Hysteretic performance of stainless steel double extended end-plate beam-to-column joints subject to cyclic loading

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • Wuhan University

Abstract

This paper focuses on the hysteretic performance of stainless steel beam-to-column joints with double extended end-plate connections under cyclic loading. Six full-scale joint specimens were fabricated, including three interior column joints and three exterior column joints. Two stainless steel grades — austenitic grade EN 1.4301 and duplex grade EN 1.4462, and one carbon steel grade Q345B were considered. A4-80 stainless steel bolts and grade 10.9 high strength steel bolts were employed to assemble the joint specimens. The cyclic loading tests were conducted using the loading protocol set in Chinese standard JGJ/T 101. The force versus displacement (F-Δ) hysteresis curves were recorded, and the failure modes, the ductility, the strength and stiffness degradation, and the energy dissipation capacity of the tested joints were analysed and discussed in detail. Empirical hysteresis models were developed and calibrated against the recorded hysteretic curves and energy dissipation capacities of the tested joints. The experimental results involving the initial rotational stiffness values and the moment resistances were further utilised to evaluate the accuracy of current design provisions codified in EN 1993-1-8, ANSI/AISC 358 and GB 51022. The comparison shows that the development of accurate design guidance accounting for the pronounced strain hardening of stainless steels is warranted.

Bibliographic note

Funding Information: This study was supported by the Natural Science Foundation of Hubei Province, China (Grant no. 2018CFB441 ), National Natural Science Foundation of China (Grant no. 51508424 ) and the Fundamental Research Funds for the Central Universities, China (Grant no. 2042017gf0047 ). Publisher Copyright: © 2021 Elsevier Ltd

Details

Original languageEnglish
Article number107787
Number of pages16
JournalThin-Walled Structures
Volume164
Early online date16 Apr 2021
Publication statusPublished - Jul 2021

Keywords

  • Beam-to-column joint, Cyclic loading, Design method, Ductility, End-plate connection, Experimental test, Failure, Hysteretic performance, Stainless steel