DOI: https://doi.org/10.15802/stp2017/118187

STUDY OF THE EFFECT OF SOIL CEMENT ELEMENTS WHEN STABILIZING ROADBED MODEL IN LABORATORY CONDITIONS

V. D Petrenko, O. L. Tiutkin, I. O. Sviatko

Abstract


Purpose.Experimental studies allow determining th estress-strain state or bearing capacity of the tested soil body. A preliminary study of the results of model testing and experimental research allows us to find the optimal solutions and to justify the parameters of the chosen technology. The purpose of this work is to determine the effect of soil cement elements when stabilizing the roadbed on a weak subgrade using the soil tests in laboratory conditions. Methodology. During the development of measures for the reconstruction and consolidation of soil bodies, their strength is tested using many methods. In all cases, we take into account the physical and mechanical characteristics of soils obtained as a result of research, as well as the existing regulatory documents. We performed the experimental studies by model testing in laboratory conditions. The model testing was based on the corresponding relationships between geometric sizes, mechanical properties of materials, loads and other factors on which the stress-strain state depends. During testing, the model was loaded gradually. We maintained each load level up to conditional stabilization of the soil deformation. We took the readings from measuring devices at each stage of loading after achievement of stabilization of soil mass deformations. We fixed the readings in the test journal. Findings. During stabilization with soil cement piles there is an improvement in mechanical properties, which leads to a decrease in deformations by 2…3.5 times. Each test is accompanied with graphs of relative deformations-stress dependence, as well as deformation curves and compression curves. According to the results of experimental stu-dies, it can be seen that when testing a model with cement piles, compared with a model without soil cement piles, the relative deformations of the samples taken prior to the experiment and after the experiment almost coincide, indicating a decrease in deformability under load. Originality. We proved that this stabilization type positively affects the stress-strain state of the soil body, by increasing its physical and mechanical characteristics. The obtained results allow for rational design of subgrade stabilization work with the help of modern technologies.Practicalvalue. The in-depth analysis of the results of experimental studies opens up possibilities for theoretical synthesis and development of theoretical foundations, which will allow in the future avoiding, in the similar cases, the experimental verification of the stabilization type given for the relative type of soil. It is confirmed that this method of stabilization used can be applied in real conditions.


Keywords


roadbed; soil cement elements; trough study; soil tests

Full Text:

PDF

References


Analitychna zapyska do Kontseptsii Derzhavnoi tsilovoi prohramy rozvytku pasazhyrskykh perevezen na zaliznychnomu transporti Ukrainy do 2020 roku. (2010). Kyiv: Kyivdiprotrans. (in Ukrainain)

PJSC Ukrzaliznytsia (2016). Dovidnyk osnovnykh pokaznykiv roboty zaliznyts Ukrainy (2005–2015 roky). Kyiv. (in Ukrainian)

Kurgan, N. B. (2015). Predposylki sozdaniya vysokoskorostnykh magistraley v Ukraine. Ukrainski zaliznytsi, 5-6 (23-24), 16-21.

Bosov, A. A., Kurhan, M. B., Kurhan, D. M., & Baidak, S. Yu. (2012). Estimation of economic efficiency from restrictions elimination of speed movement of trains. Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, 41, 106-115. (in Ukrainian)

Petrenko, V. D., Sviatko, I. O., & Yampolskyi, D. O. (2013). Porivnialnyi analiz metodiv ukriplennia zemlianoho polotna. Stroitelstvo, materialovedenie, mashinostroenie, 69, 369-373. (in Ukrainian)

Pravyla rozrakhunkiv zaliznychnoi kolii na mitsnist i stiikist: TsP-0117 : zatv. nakazom Ukrzaliznytsi vid 13.12.2004 r. №960-TsZ. (2004). Kyiv: TsP UZ. (in Ukrainain)

Barreira, A., Reis V., & Macario, R. (2013). Competitiveness of high-speed rail. Transportation Research Record: Journal of the Transportation Research Board, 2374, 9-16. doi: 10.3141/2374-02

High speed rail. First track to sustainable mobility. (2009). Retrieved from: http://www.vialibre-ffe.com/PDF/4509_AVE_UIC.pdf.

