Development of substitute equations using computational tools and its application in the teaching of pavement design
DOI:
https://doi.org/10.46502/issn.1856-7576/2024.18.01.1Keywords:
Teaching, design, civil engineering, educational software application, rigid pavement.Abstract
This work focuses on the development of substitute equations to correct the effective reaction modulus of the subgrade, keff, based on the potential erosion of the subbase material, LS, and its inclusion in a computational tool that allows its use in teaching of rigid pavement design. Until now, the adjustment of the reaction modulus, keff, due to the potential loss of support, is done by processing the nomogram provided by the AASHTO guide, 1993. This study describes the procedure followed to develop the equations that substitute the nomogram, so that these can be introduced in the calculation procedure and facilitate their systematization and analysis of different scenarios for pavement design, without the need to consult the nomogram. This includes the use of AutoCAD to digitize the nomogram presented by AASHTO, 1993. The numerical values obtained are used to fit the substitute equations, with the help of Microsoft Excel. An example is also included in which scenarios are evaluated as a didactic strategy to simulate different design conditions of rigid pavements. An example is also included in which scenarios are evaluated as a didactic strategy to simulate different design conditions of rigid pavements. As a basis, data on the modulus of elasticity of the material that makes up the subbase, ESB, and the resilient modulus, MR, of the subgrade, which are obtained in the laboratory, are used.
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Copyright (c) 2024 Maria Fernanda García Aladín, Diego Dario Perez Ruiz, Maria Fernanda Serrano Guzmán, Camila Elizabeth Noguera Calvache
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