Shear strengthReinforced concrete beamLinear genetic programmingDesign equationa b s t r a c tA new design equation is proposed for the prediction of shear strength of reinforced concrete (RC) beamswithout stirrups using an innovative linear genetic programming methodology. The shear strength wasformulated in terms of several effective parameters such as shear span to depth ratio, concrete cylinderstrength at date of testing, amount of longitudinal reinforcement, lever arm, and maximum specifiedsize of coarse aggregate. A comprehensive database containing 1938 experimental test results for theRC beams was gathered from the literature to develop the model. The performance and validity of themodel were further tested using several criteria. An efficient strategy was considered to guarantee thegeneralization of the proposed design equation. For more verification, sensitivity and parametric analysiswere conducted. The results indicate that the derived model is an effective tool for the estimation of theshear capacity of members without stirrups (R = 0.921). The prediction performance of the proposedmodel was found to be better than that of several existing buildings codes.
کلید واژگان :Shear strengthReinforced concrete beamLinear genetic programmingDesign equationa
ارزش ریالی : 600000 ریال
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