Behavior analysis of maximum stresses induced in rigid pavements due to partial replacement of slabs
Abstract
The objective of this study is to analyze the behavior of the maximum stresses induced in concrete slabs as a result of modifications in their geometry. This condition is due to maintenance operations that consider the partial replacement of paving slabs. The analysis is carried out by modeling finite elements of the pavement in sections that consider 2 transversal slabs and 3 longitudinal slabs. A square geometry, traditionally used in Chile, of 3,500 mm (length) x 3,500 mm (width) has been used as the base for each slab. The effect of partial replacement of the central slab by variable lengths in combination with variations in slab thickness of 150 mm, 160 mm, 180 mm and 200 mm has been studied for 3 types of subgrade. The models have been solved by means of finite element analysis and for this the EverFE 2.26 software has been used, which has been widely used for the study of rigid pavements. The maximum stresses induced by the most critical position of the load have been studied, which corresponds to the positioning of the single axle with dual tires on the edge of the slab. The results allow recommending a limit configuration in the partial replacement of slabs in order to control the maximum stresses induced and thereby avoid the reduction of their useful life. The determined increase in the stresses in the slab is between 3.63 and 7.61% and these values allow calculating by fatigue models, a decrease in the total number of load applications of 27% for slab thicknesses of 150mm (K=0.064 MPa/mm) and 14% for slabs of 200mm (K=0.064 MPa/mm) thickness, which is reflected in a reduction in its useful life.
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References
[2] M. V Mohod and K. N. Kadam, “A Comparative Study on Rigid and Flexible Pavement : A Review,” J. Mech. Civ. Eng., vol. 13, no. 3, pp. 84–88, 2016.
[3] H. Gu, X. Jiang, Z. Li, K. Yao, and Y. Qiu, “Comparisons of Two Typical Specialized Finite Element Programs for Mechanical Analysis of Cement Concrete Pavement,” Math. Probl. Eng., vol. 2019, pp. 1–11, 2019.
[4] S. M. Harle and P. Pajgade, “Modelling of Plain Cement Concrete Pavement Patch Using ANSYS Workbench,” Am. J. Civ. Eng., vol. 6, pp. 1–8, 2018.
[5] Y. Qiao, J. Fricker, S. Labi, and K. C. Sinha, “Costs and effectiveness of standard treatments applied to fl exible and rigid pavements: case study in Indiana, USA,” Infrastruct. Asset Manag., vol. 6, no. 1, pp. 15–29, 2019.
[6] M. Šešlija, N. Radović, and I. Togo, “A FEM Modeling of the Concrete Pavement Made of the Recycling Material,” in MATEC Web of Conferences (Vol 73), 2016, vol. 04003, pp. 1–9.
[7] F. Mu and J. M. Vandenbossche, “ScienceDirect Evaluation of the approach used for modeling the base under jointed plain concrete pavements in the AASHTO Pavement ME Design Guide,” Int. J. Pavement Res. Technol., vol. 9, no. 4, pp. 264–269, 2016.
[8] M. R. Pallares-muñoz and J. A. Pulecio-Díaz, “Aplicabilidad del método de los elementos finitos en el análisis y dimensionamiento de losas JCPC para carreteras de dos carriles,” ITECKNE, vol. 14, no. 2, pp. 148–155, 2017.
[9] G. A. Shafabakhsh, M. Vafaei, N. Amiri, and A. Famili, “Dynamic Effects of Moving Loads on the Jointed Plain Concrete Pavement Responses,” Eng. J., vol. 21, no. 5, pp. 137–144, 2017.
[10] M. Saleh and J. D. Van Der Walt, “Evaluation of the Structural Capacity of Rigid Pavements at the Network Level,” Can. J. Civ. Eng., 2018.
[11] M. Pradena and B. Chaparro, “Análisis Estructural de Pavimentos de Hormigón: Losas Cortas en Pisos Industriales,” Rev. Politécnica, vol. 43, no. 2, 2019.
[12] A. M. Ioannides and M. I. Hammons, “Westergaard-Type Solution for Edge Load Transfer Problem,” Transp. Res. Rec. 1525, pp. 28–34, 1996.
[13] Y. H. Huang, Pavement Analysis and Design, 2nd editio. Pearson Prentice Hall, Upper Saddle River NJ, USA, 2004.
[14] Y. Liu, Z. You, and H. Yao, “An idealized discrete element model for pavement-wheel interaction,” J. Mar. Sci. Technol., vol. 23, no. 3, pp. 339–343, 2015.
[15] N. Subei, S. K. Saxena, and J. Mohammadi, “A BEM–FEM approach for analysis of distresses in pavements,” Int. J. Numer. Anal. methods Geomech., vol. 15, pp. 103–119, 1991.
[16] K. Huang, D. G. Zollinger, X. Shi, and P. Sun, “A developed method of analyzing temperature and moisture profiles in rigid pavement slabs,” Constr. Build. Mater., vol. 151, pp. 782–788, 2017.
[17] S. Kim, H. Ceylan, and K. Gopalakrishnan, “Finite element modeling of environmental effects on rigid pavement deformation,” Front. Struct. Civ. Eng., vol. 8, no. 2, pp. 101–114, 2014.
[18] X. Wang and T. Li, “Numerical Mechanical Analysis of Concrete Pavement with Dowels in Transverse Joints,” Safe, Smart, Sustain. Multimodal Transp. Syst., pp. 1020–1031, 2014.
[19] T. Sok, S. J. Hong, Y. K. Kim, and S. W. Lee, “Evaluation of load transfer characteristics in roller- compacted concrete pavement,” Int. J. Pavement Eng., vol. 21, no. 6, pp. 796–804, 2018.
[20] S. R. Maitra, K. S. Reddy, and L. S. Ramachandra, “Effect of Joint‑ and Pavement‑Related Parameters on Load Transfer Characteristics of Aggregate Interlocked Jointed Concrete Pavement,” Transp. Dev. Econ., vol. 5, no. 15, 2019.
[21] W. G. Davids, EverFE Theory Manual. Department of Civil and Environmental Engineering, University of Maine, 2003.
[22] A. Sounthararajah, H. H. Bui, P. Jitsangiam, and J. Kodikara, “Development of new mechanistic pavement design approach for cement stabilized bases,” in International conference on geotechnical engineering ICGE-Colombo-2015, Colombo, Sri Lanka., 2015.
[23] O. M. Yassenn, I. R. Endut, S. Z. Ishak, M. A. Hafez, and H. M. Yaseen, “Finite Element Modelling of Flexible Pavement,” J. Multidiscip. Eng. Sci. Technol., vol. 2, no. 1, pp. 115–120, 2015.
[24] R. B. Mallick and T. El-korchi, PAVEMENT ENGINEERING Principles and Practice. Taylor & Francis Group, 2013.
