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An Experimental Study on Strength and Ductility of Masonry Buildings Retrofitted by Metal Connectors

조적조 건물의 연결철물보강에 따른 내력 및 연성에 관한 실험적 연구

  • 박병태 (서울시립대학교 건축공학과) ;
  • 권기혁 (서울시립대학교 건축공학과)
  • Received : 2014.08.11
  • Accepted : 2015.02.25
  • Published : 2015.05.30

Abstract

Building using masonry accounts for most of the smaller houses in Korea but due to brittle behavior and low ductility the frequency of usage has decreased in recent years. Despite this, this form of building has been gaining attention overseas for its low cost in construction and environment-friendliness of the materials. As such, many studies are being conducted to resolve the disadvantages in structure. This study produced an specimen for masonry-filled wall and the intersection to confirm the difference in structural movement depends on the existence or lack of expansion joint and verified the reinforcement effect from inserting a connecting steel item (steel plate, stainless steel twist bar). The experiment results show that the specimen with a steel plate inserted saw an increase in durability and an improvement in the strength of the specimens, while the specimen that had stainless steel twists bar inserted saw an increase in ductility that did not cause brittle failure, indicating that the reinforcement effects of inserting a connecting steel item are effective.

조적조 건축물은 국내 소규모 주택의 많은 부분을 차지하지만 취성적 거동 및 낮은 연성능력으로 현재에는 사용빈도가 많이 낮아졌다. 그럼에도 불구하고 조적조 건축물의 낮은 건축비, 재료의 친환경성은 국외를 중심으로 새롭게 각광 받으면서 구조적 단점을 해결하고자 많은 연구가 진행 중이다. 본 연구에서는 조적벽체 및 교차부 실험체를 제작하여 신축줄눈 유 무에 따른 구조적 거동의 차이를 확인하고, 연결철물 (스틸플레이트, 스테인리스 트위스트바) 삽입에 따른 보강효과를 검증하였다. 실험결과를 통해 스틸플레이트를 삽입한 실험체는 내력이 증가되어 실험체의 강성이 향상되었으며, 스테인리스 트위스트바를 삽입한 실험체는 연성능력이 향상되어 취성파괴가 발생하지 않아, 연결철물 삽입에 따른 보강효과는 우수한 것으로 나타났다.

Keywords

References

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Cited by

  1. Experimental Study on the Seismic Capacity of Anchored Brick Veneer on Nonstructural Masonry Walls vol.18, pp.7, 2018, https://doi.org/10.9798/KOSHAM.2018.18.7.21
  2. 조적벽체의 형상비에 따른 접착형 보강재의 보강효과에 관한 실험적 연구 vol.21, pp.4, 2017, https://doi.org/10.11112/jksmi.2017.21.4.013