Optimized shear design equation for slender concrete beams reinforced with FRP bars and stirrups using Genetic Algorithm and reliability analysis

A practical method for determining shear crack induced deformation in FRP RC beams

“…[8][9][10][11][12][13], additional research has provided further insight into their deflection behaviour. For instance, several approaches available in the literature can predict accurately deflections of members subjected to flexure but only up to a service condition (e.g.…”

Evolutionary strategies as applied to shear strain effects in reinforced concrete beams

“…Once the readjust process is completed, the selection and crossing are performed (Eqs. (16) and (17), respectively) to achieve the proper size indicated by .…”

“…Among these internal forces, one of them is particularly damaging, the so-called shear force. There are several methods to analyze the shear strength of a reinforced and prestressed concrete beam [16,[18][19][20]. Among them, there is a family of methods based on the Compression Field Theories (CFT) which not only predict the ultimate (failure) shear load, but also provides the complete structural response (i.e., the variation of the internal shear force from an initial strain to the one for which the beam reaches its maximum capacity).…”

“…These approaches are usually based on techno-commercial decision parameters [13], as well as the specifications provided by international standards or practical design criteria [14,15]. Moreover, the high versatility of the evolutionary computation allows performing an specialized structural optimization (e.g., the shear strength of reinforced concrete members), using large experimental databases and evolving the standard formulation of the structural models based on a set of restrictions [16,17]. The present work goes forward in this sense and performs the experimental adjustment of the shear response of reinforced and prestressed concrete beams from the effect of the concrete tension stiffening at high strains; as justified at the following section, this also involves the numerical adjustment of a high non-linear model, for which the evolutionary computation represents a good strategy.…”

Nośność Na Ścinanie Zginanych Elementów Betonowych Zbrojonych Prętami Kompozytowymi FRP W Świetle Wybranych Procedur Obliczeniowych

“…przyjęto wpływ momentu zginającego w analizowanym przekroju jak w amerykańskiej normie [1] lub wpływ smukłości ścinania jak w pracy [50]. Modyfikacji istniejących procedur, mającej na celu uzyskanie jak najlepszej zgodności z wynikami badań, dokonano także w pracy [39] [7].…”