NUMERICAL MODELING OF THE PROBLEM OF DOUBLE-LAYER REINFORCEMENT

• Main Authors: Nizomov Dzhakhongir Nizomovich, Khodzhiboev Abduaziz Abdusattorovich
• Format: Article
• Language: English
• Published: Moscow State University of Civil Engineering (MGSU) 2012-10-01
• Series: Vestnik MGSU
• Subjects: fundamental solution; contact boundary; boundary equations; stress concentration; discrete model; double-layer reinforcement; boundary elements; compatibility conditions
• Online Access: http://vestnikmgsu.ru/files/archive/issues/2012/5/ru/12.pdf

The article covers the mathematical model and the algorithm of calculation of the double-layer reinforcement based on the method of boundary integral equations developed by the authors. The system of equations, based on discrete representation, is a combination of equations describing each of sub-domains with account for the conditions of compatibility alongside the contact boundaries. The convergence and accuracy of numerical modeling is based on the testing results of the problem under consideration. Results of the numerical solution of the problem of uniaxial tension of the plate that has two layers of reinforcement are provided in the article. The algorithm is implemented by analyzing the stress-strained state of structures of Nurek hydraulic power plant. The proposed solution is applicable in the lining of tunnels and subterranean structures in rock massifs, as well as galleries arranged in the body of earth dams. It represents two layers of concrete with different values of the modulus of elasticity and Poisson ratio. Tangential stress and reinforcement ring graphs are presented in the article.