Regression dependences in bending reinforced concrete beam with cracks
Nuguzhinov Z. Khabidolda O. Bakirov Z. Zholmagambetov S. Kurokhtin A. Tokanov D.
1 January 2022De Gruyter Open Ltd
Curved and Layered Structures
2022#9Issue 1442 - 451 pp.
The work is devoted to determining the stress parameters of flexible reinforced concrete beams with cracks. The problem is solved using LIRA-SAPR using beam finite elements, taking into account the nonlinear relationship between deformation and stress in concrete. In the course of solution, a step-by-step loading method is used with the use of an iterative process at each step. To obtain the dependence of the stress parameters on varied factors, a rational planning matrix for a multifactor computer simulation was compiled to determine the stress parameters in bent rectangular reinforced concrete beams with a crack. According to this plan, computer simulations were conducted for concrete beams of C20/25 and B32/40 class. The obtained dependences enable to evaluate the operability of the considered structural elements for both groups of limiting states. They can be used to determine the parameters of fracture mechanics and evaluate the crack resistance of a beam.
bending crack , experimental design , physical nonlinearity , regression dependencies , reinforced concrete , stress state
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Department of Algebra, Mathematical Logic and Geometry Named after T. G. Mustafin, E. A. Buketov Karaganda State University, University St., 28, Karaganda, 100028, Kazakhstan
Kazakhstan Multidisciplinary Institute of Reconstruction and Development, Karaganda State Technical University, Nursultan Nazarbaev Ave., 56, Karaganda, 100027, Kazakhstan
Department of Algebra
Kazakhstan Multidisciplinary Institute of Reconstruction and Development
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