Nonlinear Analysis for RC Beams Strengthened by Externally Bonded Steel Plates with Bond-Slip

Abstract:

The RC beams strengthened by externally bonded steel plates are regarded as composite beams which consist of steel plates and reinforced concrete with bond-slip. Based on the deformation compatibility relationship between steel plates and reinforced concrete, the constitutive relationship which can reflect the mechanical properties of steel plates and reinforced concrete and the bond-slip constitutive law, a nonlinear differential equation for the beam, expressed in the form of the tensile force of steel plates, is derived. A nonlinear analytical solution under the double concentrated load of the RC beams strengthened by externally bonded steel plates is obtained. By which a coordination coefficient in the form of the characteristic value of the beam is deduced. By using the coordination coefficient, a practical nonlinear analysis method, which can exactly reflect the bearing capacity and deformation of the beam is established.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 387-391
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.387
• Online since: January 2015
• Authors: T.B. Liu*, Jian Chang Zhao, S.W. Liu
• Keywords: Bonded Steel, Bond-Slip, Nonlinear Analysis, RC Beam, Strengthen

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