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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.Shakirov I.F. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Shaikhutdinov I.I. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleResearches of the bored pile bearing capacity in a soil massive, reinforced by cement mortar pressure injection
Abstract.Problem statement. The researches aim is to determine the changes in the pile foundation bearing capacity during strengthening the soil around the pile by pressure cementation, depending from the cement mortar injection parameters. Results. The main results of the performed studies consist in determining the stress changing patterns in the pile surrounding soil, depending on the strengthening mortar volume and pumping technology, obtaining the data about the effect to the soil reinforcement on the bored pile bearing capacity. The injection of cement mortar into the pile surrounding soil creates a stress zone in the massive, the soil around the pile is compacting, and as a result occurs the compression of the pile and a significant increase of friction along the pile lateral surface. Hardening of the ground by cementation under the pile lower end, leads to an increase in the pile frontal surface, but to a lesser degree than an increase in resistance along the lateral surface. Conclusion. Significance of the obtained results consists in determining the soil strengthening influence degree on increasing the piles bearing capacity, research results can be used in the projects developing process for reinforcing foundations at the reconstruction of buildings with a significant load increase on the existing pile foundation.
Keywords.ground base, soil massive, hardening, cementation, pile foundation, bored pile, bearing capacity.
For citations:Shakirov I.F., Shaikhutdinov I.I. Researches of the bored pile bearing capacity in a soil massive, reinforced by cement mortar pressure injection // Izvestiya KGASU. 2017. №3(41) P.139-144.


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