Simplified design and capacity calculations of shear strength in reinforced concrete membrane elements

A simplified method to predict the ultimate shear stress of reinforced concrete membrane elements

“…Regarding the overall comparison including the bulk of the experimental data, the proposed verification method has an average error which is closer to 1, the lowest coefficient of variation, a 5% percentile similar to all the other simplified methods, and greater accuracy in regions B (T-Y) and C (T-T). Moreover, the modes of failure registered in the experimental tests and the modes of failure predicted by the simplified method proposed in this paper, and also with the simplified methods by Kaufmann and Marti (1998) [11], Carbone, Giordano and Mancini (2001) [4], and Rahal (2008) [16] are compared in Table 3. The accuracy achieved with the proposed method is 87%, while with Kaufmann and Marti (1998) [11] is 84%, with Carbone, Giordano and Mancini (2001) [4] is 84% and with Rahal (2008) [16] is 90%.…”

“…Finally, the results in the literature for the 88 specimens (Table 1) with the proposed verification method have also been compared with the following simplified methods proposed by Kaufmann and Marti (1998) [11], Carbone, Giordano and Mancini (2001) [4], and Rahal (2008) [16]. Table 5 [8].…”

“…It distinguishes whether the reinforcement yields or not, and also whether the steel is in tension or in compression. Thus, the method proposed is more general than other simplified methods, such as those of Kaufmann and Marti (1998) [11], Carbone, Giordano and Mancini (2001) [4], or Rahal (2008) [16], as it covers the whole range of combinations of normal stresses in compression and tension.…”

“…Rahal (2000) [14] proposed an alternative simplified model based on MFCT to predict the strength and the mode of failure of membrane elements. In Rahal (2008) [16], the same author proposed another The aim of this paper is to present a new simplified model to take into account the failure behavior of membrane elements with orthogonal reinforcement. The model considers the softening effect of concrete compressive strength due to transverse tensile strains.…”

“…The following models have been considered major contributions to this aim: Vecchio and Collins (1986) [18], Hsu [8], [9], [10], Kaufmann and Marti (1998) [11], Vecchio (2000) [19] and (2001) [20], Carbone, Giordano and Mancini (2001) [4], Bentz, Vecchio and Collins (2006) [2], and Rahal (2008) [16] and (2010) [15]. The main features on which these models are based are summarized below.…”