Nitsevych A. Modeling of interaction effect of piles of the pile field of high-rise buildings by MBE

The object of the study - deformation processes of redistribution efforts of "soil foundation - pile field". Purpose of the study - the effect of the interaction of piles and pile field building with ground base, which was investigated by MBE in order to obtain a new computational model for determining the stress-strain state and soil bearing capacity of pile construction field. Purpose - to develop a methodology of predicting stress-strain state and bearing capacity of piles based mutual active (buffer) zones of adjacent piles. Methods: set of modern numerical methods: finite element method , the direct method of boundary elements in the form of initial deformations, the method of finite differences methods for structural mechanics, the method of gradient descent, a set of analytical research methods, classical methods of the theory of elasticity and plasticity, methods of linear algebra, two-dimensional Gaussian quadrature, method of comparative analysis of numerical results with previously known solutions of the similar problems and experimental studies on real objects (to establish the adequacy of the numerical calculations) and experimental standard methods of soil mechanics to study the physical and mechanical properties of soils, which serve as input parameters of the model. Novelty - a mathematical model for predicting the stress-strain state of pile field building by the MBE took the further development by taking into account the interaction of neighboring piles at influence matrix layout of the MBE; first substantiated involving the MBE and the method of gradient descent the area of determination of the pile at the work of the piles group, which is accounted for in predicting carrying capacity of the pile field building (11d); first obtained a model of calculation in which the program of determining the redistribution efforts in the pile field of building was compiled for the numerical MBE, allowing decisions based on Mindlin R. to monitor redistribution efforts in the pile field of building, to precise the resistance of each piles and total carrying capacity of the pile field foundation construction; proposed the model of loads redistribution definition between the piles of the pile field based of the MBE, which made it possible to further improve the choice of the distance between the piles within the pile field for the specific soil; worked out the model for the numerical MBE, which allows to track the redistribution efforts in the pile field in the presence of piles of the different lengths, the different diameters and terraced surface of the construction site. Industry - construction.