Finite-element analysis of strengthening the subgrade on the basis of boring and mixing technology

• Autorzy: Tiutkin Oleksii , Neduzha Larysa , Kalivoda M.

Identyfikatory

DOI

10.21307/tp-2021-034

• Języki publikacji: EN

Abstrakty

EN

One of the effective techniques to strengthen the subgrade is boring and mixing technology, which is based on the immersion of vertical elements – piles into the subgrade. This method of strengthening significantly affects the stress state of the track superstructure. Two options of the placement of strengthening elements are examined in this paper. To determine the influence of position of strengthening elements on the stress state of the track superstructure, appropriate finite-element models were created. The models fully reflect the geometric and deformation characteristics of a real subgrade, which is strengthened by piles. The calculated stress state of the track superstructure is shown and analyzed in this paper. The main contribution of the paper lies in optimization of the geometric parameters of the technology to reduce the stress state of the "track superstructure–subgrade–soil basement" system. The results show that the location of piles near the rails is more effective than the location of piles near the ballast section.

Słowa kluczowe

EN

finite-element model; stress state; boring and mixing technology; track superstructure; subgrade; strengthening

PL

model elementów skończonych; stan naprężenia; technologia wiercenia i mieszania; nawierzchnia torowa; podtorze; wzmocnienie

• Wydawca: Wydawnictwo Politechniki Śląskiej
• Czasopismo: Transport Problems
• Rocznik: 2021
• Tom: T. 16, z. 2
• Strony: 189--197
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Tiutkin Oleksii

• Dnipro National University of Railway Transport named after Academician V. Lazaryan, Lazaryan St. 2, 49010, Dnipro, Ukraine

autor

Neduzha Larysa

• Dnipro National University of Railway Transport named after Academician V. Lazaryan, Lazaryan St. 2, 49010, Dnipro, Ukraine

autor

Kalivoda M.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Technická 4, 166 07, Prague 6, Czech Republic

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