Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

Out-of-Plane Seismic Performance of Outer Masonry Walls Strengthened by Steel-Bar Truss Systems

강봉 트러스 시스템으로 보강된 조적 외벽체의 면외 거동 평가

  • Lee, Hye-Ji (Dept. of Architecture Engineering, Kyonggi University) ;
  • Kim, Sanghee (Dept. of Architecture Engineering, Kyonggi University) ;
  • Yang, Keun-Hyeok (Dept. of Architecture Engineering, Kyonggi University)
  • Received : 2022.03.03
  • Accepted : 2022.05.10
  • Published : 2022.10.30
⟨ Previous Next ⟩

Abstract

In this study, the out-of-plane seismic performance of outer masonry walls strengthened on one side with a steel-bar truss system was experimentally evaluated. There were three C-shaped specimens with variables that had the presence or absence of reinforcement on both intersection walls and the door-size opening. The steel-bar truss system used for reinforcement was installed on the inner side of the main outer wall and both intersecting walls. The peak strength in the positive direction of the specimen reinforcement on both the main and intersecting walls was approximately 2.3 times higher than that of the other specimen that was reinforced in only the main wall; the two specimens had similar peak strengths in the negative direction. The peak strength of the specimen with a door-size opening was similar to the specimen without a door-size opening. Therefore, it was determined that the seismic performance of the masonry wall can be greatly improved by reinforcing the main and intersecting walls together rather than reinforcing the main wall exclusively.

Keywords

Acknowledgement

이 연구는 2021년 정부(행정안전부)의 재원으로 국립재난안전연구원의 재난안전기술사업화(과제번호: No. 2021- MOIS32-042-01010100-2022)의 연구비 지원 및 2022년 경기대학교 대학원 연구원장학생 장학금 지원에 의한 결과의 일부이며, 이에 감사드립니다.

References

  1. AIK (2018). Site Inspection and Damage Investigation of Buildings by Earthquakes in Gyeongju and Pohang. 1st ed., Seoul, Architectural Institute of Korea, 67-70. (in Korean)
  2. ASTM C 1314 (2007). Standard Test Method for Compressive Strength of Masonry Prisms. Pennsylvania, American Society for Testing and Materials.
  3. ASTM E 519 (2003). Standard Test Method for Diagonal Tension(Shear) in Masonry Assemblages. Pennsylvania, American Society for Testing and Materials.
  4. Donduren, M. S., Kanit, R., Kalkan, I., & Gencel, O. (2016). Influence of special plaster on the out-of-plane behavior of masonry walls. Earthquakes and Structures, 10(4), 769-788. https://doi.org/10.12989/EAS.2016.10.4.769
  5. Ghobarah, A., & Galal, K. E. M. (2004). Out-of-plane strengthening of unreinforced masonry walls with openings. Journal of Composites for Construction, 8(4), 298-305. https://doi.org/10.1061/(ASCE)1090-0268(2004)8:4(298)
  6. Hwang, S. H., Kim, S., & Yang, K. H. (2021). Out-of-plane behaviour of masonry wall structures strengthened with steel-bar truss system. Proceedings of the Institution of Civil Engineers-Structures and Buildings, published online ahead of an issue.
  7. Hwang, S. H., Kim, S., & Yang, K. H. (2020). In-plane seismic performance of masonry wall retrofitted with prestressed steel-bar truss. Earthquakes and Structures, 19(6), 459-469. https://doi.org/10.12989/EAS.2020.19.6.459
  8. Ismail, N., Laursen, P. T., Schultz, A. E., & Ingham, J. M. (2011). Cyclic out-of-plane behaviour of post tensioned clay brick masonry. The Eleventh North American Masonry Conference.
  9. KCS 41 34 02 (2018). Brick Construction. Seoul, Korea Construction Standard Center. (in Korean)
  10. KCS 41 46 02 (2018). Cement Mortar Coat. Seoul, Korea Construction Standard Center. (in Korean)
  11. KS F 2438 (2017). Standard Test Method for Static Modulus of Elasticity and Poisson's Ratio in Compression of Cylindrical Concrete Specimens. Seoul, Korea Agency for Technology and Standards. (in Korean)
  12. KS F 4004 (2013). Concrete Bricks. Seoul, Korea Agency for Technology and Standards. (in Korean)
  13. Lee, J. H. (2005). Seismic capacity and seismic retrofitting of low rise buildings unreinforced masonry, Brick-infilled RC frame and steel slit damper retrofitted RC frame. Kwangwoon University, Ph.D. Thesis. (in Korean)
  14. NIDP (2009). Study on Seismic Retrofitting Techniques for Unreinforced Masonry Buildings. Seoul, National Emergency Management Agency. (in Korean)
  15. Yang, W. J., Lee, W. H., & Oh, S. H. (2012). Development of seismic retrofit technique and performance evaluation for masonry wall. Korean Society of Hazard Mitigation Conference Proceedings, 160. (in Korean)