Strengthened flexural member models

Derivations for almost all analytical models for FRP strengthened flexural members are based on the typical schematic FBDs of Fig. 10.14. This particular case represents a differential segment of an FRP strengthened beam under uniformly distributed load, and the bending stiffness of the FRP laminate is assumed to be much smaller than that of the beam to be strengthened. Forces, moments and stresses acting on these basic FBDs reflect the individual assumptions preset for any analysis. The interfacial adhesive shear and normal stress are denoted by t x) and a(x), respectively. Equation [10.19] is the mathematical representation of the basic definition of shear stress t(x) in the adhesive layer, which is directly related to the difference in longitudinal deformation between the FRP laminate at its interface with the adhesive and the beam s soffit. 

Many closed-form analytical models for FRP strengthened flexural members exist in literature. Their potential for accurate prediction is also restricted due to the same above-mentioned assumptions. 

Strengthened Structural Members and Structures remfracement is neglected as it is considered to have a Analytical Assessment, Fig. 12 Simplified model fin small influence on post-jacketed flexural strength)... 

The proposed analytical model for predicting the flexural response of existing R/C members strengthened with concrete jacketing under... 

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