Вестник Российского университета дружбы народов. Серия: Инженерные исследованияВестник Российского университета дружбы народов. Серия: Инженерные исследования2312-81432312-8151Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)4743Research ArticleInteraction of a protecting wall with a soil massif in process extractions of foundation pitAbu Mahadi Mohamed Ibrahim-Department of Building Structures and Constructions Engineering facultyabumahadi1@gmail.comElfimovV IDepartment of Building Structures and Constructions Engineering facultyeks47@mail.ruPeoples Friendship University of Russia15012013110911707092016Copyright © 2013,2013The computing procedure to determine the soil pressure on retaining structure and it’s displacements during earth excavation from a pit is developed. At the first stage the protecting construction (slurry wall, sheet piling, row of piles) is enclosed in a ground from the both sides, then the earth excavation from one side of the screen begins. The variations of soil pressure on the both sides of protecting screen are traced in the process of computing with proposed method. The critical depth of a pit at the moment of failure is determined. The retaining structure in the calculating scheme is simulated as an elastic beam construction. The soil is presented as a nonlinear model, in which the modulus of rigidity decreases when the soil stress is nearing to the ultimate limit value. The mathematical procedure consists of iteration of sequential separate calculations by Gauss’s method.soil pressureretaining structurenonlinear modelмеханикамеханика грунтовоснованиефундаментподпорная стенашпунт[Didukh B., Abu Mahadi M. Determination of parameters of nonlinear soil model in experimental soil tests with breaking load // Modern Problems of theory and practice in engineering research. Proceedings of the 35th Conference of Engineering Faculty. — Moscow, 235—237, (1999) (in Russian).][Nussbaumer M., Von Wolffersdortf P.-A. Retaining structures and excavated slopes. Proceedings of the Fourteenth International Conference on soil mechanics and Foundation engineering, Hamburg, 2285—2289, (1997).][Simpson В. Retaining structures displacement and design. Thirty-second Rankine Lecture, Geotechnique, 539—576, (1992).][Simpson В. Partial factors of safety for the design of retaining walls. Geotechnique, 131—136,(1992).]