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Numerical Prediction of Ultimate Strength of RC Beams and Slabs with a Patch by p-Version Nonlinear Finite Element Modeling and Experimental Verification  

Ahn Jae-Seok (영남대학교 공업기술연구소)
Park Jin-Hwan (영남대학교 공업기술연구소)
Woo Kwang-Sung (영남대학교 토목공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.17, no.4, 2004 , pp. 375-387 More about this Journal
Abstract
A new finite element model will be presented to analyze the nonlinear behavior of RC beams and slabs strengthened by a patch repair. The numerical approach is based on the p-version degenerate shell element including theory of anisotropic laminated composites, theory of materially and geometrically nonlinear plates. In the nonlinear formulation of this model, the total Lagrangian formulation is adopted with large deflections and moderate rotations being accounted for in the sense of von Karman hypothesis. The material model is based on hardening rule, crushing condition, plate-end debonding strength model and so on. The Gauss-Lobatto numerical quadrature is applied to calculate the stresses at the nodal points instead of Gauss points. The validity of the proposed p-version nonlinear finite element model is demonstrated through the load-deflection curves, the ultimate loads, and the failure modes of RC beams or slabs bonded with steel plates or FRP plates compared with available result of experiment and other numerical methods.
Keywords
p-version nonlinear finite element mode; Gauss-Lobatto integration; anisotropic laminated com­posites; plate-end interfacial debonding model;
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  • Reference
1 Hinton, E., Owen, D.R.J., 'Finite element software for plates and shells', Pineridge Press Limited, Swansea U.K., 1984
2 Maekawa, K., Pimanmas, A., Okamura, H., 'Nonlinear mechanics of reinforced concrete', Spon Press, London, 2003
3 Teng, J.G., Chen, J.F., Smith, S.T., Lam, L., 'FRP strengthened RC structures', John Wiley & Sons Ltd., 2002
4 Smith, S.T., Teng, J.G., 'FRP-strengthened RC beams I: review of debonding strength models', Engineering Structures, Vol.24, 2002, pp.385-395
5 Woo, K.S., Hong, C.H. and Basu, P.K. 'Materially and geometrically nonlinear analysis of laminated anisotropic plates by p-version of FEM', Computers & Structures, Vol.81, 2003, pp.1653-1662
6 Spencer, J., 'Sherwin, Spectral/hp Element Methods for CFD', Oxford University Press, New York, 1999
7 Dey, S., Shephard, M.S., Flaherty, J.E., 'Geometry representation issues associated with p-version finite element computations', Computer Methods in Applied Mechanics and Engineering, Vol.150, 1997, pp.39-55
8 우광성, 박진환, 홍종현, 'p-version 유한요소법에 의한 철근콘크리트 슬래브의 극한하중 산정', 대한토목학회논문집. 제23권, 제1A호, 2003, pp.103-111
9 Owen, D.R.J., Hinton, E., 'Finite elements in plasticity : theory and practice', Pineridge Press Limited, Swansea U.K., 1980
10 Ritchie, P.A., Thomas, D.A., Lu, Le-Wu and Connelly, G.M. 'External reinforcement of concrete beams using fiber reinforced plastics', ACI Structtural Journal, Vol.88, No.4, 1991. pp.490-500
11 Jansze, W., 'Strengthening of reinforced concrete members in bending by externally bonded steel plates', Delft University of Technology, 1997
12 Zhang, J.W.. Teng, J.G., Wong, Y.L., Lu, Z.T., 'Behavior of two-way RC externally bonded with steel plate', ASCE Journal of Structural Engineering, Vol.127 , No.4, 2001. pp.390-397
13 Edgar. N.B., Surana. K.S., 'On the conditioning number and the selection criteria for p-version approximation functions', Computers & Structures, Vol. 60, 1996. pp.521-530