Vol. 20, No. 4, pp. 397-405 (2024)
NUMERICAL INVESTIGATION ON SEISMIC PERFORMANCE OF
PREFABRICATED STEEL BEAM-TO-COLUMN CONNECTION WITH
REPLACEABLE U-SHAPED PLATE
Xun Zhang 1, Bin Zhou 1, Jun-Dong Gao 1, *, Hui Qian 1, Lian-Zhi Song 2 and Li-Ming Cai 3
1 Xun Zhang, Bin Zhou, Jundong Gao and Hui Qian, School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, PR China
2 Lianzhi Song, Henan Xinya Steel Structure Engineering Co., Ltd, Zhengzhou 452470, RP China
3 Liming Cai, Henan Architectural Design and Research Inst. Co., Ltd., Zhengzhou 450099, PR China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 5 March 2024; Revised: 19 September 2024; Accepted: 20 September 2024
DOI:10.18057/IJASC.2024.20.4.7
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ABSTRACT
This paper presents a novel prefabricated steel beam-to-column connection with a replaceable U-shaped plate (PSCU) aimed at enhancing the seismic resilience of steel structures and enabling expedited assembly, disassembly, and post-earthquake recovery. The structural design of the PSCU is delineated, along with the articulation of seismic design objectives and methodologies. A sophisticated finite element (FE) model for PSCU is constructed utilizing solid elements, and the fidelity of this modeling paradigm is validated against documented experimental findings. Quasi-static numerical simulations are conducted for 11 connection patterns with varying U-shaped plate thickness, T-shaped plate thickness and bolt quantity. Comparative investigations into hysteresis curves, failure modes, skeleton curves, and ductility coefficients affirm the precision of the seismic design objectives and methodologies. The findings underscore a pronounced ductile failure in this connection, characterized by a discernible four-stage failure progression: elastic, slip, elastic-plastic, and plastic stages. The post-earthquake recovery method for PSCU was proposed and verified, and recommendations for the design of PSCU were put forward. This research offers a robust scientific basis for the expeditious post-earthquake functional recovery in steel frame structures.
KEYWORDS
Prefabricated steel beam-to-column connection, Replaceable U-shaped plates, Post-earthquake functional recovery, Seismic performance, Numerical investigations
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