Comparative Study by Simulation of Interlocking and Ordinary Building Blocks under Static Loads

摘要

In order to recommend the use of the masonry of chipboards with eviscerated bed joints and hollow vertical joints, we did a comparative study using simulation of the behavior of walls with traditional blocs and those of the new model of blocs. Thus, using Solidworks, we built up walls of 2.40 m length and 1.30m height following strictly the real constraints of elevation. Using finite elements method, the meshing, loading and the observation of the behavior are done through CosmosWorks. We can define a study used by Solid-works and Cosmos Works interface, and introduce parameters of walls; the meshing is then done (here we have volumic elements with three noses); then the big rigidity matrix is defined; the equations are also defined and solved and results are presented in numerical and graphical form. Since that form of results is not easy to analyse, we passed them to MATLAB in order to have usual curves more easily to analyse. The difficulty here is based on the conception of geometry of piece which must have same constraints and dimensions corresponding exactly to the real model. The other difficulty is to define parameters to use for a heterogeneous material like masonry. Once those difficulties are solved, the logical follows fully the steps of finite elements method until the solution in terms of noses repartition constraints, displacements and deformations. Then, we simulated the behavior on vertical static load, vertical static load and horizontal applied load and composed loads (vertical and horizontal) which are real conditions generally known in masonry walls. It has been shown that the new kind of masonry has a better behavior than the traditional one when loaded in its plan; in contrary, the behavior is less when loaded in the perpendicular plan.