Blainey, S. P., Armstrong, J., Smith, A. S. J., J. & Preston, M. (2016). New routes on old railways: increasing rail’s mode share within the constraints of the existing railway network. Transportation, 43(3), 425-442. doi: 10.1007/s11116-015-9582-5

Petrenko, V. D., Sviatko, I. O., & Tiutkin, O. L. (2016). Estimation of subgrade strengthening influence using soilcement elements. Science and Transport Progress 4(64), 161-168. doi: 10.15802/stp2016/78254

Thelisson, G. (2012, July). Overhead line from start to finish. Railway Gazette International, 48-49.


GOST Style Citations


  1. Аналітична записка до Концепції Державної цільової програми розвитку пасажирських перевезень на залізничному транспорті України до 2020 року. – Київ : Київдіпротранс, 2010. – 39 с.
  2. Довідник основних показників роботи залізниць України (2005–2015 роки) / ПАТ «Українська залізниця». – Київ, 2016. – 58 с.
  3. Курган, Н. Б. Предпосылки создания высокоскоростных магистралей в Украине / Н. Б. Курган // Укр. залізниці. – 2015. – № 5–6 (23–24). – С. 16–21.
  4. Оцінка економічної ефективності усунення обмежень швидкості руху поїздів, пов’язаних зі станом залізничної колії / А. А. Босов, М. Б. Курган, Д. М. Курган, С. Ю. Байдак // Вісн. Дніпропетр. нац. ун-ту залізн. трансп. ім. акад. В. Лазаряна. – Дніпропетровськ, 2011. – Вип. 41. – С. 106−115.
  5. Петренко, В. Д. Порівняльний аналіз методів укріплення земляного полотна / В. Д. Петренко, І. О. Святко, Д. О. Ямпольський // Стр-во, материаловедение, машиностроение : сб. науч. тр. / Приднепр. гос. акад. стр-ва и архитектуры. – Днепропетровск, 2013. – Вып. 69. – С. 369–373.
  6. Правила розрахунків залізничної колії на міцність і стійкість : ЦП-0117 : затв. наказом Укрзалізниці від 13.12.2004 р. № 960-ЦЗ. – Київ : ЦП УЗ, 2004. – 69 c.
  7. Barreira, A. Competitiveness of high-speed rail / A. Barreira, V. Reis, R. Macario // Transportation Research Record : Journal of the Transportation Research Board. − 2013. – Vol. 2374. − P. 9−16. doi: 10.3141/2374-02.
  8. High speed rail. First track to sustainable mobility [Electronic resource]. – Paris : UIC, 2009. – 14 р. – Available at: http://www.vialibre-ffe.com/PDF/4509_AVE_UIC.pdf. – Title from the screen. – Accessed : 15.02.2017.
  9. New routes on old railways: increasing rail’s mode share within the constraints of the existing railway network / S. P. Blainey, J. Armstrong, A. S. J. Smith, J. M. Preston // Transportation. – 2016. – Vol. 43. – Iss. 3. – P. 425–442. doi: 10.1007/s11116-015-9582-5.
  10. Petrenko, V. D. Estimation of subgrade strengthening influence using soilcement elements / V. D. Petrenko, I. O. Sviatko, O. L Tiutkin // Наука та прогрес транспорту. – 2016. – № 4 (64). – С. 161–168.
    doi: 10.15802/stp2016/78254.
  11. Thelisson, G. Overhead line from start to finish / G. Thelisson // Railway Gazette Intern. – 2012. − July. − P. 48−49.




Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

 

ISSN 2307–3489 (Print)
ІSSN 2307–6666 (Online)