| Title |
Finite Element Analysis of High-Strength Concrete Columns under Axial Loads |
| Authors |
Shin Hyeon-Jin ; Hwang Sun-Kyoung ; Han Byung-Chan ; Choi Chang-Sik ; Yun Hyun-Do ; Chung Soo-Young |
| Keywords |
High-Strength Concrete ; Columns ; Axial Loads ; Effective Confined Areas ; ABAQUS ; Finite Element Analysis |
| Abstract |
There are many advantages in using a high-strength concrete instead of a normal-strength concrete, especially the increase in compressive strength and the higher durability. However, due to the brittleness of high-strength concrete, many researchers studied to applied it to in structures. Many researches were focused on an experimental study. The concrete columns subjected to triaxial compressive stresses has to consider that the properties of columns are a nonlinear materials, an interaction of longitudinal bars and reinforcing steels, a variety of confined stresses about stress increment, a crack modeling, a buckling of longitudinal bars etc. The analysis difficulty of a concrete columns is presented. And then, for an active support of an experimental study, the analytical study carried out. A computer software was used to analyze a nonlinear finite element analysis of high-strength concrete columns under axial loads. The computer software used the ABAQUS/Standard 6.2. This study are to proposed a logical finite element models, the construction of an efficient finite element. The purpose of analytical study are a simplicity and efficiency of finite element models. The analytical models applied to the stress-strain curves of proposed equations. This curves were considered to the effects of the volumetric ratio and intervals of lateral ties, the distribution of the longitudinal steel around the core perimeter etc.. The analytical models were composed to confined and unconfined areas. A diagrams and charts illustrates the analytical and empirical results. Analytical results when applied to the proposed method yielded agreement with experimental results. |