MODELING OF CRACKING IN REINFORCED CONCRETE STRUCTURES BASED ON DEFORMATION CALCULATION MODEL
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Abstract
The article proposes a method for modeling crack formation in reinforced concrete structures, based on the integration of a nonlinear deformation model of a reinforced concrete element and the finite element method. Within the framework of such integration, it becomes possible not only to take into account the change in the stiffness of finite elements under the action of the load and the corresponding redistribution of internal forces, but also to take into account the redistribution of stresses over the sections, the change in the field of rotation of the principal stresses in the process of crack propagation. The paper proposes a method of combined strategies that makes it possible to effectively solve the system of equations of equilibrium and compatibility of deformations of the design model.
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