Consideration of the non-linear behavior materials in the structural analysis of the church of Santa Ana in Sevilla by finit elements method

Description

The purpose of this paper is to bring the numerical models' structural behavior closer to the real behavior of the Church of Santa Ana in Seville, in Triana, through the development of high-definition geometric models that incorporate the non-linear materials' behavior. This church is presented as a unique case study due to the geometric complexity of its vaults and the influence on the structural behavior of the constructive solution of its passable roof. A geometrical model has been developed "as i"t, adapting the various constructive solutions to the real building. The result is a "high definition geometrical model". To define the materials a dynamic identification campaign has been carried out using OMA (Operational Modal Analysis) that has allowed us to adjust the mechanical properties of these materials in the numerical models. Modal shapes and frequencies of vibration similar to those obtained in the environmental vibration campaign has been obtained. A first linear analysis give us an approximation and a magnitude order of the displacement levels and the stress state, and let us to locate areas that exceed the admissible level stresses of the defined materials. With these results and analyzing in situ the displacement levels using photogrammetry, we decide to implement in the numerical analysis a constitutive model that contemplates the nonlinear behavior of these materials with Concrete Damage Plasticity model in Abaqus Cae. A non-linear analysis has been performed increasin the gravity factor until the structural collapse to determinate the structural safety factor.

Additional details