Shake table tests on RC frame infilled by slitted masonry panels

Y.p. Yuen, Han hui Zhang*, J. S. Kuang, Qunxian Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Unreinforced masonry infill walls are widely used as non-structural partitions in RC frames. The effects of infills on the structural responses are often ignored in the design process since they are generally considered as expendable elements. However, recent studies have shown that not only shear damage can be inflicted to the columns braced by the infill walls, but also that the structural stability can be jeopardised by the fall-off of the infills. This paper presents the development of new detailing methods for the infill walls, which features slit panels, isolation gaps between the infills and columns, and anchorage of the infills. The proposed detailing methods were tested and verified experimentally using shake-table tests on five 1/3-scale infilled RC frame specimens with different combinations of the features stated above. The design and construction of the shake-table test specimens have taken into account the similitude requirements. The test results indicate that the proposed detailing method effectively reduced the undesirable interaction between column and infill walls. And the use of proper anchorage could prevent the fall off of infills from the bounding frame. Furthermore, the specimens with slit infill walls displayed better seismic performances, which could be attributed to the rocking behaviour of the sub-panels with increased aspect ratios.

Original languageEnglish
Pages (from-to)4027-4052
Number of pages26
JournalBulletin of Earthquake Engineering
Volume16
Issue number9
DOIs
StatePublished - 1 Sep 2018

Keywords

  • Anchorage
  • Reinforced concrete
  • Rocking
  • Shaking table test
  • Slit walls
  • Unreinforced masonry infill

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