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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Magzumov R.N. – junior researcher E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it GUP Institute «BashNIIstroy» The organization address: 450064, Russia, Ufa, Konstituzii st., 3
Title of the articleDetermination of pile strip foundation extra loads when karst hole formation
Abstract.Pile strip foundations are often used шт construction on karsted areas. However, existing Codes do not fully regulate the analysis of foundation constructions on the karsted areas. In particular, extra loads due to pressure of soil downfall on the hole edges on foundation structures are not taken into account. It can provoke pile failure at the hole boundary and increase of the bearing distance of the raft above the karst hole. With the inadequate bearing capacity of the raft it can lead to emergency situation. The goal of the work is to determine the character and values of piles and the raft extra loads when karst hole formes. For this purpose, the numerical modeling is performed in the geotechnical program MIDAS GTS. The foundation soil is clay soil of very soft and soft consistency. By results of numerical investigations by means of approximation of pressures obtained, pile horizontal pressures are determined. In dependence on soil strength characteristics and the hole depth, the diagram of pile horizontal pressure is approximated by linear or bilinear function. The numerical values of pressure are evaluated by formulas given in the paper.
Keywords.Karst hole, pile foundations, horizontal soil pressure.
For citations:Magzumov R.N. Determination of pile strip foundation extra loads when karst hole formation // Izvestiya KGASU. 2014. №1(27) P.125-130.


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