The Influence of Base Layer Thickness in Flexible Pavements

Authors

  • M. A. S. Hadi Department of Civil Engineering, University of Baghdad, Iraq
  • M. H. Al-Sherrawi Department of Civil Engineering, University of Baghdad, Iraq
Volume: 11 | Issue: 6 | Pages: 7904-7909 | December 2021 | https://doi.org/10.48084/etasr.4573

Abstract

Flexible pavement design and analysis were carried out in the past with semi-experimental methods, using elastic characteristics of pavement layers. Due to the complex interferences between various layers and their time consumption, the traditional pavement analysis, and design methods were replaced with fast and powerful methods including the Finite Element Method (FEM) and the Discrete Element Method (DEM). FEM requires less computational power and is more appropriate for continuous environments. In this study, flexible pavement consisting of 5 layers (surface, binder, base, subbase, and subgrade) had been analyzed using FEM. The ABAQUS (6.14-2) software had been utilized to investigate the influence of the base layer depth on vertical stresses and displacements. Three different thicknesses were adopted (10, 20, and 30cm) with constant other pavement layer thicknesses. The results of this study showed that the stress levels at the top of the base layer increased by about 37% when the thickness of this layer increased from 10cm to 30cm, while the stress levels at the top of the subbase layer decreased by about 64%. When the base layer increased from 10 to 20, from 20 to 30, and from 10 to 30cm the vertical displacement decreased by 18%, 24%, and 37% respectively.

Keywords:

flexible pavement, ABAQUS, base thickness, finite element method

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References

T. Kumela, "Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)," American Journal of Civil Engineering, vol. 6, no. 5, pp. 141–146, Nov. 2018, https://doi.org/10.11648/j.ajce.20180605.11.

E. M. Abd Alla, "The rational use of finite element method in the analysis of flexible pavements," JES. Journal of Engineering Sciences, vol. 34, no. 4, pp. 1185–1211, Jul. 2006, https://doi.org/10.21608/jesaun.2006.110780.

"Getting Started with ABAQUS/Explicit: Keywords Version (v6.5-1)," Abacus Documentation. https://classes.engineering.wustl.edu/2009/spring/mase5513/abaqus/docs/v6.5/books/gsx/default.htm?startat=ch04s01.html (accessed Nov. 16, 2021).

S. Helwany, J. Dyer, and J. Leidy, "Finite-Element Analyses of Flexible Pavements," Journal of Transportation Engineering, vol. 124, no. 5, pp. 491–499, Sep. 1998, https://doi.org/10.1061/(ASCE)0733-947X(1998)124:5(491).

M. S. Ranadive and A. B. Tapase, "Parameter sensitive analysis of flexible pavement," International Journal of Pavement Research and Technology, vol. 9, no. 6, pp. 466–472, Nov. 2016, https://doi.org/10.1016/j.ijprt.2016.12.001.

A. E. A. E.-M. Behiry, "Fatigue and rutting lives in flexible pavement," Ain Shams Engineering Journal, vol. 3, no. 4, pp. 367–374, Dec. 2012, https://doi.org/10.1016/j.asej.2012.04.008.

F. Khodary, H. Akram, and N. Mashaan, "Behaviour of different pavement types under traffic loads using finite element modelling," International Journal of Civil Engineering and Technology, vol. 11, no. 11, pp. 40–48, Nov. 2020, https://doi.org/10.34218/IJCIET.11.11.2020.004.

A. Lazizi, H. Trouzine, A. Asroun, and F. Belabdelouhab, "Numerical Simulation of Tire Reinforced Sand behind Retaining Wall Under Earthquake Excitation," Engineering, Technology & Applied Science Research, vol. 4, no. 2, pp. 605–611, Apr. 2014, https://doi.org/10.48084/etasr.427.

A. S. Mahdi and S. D. Mohammed, "Experimental and Numerical Analysis of Bubbles Distribution Influence in BubbleDeck Slab under Harmonic Load Effect," Engineering, Technology & Applied Science Research, vol. 11, no. 1, pp. 6645–6649, Feb. 2021, https://doi.org/10.48084/etasr.3963.

A. H. Abed and A. A. Al-Azzawi, "Evaluation of Rutting Depth in Flexible Pavements by Using Finite Element Analysis and Local Empirical Model," American Journal of Engineering and Applied Sciences, vol. 5, no. 2, pp. 163–169, Aug. 2012, https://doi.org/10.3844/ajeassp.2012.163.169.

Y. Huang, Pavement Analysis and Design, 2nd ed. Upper Saddle River, NJ, USA: Pearson, 2003.

P. C. Nguyen, D. D. Pham, T. T. Tran, and T. Nghia-Nguyen, "Modified Numerical Modeling of Axially Loaded Concrete-Filled Steel Circular-Tube Columns," Engineering, Technology & Applied Science Research, vol. 11, no. 3, pp. 7094–7099, Jun. 2021, https://doi.org/10.48084/etasr.4157.

M. T. Rahman, K. Mahmud, and S. Ahsan, "Stress-Strain Characteristics of Flexible Pavement by Finite Element Method," International Journal of Civil and Structural Engineering, vol. 2, no. 1, pp. 233–240, Sep. 2011.

H. Wang and I. L. Al-Qadi, "Evaluation of Surface-Related Pavement Damage due to Tire Braking," Road Materials and Pavement Design, vol. 11, no. 1, pp. 101–121, Jan. 2010, https://doi.org/10.1080/14680629.2010.9690262.

F. Khodary, H. Akram, and A. Othman, "Prediction of Flexible Asphalt Pavement Performances under Material Properties in Variation Influence," International Journal of Advanced Research in Science, vol. 6, no. 12, pp. 11953–11963.

A. B. Tapase and M. S. Ranadive, "Performance Evaluation of Flexible Pavement Using the Finite Element Method," pp. 9–17, Jul. 2016, https://doi.org/10.1061/9780784480090.002.

G. Shafabakhsh, M. Motamedi, and A. Famili, "Influence of asphalt concrete thickness on settlement of flexible pavements," EDJE, vol. 18, pp. 473–483, Jan. 2013.

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How to Cite

[1]
M. A. S. Hadi and M. H. Al-Sherrawi, “The Influence of Base Layer Thickness in Flexible Pavements”, Eng. Technol. Appl. Sci. Res., vol. 11, no. 6, pp. 7904–7909, Dec. 2021.

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