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Strengthening of hollow brick infill walls with perforated steel plates

  • 투고 : 2013.05.30
  • 심사 : 2013.11.12
  • 발행 : 2014.02.25

초록

The infill walls, whose contribution to the earthquake resistance of a structure is generally ignored due to their limited lateral rigidities, constitute a part of the lateral load bearing system of an RC frame structure. A common method for improving the earthquake behavior of RC frame structures is increasing the contribution of the infill walls to the overall lateral rigidity by strengthening them through different techniques. The present study investigates the influence of externally bonded perforated steel plates on the load capacities, rigidities, and ductilities of hollow brick infill walls. For this purpose, a reference (unstrengthened) and twelve strengthened specimens were subjected to monotonic diagonal compression. The experiments indicated that the spacing of the bolts, connecting the plates to the wall, have a more profound effect on the behavior of a brick wall compared to the thickness of the strengthening plates. Furthermore, an increase in the plate thickness was shown to result in a considerable improvement in the behavior of the wall only if the plates are connected to the wall with closely-spaced bolts. This strengthening technique was found to increase the energy absorption capacities of the walls between 4 and 14 times the capacity of the reference wall. The strengthened walls reached ultimate loads 30-160% greater than the reference wall and all strengthened walls remained intact till the end of the test.

키워드

참고문헌

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피인용 문헌

  1. Seismic strengthening of infill walls with perforated steel plates vol.152, 2017, https://doi.org/10.1016/j.engstruct.2017.09.015
  2. Seismic capacity of masonry infilled RC frame strengthening with expanded metal ferrocement vol.159, 2018, https://doi.org/10.1016/j.engstruct.2017.12.034
  3. The Out-of-Plane Bending Behavior of Brick Infill Walls Strengthened with Perforated Steel Plates vol.17, pp.4, 2016, https://doi.org/10.1016/j.riit.2016.11.002
  4. Strengthening of hollow brick infill walls with expanded steel plates vol.11, pp.5, 2016, https://doi.org/10.12989/eas.2016.11.5.887
  5. Behaviour of brick infill walls strengthened with expanded steel plates vol.14, pp.11, 2016, https://doi.org/10.1007/s10518-016-9927-2
  6. Delikli levhalarla güçlendirilmiş tuğla duvarların hesabı için öneriler vol.2018, pp.2018, 2018, https://doi.org/10.17341/gazimmfd.416422
  7. Discussion on “Seismic capacity of masonry infilled RC frame strengthening with expanded metal ferrocement” by A. Leeanansaksiri, P. Panyakapo, A. Ruangrassamee [Eng. Struct. 159 (2018) 11 vol.171, pp.None, 2014, https://doi.org/10.1016/j.engstruct.2018.03.014
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