Numerical analysis of structural walls under cyclic loads
(2004) 13th World Conference on Earthquake Engineering (13WCEE) — Location: Vancouver, Canada (1.August.2004)
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- Abstract
- This paper studies analytical modeling of reinforced concrete (RC) structures subjected to cyclic loading. Special attention must be given to nonlinear material behavior when RC structures are subjected to cyclic loading. The material nonlinearity is due to characteristics such as: concrete orthotropic behavior, non symmetric material resistance (compression–tension), opening and closing cracks, and tension stiffening. In order to reliably predict the response of RC structures, the elements and the constitutive laws used in the analytical models must be able to properly account for these characteristics. In this paper, a three-dimensional generalization of a membrane constitutive law [1] is used to model concrete cyclic behavior. The constitutive law is a rotating crack model, which considers concrete orthotropic behavior in each phase of loading (loading, unloading and reloading). The model is able to estimate, with good accuracy, the response of concrete under generic cyclic loads, accounting for opening and closing cracks. The material law has been implemented in a finite element program with an explicit formulation. Using the program, cyclic response of a structural wall is calculated and compared with the corresponding experimental results and a good agreement is achieved.
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Citations
Sgambi, L., Catallo, L., & Sasani, M. (2004). Numerical analysis of structural walls under cyclic loads. Proceedings of 13th World Conference on Earthquake Engineering (13WCEE). Published. 13th World Conference on Earthquake Engineering (13WCEE), Vancouver, Canada. https://hdl.handle.net/2078.5/226832