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묶음 대각철근과 고성능 섬유보강 시멘트 복합체를 적용한 세장한 프리캐스트 연결보의 이력거동 평가

Cyclic Behavior of Precast Slender Coupling Beams with Bundled Diagonally Reinforcement and High-Performance Fiber Reinforced Cementitious Composite(HPFRCC)

  • 투고 : 2014.09.25
  • 심사 : 2014.11.19
  • 발행 : 2015.03.01

초록

Shear wall systems behave as individual wall because of openings like window and elevator cage. When coupling beams are installed in shear walls, they will have high strength and stiffness so that be less damaged by lateral loads like earthquake. However, coupling beam is difficult construction method. And arranging reinforcement of slender coupling beams are especially hard. It is because the details of coupling beam provided by ACI 318 are complex. In this paper, experiments were conducted using coupling beams with 3.5 aspect ratio to improve the details of slender coupling beams provided by ACI 318. Two specimens were proposed for this study. One specimen applied with bundled diagonally reinforcement only. Another specimen applied both bundled diagonally reinforcement and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) so that coupling beams have half of transverse reinforcement. All specimen were compared with a coupling beam designed according to ACI 318 and were evaluated with hysteretic behaviors. Test results showed that the performance of two specimen suggested in this study were similar to that of coupling beam designed according to current criteria. And it was considered that simplification of the details of reinforcement would be available if transverse reinforcement was reduced by using bundled diagonally reinforcement and HPFRCC.

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참고문헌

  1. Paulay T. Priestley MJN. Seismic design of reinforced concrete and masonry buildings, John Wiley and Sons, Inc., Newyork, pp. 417-418, 1992.
  2. Paulay T. Binney JR. Diagonally reinforced concrete beams of shear walls. ACI special publication 1974;42:579-598.
  3. ACI Committee 318, Building Code Requirements for Structural Concrete and Commentary (ACI 318-11). American Concrete Institute. 2011.
  4. Theodosios P, Tassios, Marina Moretti, Antonios Bezas. On the Behavior and ductility of reinforced concrete coupling beams of shear walls. ACI Structural Journal, 1996;93(6):711-719.
  5. Galano L, Vignoli A. Seismic behavior of short coupling beams with different reinforcement layouts. ACI Structural Journal. 2000;97(6): 876-885.
  6. Fortney PJ, Rassati GA, Sharooz BM, Investigation on effect of transverse reinforcement on performance of diagonally reinforced coupling beams. ACI Structural Journal. 2008;105(6):781-788.
  7. ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (318-08), American Concrete Institute, 2005, 2008.
  8. Canbolat BA, Parra-Montesinos GJ, Wight JK. Experimental study on seismic behavior of high-performance fiber-reinforced cement composite coupling beams. ACI Structural Journal. 2005;102(1):159-166.
  9. Monthian Setkit. Seismic behavior of slender coupling beams constructed with high-performance fiber-reinforced concrete. Ph.D of Civil Engineering in The University of Michigan, 2012.
  10. Lequesne RD, Wight JK, Parra-Montesinos GJ. Seismic detailing and behavior of coupled-wall systems with high-performance fiber-reinforced concrete. In: 9th National and 10th Canadian Conference on Earthquake Engineering Proceedings, Toronto, Canada, pp. 25-29, 2010.
  11. Pan A. Moehle JP. Lateral displacement ductility of reinforced concrete flat plates. ACI Structural Journal. 1989;86(3):250-258.