Stiffness modeling of RC columns reinforced with plain rebars

Stiffness Modeling of Rc Columns Reinforced With Plain Rebars

“…In order to examine the stiffness properties of RC columns with plain rebars, a database including 47 RC columns was formed [16] in which 33 of the columns were continuously reinforced and the remaining columns were spliced with various splice lengths. The database consisted of monotonic and cyclic lateral force -tip deflection responses of rectangular RC columns that were tested in single curvature.…”

“…For the spliced steel model, the strain decomposition method was implemented in which the total strain was assumed to be decomposed into elongation and slip components. The strain components were calculated iteratively while satisfying equilibrium and bond stress equations concurrently [16]. The adopted constitutive relationship of bond stress and slip depends on maximum bond stress and maximum slip [17].…”

“…The splices were located at the bottom tension reinforcement with various splice lengths in the middle of the beams. Analytical calculations were based on standard section analysis carried out by the constitutive models of concrete [19] and spliced steel [16]. In the analyses, the analytically obtained beam moment capacities were compared with experimental moment capacities in order to acquire the maximum bond stress expression for plain rebars.…”