Development of a connection equipped with fuse angles for steel moment resisting frames

Xiuzhang He, Yiyi Chen, Ke Ke, Tiefeng Shao, Michael C.H. Yam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In this study, an innovative replaceable fuse connection for beam members in moment resisting steel frames was proposed. Steel angles are designed as fuse elements for energy dissipation and post-earthquake replacement. The load carrying mechanism of the connection was explored. In order to examine the feasibility of the notion, a total of six full-scale subassemblies of beam-to-column connections were tested. The test parameters that affect the performance of the fuse connection were studied, and the repairability was validated by a retest specimen with replaced fuse angles. Test results demonstrated that the hysteretic response curves of the test connections subjected to cyclic loading were plump, and the fuse angles can concentrate the inelasticity effectively in a wide deformation range. The novel connections equipped with fuse angles can achieve an initial elastic stiffness close to that of a conventional welded beam-to-column connection. In addition, theoretical equations for predicting the elastic stiffness and resistance of the connection were developed, and their sufficiency was validated by test results.

Original languageEnglish
Article number114503
JournalEngineering Structures
Volume265
DOIs
Publication statusPublished - 15 Aug 2022

Keywords

  • Angle sections
  • Damage control
  • Steel moment connection
  • Structural fuse

ASJC Scopus subject areas

  • Civil and Structural Engineering

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