Research on Seismic Performance of a Novel Prefabricated Self-Centering Steel Frame-Support Structural System

Ziqin Jiang; Tongkuan Wang; Wenying Zhang; Wei Han; Zuosong Zhuang

doi:10.13206/j.gjgS24031902

Volume 39 Issue 12

Dec. 2024

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Ziqin Jiang, Tongkuan Wang, Wenying Zhang, Wei Han, Zuosong Zhuang. Research on Seismic Performance of a Novel Prefabricated Self-Centering Steel Frame-Support Structural System[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(12): 29-37. doi: 10.13206/j.gjgS24031902

Citation:

Ziqin Jiang, Tongkuan Wang, Wenying Zhang, Wei Han, Zuosong Zhuang. Research on Seismic Performance of a Novel Prefabricated Self-Centering Steel Frame-Support Structural System[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(12): 29-37. doi: 10.13206/j.gjgS24031902

Citation:

Ziqin Jiang, Tongkuan Wang, Wenying Zhang, Wei Han, Zuosong Zhuang. Research on Seismic Performance of a Novel Prefabricated Self-Centering Steel Frame-Support Structural System[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(12): 29-37. doi: 10.13206/j.gjgS24031902

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Research on Seismic Performance of a Novel Prefabricated Self-Centering Steel Frame-Support Structural System

doi: 10.13206/j.gjgS24031902

1. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;
2. Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure, Beijing University of Technology, Beijing 100124, China

Received Date: 2024-03-19
Available Online: 2025-01-25

Abstract

Abstract

To investigate the seismic performance of self-centering structural systems and the simplified modeling methods for energy-dissipating components, the paper proposed a novel prefabricated self-centering steel frame-support system based on traditional rigid-frame steel structures. This system incorporates replaceable components, including double-yield-point prefabricated buckling-restrained braces and self-centering prestressed steel frame beam-column joints with dog-bone weakened cover plates, into the traditional rigid-frame structure. A simplified calculation model for the replaceable components was developed by using the finite element software OpenSEES, and its accuracy was verified through a comparison with existing data. Based on the proposed seismic performance-based design objectives, the novel system was designed and its seismic performance was studied through elastic-plastic time-history analysis (NLTHA). The study indicated that the proposed simplified calculation model had high accuracy and could be applied to the elastic-plastic time history analysis of the system. The novel prefabricated system, designed based on the proposed seismic performance indicators, exhibited superior seismic performance compared to traditional systems. The maximum top-floor displacement and maximum inter-story drift of the novel prefabricated system were smaller than those of both the traditional rigid-frame steel structure and the traditional rigid-frame steel bracing structure. Specifically, the maximum top-floor displacements and maximum inter-story drifts in the x-and y-directions were, on average, reduced by 28.35%, 10.13%, and 26.86%, 10.42%, respectively, compared to the traditional rigid-frame steel structure. The double-yield-point prefabricated buckling-restrained braces could control the inter-story drift of the structure, while the inclusion of self-centering prestressed steel frame beam-column joints with dog-bone weakened cover plates could further enhance its energy dissipation capacity.

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References(24)

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