Abstract
This paper presents the results: stress and strain of bed joints mortar, masonry units, reinforcement bars and mechanism of cracking of numerical simulations using ANSYS of reinforced brick wall in the horizontal shear. Willam-Warnke (WW-5) failure criterion for mortar and bricks and Huber-Mises-Hencky (HMH) plasticity surface for bed joints steel reinforcement (steel smooth bars and truss type reinforcement) has been used. Coulomb-Mohr (CM) criterion in the contact surfaces of mortar and bricks have been used in the interface elements. Numerical calculations showed satisfactory convergence of research in the patterns of cracking; and the load-strain relationship was similar to the results of research with regard only to the cracking time. Destructive force numerical models Hu,cal correspond to the forces observed at the first cracks in the walls Hu,mv. Reduction of transverse and longitudinal deformation of mortar bed joints have been reported in the immediate vicinity of the bars, and the reduction of the main stress of the bricks is reported in the case of the use reinforcement.
Highlights
The FEM analysis allows tracing of the work of construction of the linear range, by cracking until its destruction
2) The method of structural analysis consisting of separating of the wall area and calculating it as a discrete micro model can describe the work of the wall until cracking the real wall
Cracking each time were created in the same areas of mortar - in the bed joint located at the corners of brick
Summary
The FEM analysis allows tracing of the work of construction of the linear range, by cracking until its destruction. Several different modeling methods in terms of the complexity of real masonry construction can be identified. Micromodel is the most complex method of modeling the masonry structure. Different non-linear behavior of brick, mortar and the reinforcement used in this case For macromodel and mezomodel characterized by lower complexity, the wall has the same mechanical properties of the periodic structure [18], these models may be used in the practical calculations of large masonry structures, not just parts of the wall, and whole buildings [1,9,10,2,3,5,6,11,12,13, 14]. Reinforcement of the macromodel walls are modeled as a linear elements, representing the reinforcement bars
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