Experimental investigation of a high strength steel frame with curved knee braces subjected to extreme earthquakes

Zeyu Zhou, Yiyi Chen, Michael C.H. Yam, Ke Ke, Xiuzhang He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

In this research, the seismic performance of a half-scaled three-storey high strength steel frame with curved knee braces (HSSF-CKB) under extreme earthquakes was investigated through shaking table tests. The test results demonstrated that the test structure maintained an encouraging recentring capacity under extreme earthquakes. By replacing the damaged curved knee braces, the structural stiffness was recovered to a certain extent. The failure mode of the test structure was governed by fracture of high strength steel beams, buckling of curved knee braces, and concrete crushing. Furthermore, a previously proposed analytical model for HSSF-CKBs was further validated by the test data.

Original languageEnglish
Article number110596
JournalThin-Walled Structures
Volume185
DOIs
Publication statusPublished - Apr 2023

Keywords

  • Curved knee braces
  • Extreme earthquakes
  • High strength steel
  • Hybrid structures
  • Shaking table tests
  • Steel frames

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering

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