TY - JOUR Y1 - 2014/// UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903551153&doi=10.4028%2fwww.scientific.net%2fAMM.567.469&partnerID=40&md5=523415032a2da0d79aab540589b3cd7a A1 - Yin, H. A1 - Wee, T. JF - Applied Mechanics and Materials VL - 567 N2 - This paper presents the analytical optimised truss model based on the principle of the minimum total strain energy theorem. The model was validated against 90 experimental data collected from the literature. The predicted shear strength in the analysis showed a very satisfactory correlation with the test results, with the average experimental/analytical failure load ratio of 1.09 and the coefficient of variation (C.O.V) of 14.1. Furthermore, a comparison between the accuracy of the proposed model and the current design guidelines was also demonstrated in this study. It was observed that the optimised truss model led to be more viable than the standard 45-deg truss model in the design guidelines. A large dispersion of the results was found in ACI 440 with the C.O.V as far as 31.4; whilst the TR 55 and fib 14 showed no significant difference with the C.O.V of 29.3 and 21.5, respectively. © (2014) Trans Tech Publications, Switzerland. KW - Concrete beams and girders; Design; Shear strength KW - Coefficient of variation; Failure load; Frp strengthening; Large dispersion; RC beams; Shear analysis; Strengthened RC beams; Truss model KW - Trusses ID - scholars5201 SN - 16609336 PB - Trans Tech Publications Ltd EP - 475 AV - none N1 - cited By 0 SP - 469 TI - Prediction the shear strength for FRP shear strengthened RC beams based on optimised truss models ER -