Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Study on Interior Flat Plate-Column Connections Subjected to Unbalanced Moment

불균등 휨모멘트를 받는 플랫 플레이트-기둥 접합부에 대한 해석연구

  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Flat plate structures under lateral load are susceptible to punching shear failure of the slab-column connection. To prevent such brittle failure, strength and ductility of the connection should be ensured. However, due to complexity in the behavior and difficulty in simulating the actual load and boundary conditions of the flat plate system, it is not easy to obtain reliable data regarding to the strength and ductility from the previous experimental studies. In the present study, a numerical study was performed for interior connections of continuous flat plate. For the purpose, a computer program for nonlinear FE analyses was developed, and the validity was verified by comparisons with the existing experimental results. Through the parametric studies, the variations of bending moment, shear, and torsional moment around the connection were investigated. Based on the findings of the numerical studies, the aspects which need to be improved in current design methods were discussed. The results of the present study will be used for developing a design method for the flat plate-column connection in the companion paper.

횡하중을 받는 플랫 플레이트 구조는 슬래브-기둥 접합부의 뚫림전단파괴에 대해 취약하며, 이러한 접합부의 취성적 파괴를 방지하기 위해 접합부의 강도 및 연성능력이 반드시 확보되어야 한다. 그러나 플랫 플레이트 시스템의 거동은 대단히 복잡하고 실제 하중재하방식과 경계조건을 정확히 실현하기는 매우 어려우므로, 이전의 실험연구로부터 강도 및 연성능력에 대한 신뢰할 만한 실험결과를 얻기가 쉽지 않다. 본 연구에서는 이러한 실험연구의 어려움을 보완하기 위하여 연속 플랫 플레이트의 내부 접합부에 대해 수치해석 연구를 수행하였다. 이를 위해 비선형 유한요소해석을 위한 컴퓨터 프로그램을 개발하였고, 기존의 실험결과와의 비교를 통해 그 유효성을 검증하였다. 변수연구를 통하여 접합부 주위의 휨모멘트, 전단력, 비틀림모멘트의 변화를 분석하였고, 분석결과에 근거해서 기존 설계방법에서 개선되어야 할 사항을 검토하였다. 본 연구결과는 후속논문에서 불균등 휨모멘트를 받는 접합부에 대한 설계방법을 개발하는데 사용될 것이다.

Keywords

References

  1. 박홍근, 엄태성, "비선형 시간이력해석에 의한 벽식 아파트의 내진 안전성 검토," 지진공학회 발표논문, 2001. 4.
  2. 한국콘크리트학회, 대한건축학회, "콘크리트구조 설계기준," 1999.
  3. 대한건축학회, "건축물 하중기준 및 해설," 2000년.
  4. American Concrete Institute, "Building Code Requirements for Structural Concrete," ACI 318-02. pp.184-186, pp.213-232.
  5. ACI-ASCE Committee 352, "Recommendations for Design of Reinforced Concrete Slab-Column Connections in Monolithic Reinforced Concrete Structures," ACI Structural Journal, Vol. 85, No. 6, November-December, 1988, pp.675-696.
  6. Moehle, J. P., Kreger, M. E., and Leon, R., "Background to Recommendations for Design of Reinforced Concrete Slab-Column Connections," ACI Structural Journal, V. 85, No. 6, November-December, 1988, pp.636-644.
  7. Farhey, D. N., Adin, M. A, and Yankelevsky, D. Z., "Flat Slab-Column Subassemblages under Lateral Loading," Journal of Structural Engineering, ASCE, Vol. 119, No. 6, June, 1993, pp.1903-1916. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:6(1903)
  8. Ghali, A, Elmasri, M. Z., and Diler, W., "Punching of Flat Plates under Static and Dynamic Horizontal Force," ACI Journal, October, 1976, pp.566 -572.
  9. Luo, Y. H. and Durrani, A. J., "Equivalent Beam Model for Flat-Slab Buildings-Part1: Interior Connections," ACI Structural Journal, Vol. 92, No. 1, January-February, 1995, pp.115-124.
  10. Pan, Al. D., and Moehle, J. P., "An Experimental Study of Slab-Column Connections," ACI Structural Journal, Vol. 89, No.6, November-December, 1992, pp.626-638.
  11. Park, H. and Klingner, R. E., "Nonlinear Analysis of RC Members Using Plasticity with Multiple Failure Criteria," Journal of Structural Engineering, ASCE, Vol. 123, No.5, 1997, pp. 643-651. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:5(643)
  12. Robertson, N. and Durrani, A. J., "Gravity Load Effect on Seismic Behavior of Interior Slab-Column Connections," ACI Structural Journal, Vol. 89, No.1, January-February, 1992, pp.37-45.

Cited by

  1. Strength of Interior Plat Plate-Column Connections Subjected to Unbalanced Moment vol.14, pp.6, 2002, https://doi.org/10.4334/JKCI.2002.14.6.961