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http://dx.doi.org/10.4334/JKCI.2012.24.2.185

Estimation of Shear Strength of Beam-Column Joints  

Choi, Ha-Young (Dept. of Architectural Engineering, Sungkyunkwan University)
Kim, Byoung-Il (Dept. of Architectural Engineering, Sungkyunkwan University)
Lee, Jung-Yoon (Dept. of Architectural Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korea Concrete Institute / v.24, no.2, 2012 , pp. 185-193 More about this Journal
Abstract
In this study, an estimation equation was proposed to predict the shear strength of RC interior beam-column connections. The proposed equation considered the effect of both truss and arch mechanisms, while the existing equations in the ACI and AIJ design codes consider only arch mechanism. In addition, the proposed equation estimates the shear strength of RC joints by considering the contribution of the vertical and horizontal steel bars on the effective compressive strength of concrete. The shear strength of RC joints calculated by the proposed equation was compared with the test results of 54 RC joints, which failed in shear before plastic hinges developed at the end of the adjacent beams. The comparison study showed that the proposed equation estimated the strength of the 54 specimens with a mean value of 1.14 and the coefficient of variation of 20%. The proposed equation provides improved prediction compared to those obtained from the equations in the ACI and AIJ design codes.
Keywords
beam-column joint; shear strength; J-failure; reinforcement steel; softening effect;
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  • Reference
1 Hatamoto, H., et al., 30階建鐵筋コソクリ一ト造超高層建物の耐震設計, Architectural Institute of Japan, 日本建築學會大會學術講演梗槪集, 1961, pp. 91-92.
2 Danaka, N., et el, "RC造內部梁柱接合部への柱端からの鉛直方向力に關すゐ硏究," コソクリ一ト工學年次論文集, Vol. 28, No. 2, 2006, pp. 289-294.
3 Teraoka, M., Kanoh, Y., Sasaki, S., and Hayashi, K., "An Stimation of Ductility in Interior Beam-Column Subassemblages of Reinforced Concrete Frames," The Society of Materials Science, Vol. 45, No. 9, 1996, pp. 1033-1041.   DOI   ScienceOn
4 Watanabe, K., Abe, K., Murakawa, J., and Noguchi, H., "Strength and Deformation of Reinforced Concrete Interior Beam-Column Joints," Transactions of the Japan Concrete Institute, Vol. 10, 1988, pp. 183-188.
5 NZS 3101: Part 1, Concrete Structures Standard (NZS 3101:1995), Standard Association of New Zealand, Willington, New Zealand, 1995, pp. 105-111.
6 Nielsen, M. P. and Braestrup, M. W., "Plastic Shear Strength of Reinforced Concrete Beams," Bygningsstatiske Meddelelser, Denmark, Vol. 46, No. 3, 1975, pp. 61-69.
7 Paulay, T. and Priestley, M. J. N., Seismic Design of Reinforced Concrete and Masonry Buildings, Jogn Wiley and Sons, New York, 1992, pp. 250-263.
8 Hsu, T. T. C., "Softened Truss Model Theory for Shear and Torsion," ACI Structural Journal, Vol. 85, No. 6, 1988, pp. 624-635.
9 Vecchio, F. J. and Collins, M. P., "The Modified Compression-Field Theory for Reinforced Concrete Elements Subjected to Shear," ACI Structural Journal, Vol. 83, No. 2, 1989, pp. 219-231.
10 신도로교해설 콘크리트편, Ver. 1.0, 2010, pp. 107-119(국토해양부 심의중).
11 Hayashi, K. and Teraoka, M., "鐵筋コソクリ一ト造十字形柱.はり接合部の力學性狀に關すゐ硏究," Architectural Institute of Japan, 日本建築學會大會學術講演梗槪集, 1961, pp. 117-118.
12 Oka, K. and Siohara, H., "Tests of High-Strength Concrete Inerior Beam-Column Joint Subassemblages," Earthquake Engineering, 1992, pp. 3211-3217.
13 Meinheit, D. F. and Jirsa, J. O., "Shear Strength of R/C Beam-Co;umn Connections," Proceedings of the ASCE, Vol. 107, No. ST11, 1981, pp. 2227-2244.
14 Noguchi, H. and Kasiwazaki, T., "Experimental Studies on Shear Performances of RC Interior Column-Beam Joints with High-Strength Materials," Earthquake Engineering, 10th World Conference, 1992, pp. 3163-3168.
15 Fujii, S. and Morita, S., "Comparison between Interior and Exterior RC Beam-Column Joint Behavior," ACI SP-123, 1991, pp. 145-166.
16 Architectural Institute of Japan, AIJ Standard for Structural Calculation of Reinforced Concrete Structures, Revised 2010, pp. 179-190.
17 Kawasaki, K., et al., "高强度コソクリ一トを用いた內柱梁接合部に關すゐ實驗的硏究," Architectural Institute of Japan, 日本建築學會大會學術講演梗槪集, 1991, pp. 579-580.
18 Joint ACI-ASCE Committee 352, Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures, American Concrete Institute, Farmington Hills, Michigan, 2003, pp. 1-16.