# Limit Plastic Analysis of a Structural Concrete Block Wall

## Palavras-chave:

structural masonry, structural concrete block, hybrid finite elements, plastic boundary analysis## Resumo

At this paper, it is searched the maximum collapse load of a structural concrete block wall. Simulations

are made considering the removal of resistant material, such as the installation of a door or openings motivated by

modifications at the architectural project. A mathematical programming using the Coulomb and Von Mises criteria

is used at the limit plastic analysis assuming the basic hypothesis of associated plasticity. It is used a polyhedral

representation of the yielding surface studying the convergence of the results in relation of the chosen number of

planes at each representation. It is used the hybrid finite elements formulation. Numeric examples are shown for

the structural concrete block wall case, considering different finite elements meshes and the obtained results are

compared with those of the analytical analysis that exists at the criteria adopted by the Brazilian concrete block

structure project Standard - NBR 10837. Keywords: structural concrete block, hybrid finite elements, limit plastic

analysis. Theme: research and testing.