| Title |
Nonlinear Analysis using ABAQUS Software of Reinforced Concrete (RC) Beams Strengthened with Externally Post-tensioning Steel Rods |
| Authors |
Lee, Swoo-Heon ; Shin, Kyung-Jae ; Kim, Jin-Wook ; Lee, Hee-Du |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.2.11 |
| Keywords |
Post-tensioning ; Reinforced Concrete Beam ; Strengthening ; Steel Rod ; Externally Unbonded ; Nonlinear Analysis ; ABAQUS |
| Abstract |
Concrete is the well-used material in many architectural and civil structures. The behavior of concrete does exhibit a different characteristic in compression and tension, and it also shows an inelastic-nonlinear behavior. In addition, the concrete properties vary slightly depending on the environmental factor and manufacturer. These properties of concrete make the modeling or simulation of concrete material difficult. In reinforced concrete, particularly, there is a difficulty in bond-slip relationship between concrete and steel. However, in this paper, reserving remainder of these limits the finite element analysis for reinforced concrete beams through ABAQUS simulation has been carried out with some assumptions. Assumptions include the perfect bond of steel and concrete as well as the concrete damaged plasticity (CDP) in concrete property. There is a reasonable agreement between the experimental and numerical results, although the analytical strength and external rod deformation are slightly overestimated. The average and standard deviation between two results are 1.05 and 0.05, respectively. And the models and the computations lead to the evolution of fracture in bending beam. |