Geotechnical Forecast of the Impact of the Pile Foundation in the Ravine on the Existing Development

Geotechnical forecast is the most reliable way to assess the impact of new construction on the existing development. The article considers the development of a method of filling the soil in a ravine, which is safe for the surrounding nearby buildings, as well as the arrangement of a pile foundation for a multi-storey reinforced concrete residential complex. Proposals for the technology of filling the soil with a layer, the thickness of which reaches 10 m in some places, are developed with due regard for the stratification of the slopes of the ravine and the possible soaking of this soil mass. To assess the impact of the pile field arrangement, the following processes were modeled: driving pre-fabricated piles into the layers of bulk soil and into the bedrock, the arrangement of the “leader” well, driving a pre-fabricated reinforced concrete pile into the “leader” well, the arrangement of a bored pile, the influence of previously submerged piles on the stress distribution in the array during the construction of new piles, as well as the influence of technological interruptions during the production of works. In each calculation, the stress-strain state of the ground masses is modeled using the calculation complex. The system of physically nonlinear finite elements describes the work of the soil in accordance with the Coulomb-Mohr strength theory. The construction of a single model was carried out for each characteristic section of the ravine, taking into account the terrain, ground conditions and load. On the basis of the analysis of the results of the performed studies, a geotechnical forecast is made and recommendations are given for the safe arrangement of the bulk foundation and the construction of the pile foundation.

I.Т. MIRSAYAPOV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
I.V. KOROLEVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Kazan State University of Architecture and Engineering (1, Zelenaya Street, Kazan, 420043, Russian Federation)

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