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Сообщения, помеченные ‘Calculations on pile foundations on karst territories’

20
Jul

Lodigina N.D. Calculations on pile foundations on karst territories

Calculations on pile foundations on karst territories

Lodigina N.D.

The analysis of major accidents caused by karst deformation shows that in every case the mistakes have been made at different stages of construction: site selection, engineering survey, design, facilities construction and their operation. The paper presents calculations on stress-strain state of the pile strip foundation in the course of karst hole formation. The pile design scheme is presented as a rod elastically secured into the ground at one end while the other end has a pivotally-fixed pairing with grillage and load linearly increasing on the pile. The paper defines pile deformation (displacement, cross sections rotation angles), bending moment and strains in the pile, depending on variable z, which values range from zero in the joint to 1in a tight sealing. This calculation technique makes it possible to perform the power analysis of forces acting on the pile in karst holes caused by the caving-in horizontal soil pressure, as well as to do all kinds of calculations on piles (including test, design and load capacity).

Keywords: calculations on pile foundations, karst, strain, deformation, technique.

References

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«Engineering industry and life safety» №2 (20), 2014. Pages: 15-18
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Lodigina Nina Dmitrievna – Ph.D., Murom Institute of Vladimir State University, Murom, Rus-sia. E-mail: nina.lodygina@yandex.ru