A Study on the Effects of Geogrid Use on Load Distribution in Highway Sublayers

Year 2020, Volume: 1 Issue: 2, 51 - 58, 16.03.2020

Tuba Kütük , Ali Gürbüz , Muhammet Vefa Akpınar

Abstract

Highways, one of the most fundamental elements of civil engineering, are constantly exposed to dynamic loads. Undesirable damage caused by these loads can occur. This study discusses the geogrids used to strengthen highway layers. Using the probability density functions obtained from the experimental results, damage probability tables were created for highway layers reinforced with geogrids. Vertical pressure distribution according to traffic loads, tire configuration and layer thickness was examined by field and laboratory tests. Within the scope of the study, five types of geogrids were used for experimental and analytical studies. Damage estimation can be made for any road reinforced with different geogrid types with the damage probability table obtained as a result of this study.

Keywords

Base-subbase reinforcement, , geogrid, base-subbase layers

Yol Alt Tabakalarında Geogrid Kullanımının Yük Dağılımına Etkileri Üzerine Bir Çalışma

Abstract

İnşaat mühendisliğinin en temel unsurlarından biri olan otoyollar sürekli olarak dinamik yüklemelere maruz kalmaktadır. Bu yüklerin sebep olduğu istenmeyen hasarlar ortaya çıkabilmektedir. Bu çalışma otoyol tabakalarının güçlendirilmesinde kullanılan geogridleri ele almaktadır. Deneysel sonuçlardan elde edilen olasılık yoğunluk fonksiyonları kullanılarak geogridler ile güçlendirilmiş otoyol tabakaları için hasar olasılık cetvelleri oluşturulmuştur. Trafik yüklerine, lastik konfigürasyonuna ve tabaka kalınlığına göre dikey basınç dağılımı saha ve laboratuvar testleri ile incelenmiştir. Deneysel ve analitik çalışmalar için beş tür geogrid kullanılmıştır. Bu çalışma sonucunda elde edilen hasar olasılık cetveli ile; farklı geogrid tipleriyle güçlendirilmiş herhangi bir yol için hasar tahmini yapılabilir.

Keywords

temel-alttemel güçlendirme, geogrit, temel-alttemel tabakaları

References

• Behiry, A. E. A E., (2013). “Evaluation of steel slag and crushed limestone mixtures as subbase material in flexible pavement”, Ain Shams Engineering Journal, Vol.4: 43–53.
• Beer M. D., Fisher C., (2013). Stress-In-Motion (SIM) System for Capturing Tri-Axial Tyre–Road Interaction in The Contact Patch, Measurement, 46, : 2155–2173.
• Cebon D. (2000).Handbook of Vehicle–Road Interaction, Swets and Zeitlinger B.V., Lisse, The Netherlands, Reprinted.
• Emery J., (2007). “Slag Utilization in Pavement Construction, Extending Aggregate Resources.” ASTM STP; 774 (1982):95–118.
• European Commission, (1997). Long term performance of road pavements. COST Action 324 Final Report. Office for Official Publications of the European communities, Luxembourg.
• Fange, H.; Hand, A. J.; Haddock, J. E., White, T. D. (2007). An Object-Oriented Framework for Finite Element Pavement Analysis, Advances in Engineering Software Vol. 38 No:11‒12, 763‒771.
• Mulungye R.M., Owende P.M.O., Mellon K., (1987). “Finite Element Modelling of Flexible Pavements on Soft Soil Subgrades.” Materials and Design, Vol. 28,: 739–756.
• Park, D.W. (2008). Prediction of Pavement Fatigue and Rutting Life Using Different Tire Types, KSCE Journal of Civil Engineering Vol. 12 No. 297‒303.
• Priest, AL; Timm, DH., (2005). A full-scale pavement structural study for mechanistic-empirical pavement design, 2005 Journal of the Association of Asphalt Paving Technologists: From the Proceedings of the Technical Sessions, Vol 74, page 519-576.
• Sebaaly P. E., (1992). Pavement damage as related to tyres, pressures, axle loads, and configurations. Vehicle, tyre pavement interface. Philadelphia, American Society for Testing and Materials, Henry, Wambold JC, editors. ASMTP STP 1164, : 54–68.
• Sert, T., Akpınar, M. V.,(2012). Investigation of geogrid aperture size effects on subbasesubgrade stabilization of asphalt pavements. The Baltic Journal of Road and Bridge Engineering Vilnius: Technika, Vol. 8, No 2, 160-168.
• Ullidtz P., (1987). Pavement Analysis,, Elsevier, Chapter: XII, Amsterdam.
• Wu, Z., (2007). Evaluating Structural Performance of Base/Subbase Materials at the Louisiana Accelerated Pavement Research Facility, Proc. of International Conference on Transportation Engineering, February 11‒14, Baton Rouge, Louisiana, USA.