A constitutive model for predicting the lateral strain of confined concrete

Effect Of Pre-Tensioned Level on Axial Stress-Strain Behaviour of Confined Concrete: A Review

“…Similar observations were reported in the experimental investigation conducted by Lee et al [12]. In [26], it was believe that the magnitude of confining pressure decreases lateral strain by delaying the formation of micro-crack as illustrated in Fig. 3.…”

Finite element analysis of axially loaded FRP-confined rectangular concrete columns

“…It should be noted that similar observations about the effect of corner roundness and aspect ratio on the behaviours of axially loaded FRP-confined rectangular concrete columns are also discussed in Mostofinejad et al's research [32] as well, while the current research is more comprehensive and detailed on the distribution of axial stress across the section. Although Dong et al's [18] axial strain-lateral strain relation, Menétrey and Willam's triaxial failure surface [21] and Attard and Setange's axial stress-strain relation [22] have been used in the constitutive modelling of concrete, it should be noted that each of these components adopted in the FE model can be replaced by other available alternatives to further enhance the performance of the FE procedure.…”

“…The lateral strains are dependent on the axial strain, confining stress and concrete strength, which have not been treated directly in an explicit manner in traditional plasticity or damage models. Dong et al [18] have recently developed a constitutive model for predicting the lateral strains of confined concrete by analysing published test 20 MPa to higher than 100 MPa.…”

“…Dong et al's [18] lateral strain-axial strain constitutive model, which has been well verified in previous studies on axially loaded FRP-confined circular concrete columns [19,20], will be applied explicitly to the FE analysis so that with an input of prescribed axial deformation the biaxial confining stresses can be computed through iterations. The axial stress of each concrete element can be determined based on the biaxial confining stresses.…”

Experimental investigation on the compressive behavior of short‐term preloaded carbon fiber reinforced polymer‐confined concrete columns

“…A large number of experimental studies were performed to investigate the benefits conferred by the aforementioned reinforcement system in both cases of plain and/or RC so that a very extensive database of experimental data is available in the literature and the experimental behavior of the confined concrete can be considered widely analyzed. Moreover, many analytical formulations are able to reproduce the stress–strain behavior of confined concrete under monotonic, cyclic, and eccentric loads . However, almost the totality of the design formulations are obtained on the basis of experimental observations of test in which the common test procedure involve specimens reinforced under zero stress–strain conditions, without taking into account the effect of service loads at the time of the application of fiber reinforced polymer (FRP) bandage.…”