The finite element design procedure of deformation a tunnel lining of the underground, co-operating with dry and water sated soils is constructed. For interaction modeling between lining and soil environments including physically nonlinear, the special "contact" finite element is used, allowing to consider all cases of interaction of contacting surfaces. A number of problems of deformation of a ring an underground lining tunnel, including consisting of the separate blocks contacting among themselves, located in a ground of the difficult physical nature is solved. Necessity of the decision of a contact problem for modelling of interaction of concrete blocks of a ring lining is shown.
метод конечных элементов, контактные задачи, сухие и водонасыщенные грунты, упругопластическое деформирование, a method of finite elements, contact problems, dry and water-sated soils, elasto plastic strain
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