1007/s13369-024-08927-5

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