Effect of openings on nonlinear dynamic responses of masonry infilled RC frames

Y.p. Yuen, J. S. Kuang

Research output: Contribution to conferencePaperpeer-review

Abstract

Due to the architectural efficiency of masonry-infilled reinforced concrete frames, the frames are highly common structural forms for buildings. Research on responses of fully infilled RC frames under seismic effects has been active over the last few decades. Nevertheless, the effect of openings in the infills on the nonlinear dynamic responses has seldom been studied. This paper presents a numerical study on the global nonlinear seismic responses of RC frames containing infill walls with three types of openings, namely two-third storey height infills, window-opening infills and door-opening infills. On the basis of the analysis results, it is found that infilled frames with window or door openings exhibit ratchetting phenomena in hysteretic behaviour leading to asymmetric damage and lateral force transfer mechanisms. Furthermore, serious short column phenomenon occurs in the 2/3-storey-height infilled frame structures, in where the central short columns experience serious localised damage resulting significant pinching phenomenon in the hysteretic loops.

Original languageEnglish
Pages736-745
Number of pages10
DOIs
StatePublished - 1 Jan 2015
Event5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 - Hersonissos, Crete, Greece
Duration: 25 May 201527 May 2015

Conference

Conference5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015
CountryGreece
CityHersonissos, Crete
Period25/05/1527/05/15

Keywords

  • Discrete finite element
  • Infilled frame
  • Nonlinear seismic response analysis
  • Unreinforced masonry wall

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