u2.06.10 Carrying out a building structure study under seismic loading

Summary:

The purpose of this document is to provide advice for carrying out studies of civil engineering under seismic loading. It presents the use of the tools for modeling reinforced concrete structures under earthquakes available in Code_Aster. We will consult beforehand u2.03.07.

First of all, we recall the methods of calculation in nonlinear transient dynamics. The finite element models and the concrete and steel behavior models available are then described. Finally, the various steps to be carried out in the context of a dynamic non-linear seismic study (preliminary studies, calculation resolution and post-treatment) are presented.

• 1. Introduction
• 2. Transient nonlinear dynamic calculation methods
  • 2.1. Operator DYNA_NON_LINE
  • 2.2. Choice of the temporal integration scheme
  • 2.3. Choice of the calculation time step
• 3. Choice of finite element modeling
  • 3.1. Introduction
  • 3.2. Description of local modeling (massive elements)
  • 3.3. Description of multi-layer shell semi-global modeling
  • 3.4. Description of the semi-global multifiber beam modeling
  • 3.5. Global modeling description
  • 3.6. Link modeling
  • 3.7. Other structural elements that can be modelled
  • 3.8. What type of modeling should be adopted?
• 4. Choice of behavior model
  • 4.1. Introduction
  • 4.2. De Borst algorithm
  • 4.3. Description of steel behavior models
  • 4.4. Description of concrete behavior models
  • 4.5. What type of behavior model should you adopt?
• 5. Problem data
  • 5.1. Meshing
  • 5.2. Initial conditions
  • 5.3. Boundary conditions
  • 5.4. Seismic loading
  • 5.5. Depreciation
• 6. Analyses prior to nonlinear transient dynamic calculation
  • 6.1. Mass analysis
  • 6.2. Modal analysis
  • 6.3. Dynamic transient linear elastic calculation
  • 6.4. Other analyses
• 7. Nonlinear transient dynamic calculation resolution
  • 7.1. Introduction
  • 7.2. Support for the convergence of computation
  • 7.3. Synchronization of calculations
• 8. Post-treatment
  • 8.1. Analysis of the overall behavior of the structure
  • 8.2. Analysis of the local behavior of the structure
• 9. Existing case tests and studies
  • 9.1. Code_Aster test cases
  • 9.2. Examples of studies carried out
• 10. Conclusions
• 11. Bibliography
• 12. Description of document versions