DOI QR코드

DOI QR Code

드롭패널을 이용한 철근콘크리트 연속보의 처짐 감소 효과에 대한 연구

A Study on the Deflection Reduction of RC Continuous Girders with a Drop Panel

  • 투고 : 2013.10.30
  • 심사 : 2014.05.08
  • 발행 : 2014.05.30

초록

In this study, a double beam system was proposed to reduce the deflection of reinforced concrete beams. The system consists of two small size beams and a drop panel. The proposed method took into account the effect of a drop panel placed at the center of the continuous beam. Because the drop panel increases the negative moment of the beam, but decreases the positive moment of the beam, it is expected that the drop panel might reduce the deflection of continuous beams. Five reinforced concrete continuous beams were tested. The main parameters of specimens were the length and width of drop panel. Test results indicated that the drop panel reduced the deflection of continuous beams. The deflection of the continuous beams with a drop panel was 24. 5 percent less than that of the beams without a drop panel. The deflection of continuous beams was decreased with the increase of the length of drop panel.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

참고문헌

  1. Bradford, M.A. and Gilbert, R. I., "Composite beams with partial interaction under sustained loads", Journal of Structural Engineering, ASCE, Vol. 118, No. 7, 1992, p.p.1871-1883. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:7(1871)
  2. Oechlers, D.J. and Bradford, M.A., "Elementary Behavior of Composite Steel and Composite Structural Members", Butte rworth-Heinemann, 1999, 259pp.
  3. Lam, D., Elliott, K.S., and Nethercot, D.A., "Experiments on Composite Steel Beams with Precast Concrete Hollow Core Floor Slabs", Proceedings of Institute of Civil Engineers Str uctures and Buildings, Vol.140, 2000, p.p.127-138. https://doi.org/10.1680/stbu.2000.140.2.127
  4. Elliott, K.S., "Precast Concrete Structures", Butterworth-Heinemann, 2002, 375pp.
  5. 한국콘크리트학회, 콘크리트 구조기준해설, 한국콘크리트학회, 2012, 700pp.
  6. Branson D.E., "Instantaneous and Time- Dependent Deflecti on of simple and Continuos Reinforced Concrete Beams", HPR Report, No. 7 Part 1, Alabama Highway Department/U. S. Bureau of Public Roads, Aug. 1963(1965):1-78.
  7. Vecchio, F. J., "Disturbed stress field model for reinforced concrete: Formulation", Journal of Structural Engeering, ASCE, V. 126, No. 9, Sep. 2000, p.p. 1070-1077.
  8. Vecchio, F. J., and Collins, M. P., "The Modified Compressi on Field Theory for Reinforced Concrete Elements Subjecte d to Shear", ACI Journal, V. 83, No. 2, Mar. 1986, p.p. 219 -231.
  9. Kim, S.-W., and Vecchio, F. J., "Modeling of Shear-Critical Reinforced Concrete Structures Repaired with Fiber-Reinfor ced Polymer Composites", Journal of Structural Engineering, ASCE, V. 134, No. 8, Aug. 2008, p.p. 1288-1299. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:8(1288)
  10. Wong, P. S., and Vecchio, F. J., "VecTor2 and FormWork s User's Manual", Technical Report, Dept. of Civil Engine ering, University of Toronto, Toronto, Canada, 2002, (http: //www.civ.utoronto.ca/vector/).
  11. Kent, D. C. and Park, R., "Flexural Members with Confined Concrete,"ASCE Journal of the Structural Division, Vol. 97, No. ST7, Proc. Paper 8243, 1981, p.p. 1341-1360.
  12. Seckin, M., "Hysteretic Behaviour of Cast-in-Place Exterior Beam-Column-Slab Subassemblies", Ph.D. Thesis, Department of Civil Engineering, University of Toronto, 1981, 266 pp.