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http://dx.doi.org/10.5000/EESK.2006.10.3.113

The Mechanism of Load Resistance and Deformability of Reinforced Concrete Coupling Beams  

Hong, Sung-Gul (서울대학교 공과대학 건축학과)
Jang, Sang-Ki (서울대학교 공과대학 건축학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.3, 2006 , pp. 113-123 More about this Journal
Abstract
An experimental investigation on the behavior of reinforced concrete coupling beams is presented. The test variables are the span-to-depth ratio, the ratio of flexural reinforcements and the ratio of shear rebars. The distribution of arch action and truss action which compose the mechanism of shear resistance is discussed. The increase of plastic deformation after yielding transforms the shear transfer by arch action into by truss action. This study proposes the deformation model for reinforced concrete coupling beams considering the bond slip of flexural reinforcement. The strain distribution model of shear reinforcements and flexural reinforcements based on test results is presented. The yielding of flexural reinforcements determines yielding states and the ultimate states of reinforced concrete coupling beam are defined as the ultimate compressive strain of struts and the degradation of compressive strength due to principal tensile strain of struts. The flexural-shear failure mechanism determines the ultimate state of RC coupling beams. It is expected that this model can be applied to displacement-based design methods.
Keywords
R/C coupling beams; shear strength; bond-slip; crack width; yield deformation; ultimate deformation; displacement-based design;
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  • Reference
1 Shakir, A. and Rogowsky, D. M., 'Evaluation of Ductility and Allowable moment redistribution in reinforced concrete structures,' Canadian journal of civil engineering, V.27, 2000, pp. 1286-1299   DOI
2 Galano, L., and Vignoli, A., 'Seismic Behavior of Short Coupling Beams with Different Reinforcement Layouts,' ACI structural Journal, V. 97, NO. 6, 2000, pp. 876-885
3 Marti, P., Alvarez, M., Kaufmann, W. and Sigrist, V., 'Tension Chord Model for Structural Concrete,' ETH, Zurich, Swiss, 1998
4 Macgregor, J. G., Reinforced Concrete, Prentice Hall, 1997, 939pp
5 Paulay, T., and Priestley, M. J. N., Seismic Design of Reinforced Concrete and Masonry Building, John Wiley and Sons, 1992, 744pp
6 Paulay, T., 'The Displacement Capacity of Reinforced Concrete Coupled Walls,' Engineering Structure, V. 24, NO. 9, 2002, pp. 1165-1175   DOI   ScienceOn
7 Paulay, T., 'Simulated Seismic Loading of Spandrel Beams,' Journal of the structural Division, American Society of Civil Engineers, V. 97, NO. ST9, 1971, pp. 2407-2419
8 Park, R. and Paulay, T., Reinforced Concrete Structures, John Wiley and Sons, 1972, 769pp
9 Paulay, T., 'Coupling Beams of Reinforced Concrete Shear Walls,' Journal of the structural Division, American Society of Civil Engineers, V. 97, NO. ST3, 1971, pp. 843-862
10 Paulay, T. and Santhakumar, A. R., 'Ductile Behavior of Coupled Shear Walls,' Journal of the structural Division, American Society of Civil Engineer, V. 102, NO. ST1, 1976, pp. 93-108
11 Tegos, I. A. and Penelis, G., 'Seismic Resistance of Short Columns and Coupling Beams Reinforced With Inclined Bars,' ACI structural Journal, V. 85, NO. 1, 1985, pp. 82-88
12 Theodosios, P. T., Marina, M. and Antonios, B., 'On the Behavior and Ductility of Reinforced Concrete Coupling Beams of Shear Walls,' ACI structural Journal, V. 93, NO. 6, 1996, pp. 711-720
13 Comite Euro-Intemational du Beton, CEB-FIP Model Code 1990 : design code, London: T. Telford, 1993, 437pp
14 Vecchio, F. J., and Collins, M. P., 'The Modified Compression-Field Theory for Reinforced Concrete Elements Subjected to Shear,' ACI structural Journal, V. 83, NO. 2, 1986, pp. 219-231
15 ACI Committee 318, Building Code Requirements for Structural Concrete and Commentary (ACI 318-02/318R-02), American Concrete Institute, Farmington Hills, Michigan, 2002
16 Canadian Standard Association, A23.3-04 Design of Concrete structures, CSA, 2004, 214pp
17 New Zealand Standard, NZS 3101:1995 concrete structures standard, NZS, 1999
18 Lee, S. G., and Hong, S. G., 'Strut-and-tie Models for Reinforced Concrete Interior Beam-Column Joints with Required Ductility,' the 5th SEEBUS, 2003
19 Lee, S. G., 'Deformation Dependent Strut-and-tie Model', PhD dissertation, Seoul National University, 2004
20 Priestley, M. J. N., Verma, R. and Xiao, Y., 'Seismic Shear Strength of Reinforced Concrete Column,' Journal of structural Engineering, American Society of Civil Engineer, V. 120, NO. 8, 1994, pp. 2310-2329   DOI   ScienceOn