| 英文摘要 |
A novel motion analysis method, the so-called vector form intrinsic finite element(VFIFE) method, was used to simulate the nonlinear behavior of reinforced concrete structures. Two-dimensional solid finite elements were used to model the concrete, and truss elements were adopted to model the steel reinforcements. An equivalent uniaxial strain model that can characterize the nonlinear monotonic loading behavior of concrete material by Darwin and Pecknold was adopted. The investigation first considered the development of a consistent material model that matches the analytical model made by Darwin and Pecknold. In the second part, the results of VFIFE method were compared with experimental results for the behavior of concrete under monotonic, uniaxial and biaxial loadings. Numerical examples demonstrated that the nonlinear responses of RC structures can be analyzed effectively by the proposed equivalent uniaxial strain model of concrete in two-dimensional solid finite elements and truss elements. |
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