Taking into Account the Influence of Technological Precipitation of Buildings of the Surrounding Development when Installing Sheet Piling Fences of Neighboring Ditches

Number of journal: 9-2020
Autors:

Mangushev R.A.,
Gurskiy A.V.,
Polunin V.M.

DOI: https://doi.org/10.31659/0044-4472-2020-9-9-19
УДК: 624

 

AbstractAbout AuthorsReferences
When constructing large-size pit fences in terms of plan and depth, the additional settlement of neighboring buildings can reach up to 70% of the total additional during the construction of the zero cycle of a new structure. The factor of occurrence and development of additional technological settlements may be the unstructuring of the foundation soils under existing structures as a result of dynamic or static sinking of the sheet pile. At high-frequency vibro-driving (extraction) of sheet piles in a thick layer of weak soils, the energy of the vibratory pile driver is spent on the destruction of structural connections in the near-pile space. At the same time, at a short distance from the piles, the soil can turn into a state of heavy, viscous liquid. At a greater distance, due to dynamic impact, sensitive lake-sea and lake-glacial deposits lose up to 90% of their original physical and mechanical characteristics. As a result, the day surface and surrounding buildings can get significant additional deformations. When using the technology of static sheet pile indentation, additional stresses occur in the soil mass due to the drag forces of the sheet pile tip and the forces of lateral friction along its side surface. Additional stresses lead to compaction of the soil layers, and, subsequently, to additional deformations of adjacent buildings. Methods for estimating additional precipitation of buildings and structures when a metal sheet pile is submerged near them by the method of vibrating and static indentation are considered, and the results of calculations are compared with data from monitoring of precipitations of real structures.
R.A. MANGUSHEV1, Doctor of Sciences (Engineering),
A.V. GURSKIY2, Candidate of Sciences (Engineering),
V.M. POLUNIN1, Engineer-Builder (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Saint Petersburg State University of Architecture and Civil Engineering (4, Vtoraya Krasnoarmeiskaya, Saint-Petersburg, 190005, Russian Federation)
2 OOO “PKTI Fundament-test” (5, Udelniy Prospect, Saint-Petersburg, 194017, Russian Federation)

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For citation: Mangushev R.A., Gurskiy A.V., Polunin V.M. Taking into account the influence of technological precipitation of buildings of the surrounding development when installing sheet piling fences of neighboring ditches. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2020. No. 9, pp. 9–19. DOI: https://doi.org/10.31659/0044-4472-2020-9-9-19


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