Determination of rebar effect on dynamic characteristics and dynamic behavior of reinforced concrete bridges

İngilizce (OpenAlex)

In this study, it is aimed to be searched the effect of the rebar on the structural behavior of reinforced concrete bridges formed with the finite element method.For this purpose, the numerical model of the bridge with known dimensions, material properties and rebar configuration was modeled using ANSYS finite element analysis program.In the first model, it was thought that the bridge was constructed using only concrete, rebar was not taken into consideration.Then the same bridge was modelled without changing the boundary conditions as if it was built by reinforced concrete material in which rebar and concrete were together and the modal analyses were carried out on this model again.The dynamic characteristics of the two different bridge models were determined using numerical methods and the effect of the rebar on these characteristics was presented by comparing them with each other.When the results obtained were examined, it was found that the rebar had no significant effect on the modal behavior of the bridge.Thus, not taking into account the rebar will provide a great convenience during the modeling stage.In addition, linear and nonlinear dynamic analyzes were performed on the reinforced and unreinforced finite element models of the bridge using the effective earthquake acceleration record of the Erzincan earthquake of 1992 and structural behavior was evaluated.The results are presented in comparison with the graphs and tables in this paper.