Road pavement design using the finite element method

Yanov, D V; Зелепугин, С. А.

doi:10.1088/1742-6596/1214/1/012024

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The use of the FEM in road pavement design gives one much flexibility when analyzing the pavement stress-strain condition and establishing the pavement and roadbed bearing capacity. The number of layers, location, and material type used to calculate pavement reactions using such a tool is not limited [66,67]. A pool of researchers has been using the 3D FE program for many years.…”

Section: Ansysmentioning

confidence: 99%

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Mensahn¹,

Wada²,

Lugeiyamu³

2022

IJTET

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Transport and international agencies invest millions of dollars on road projects to support countries develop their infrastructure; therefore, it is important to ensure longer service life and value for money. The primary function of the pavement structure is to keep distresses, including fatigue cracking and permanent deformation, to an acceptable limit so that the pavement can withstand applied vehicle load and repetitions during the service duration. Furthermore, the layered structure of the pavement is intended to ensure that the vehicle contact pressure is distributed in such a way that critical responses at the bottom layer of the pavement are low enough to avoid severe damage. Two typical procedures associated with roadway pavement design are empirical-based and structural analysis methods. However, the empirical-based methods have significant shortcomings, as predicting the mode and extent of pavement performance becomes a major challenge. Alternatively, the structural analysis methods have advanced extensively with computers since they consider crucial factors such as traffic loads, material characteristics and environmental conditions. The imputation of these parameters into the computer algorithm contributes to a better understanding of the mechanical performance of constituent pavement material responses. The predicted responses enable highway engineers to select appropriate pavement compositions that will deteriorate at a satisfactory level during the time of service. The most common structural analysis approaches are analytical modelling and numerical simulation. On the other hand, differences in analysis results generation using these approaches have been a notable concern. This review article presents a synopsis of typical pavement design methods and the problem connected with them; structural approaches to identify factors influencing their accuracy. Furthermore, computer algorithms use due to their usefulness, and the assumptions of layered theories employed in pavement structural design are discussed to uncover potential drawbacks for future upgrades.

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Section: Ansysmentioning

confidence: 99%

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Mensahn¹,

Wada²,

Lugeiyamu³

2022

IJTET

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“…Due to the distribution of loads over the road surface, there is a high number of options which can be used to place the layers within a road system [3,17,[60][61][62][63]. Undersized road systems are prone to premature failure [56], especially when the traffic occurs in the freezing / thawing periods [11,21,24,25], or during periods of high humidity [11,29,54,64].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Forest Road Systems Subjected to Different Loadings by Using the Finite Element Method

Musat

Bitir

2022

Forests

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In the actual context, in which there is a trend of increasing the weight of the vehicles used to transport materials, checking the deformations of road systems as a response to dynamic and static loadings is necessary to better manage the road infrastructure. The goal of the study was to evaluate how the number and the thickness of layers, and the material types could influence the behavior of the road systems subjected to different loads, and to find out which of the road systems have the smallest deformations. The Romania forest roads are classified into three categories, and the most important are the principal forest roads. There were chosen road systems proper to this category. Consequently, nine types of road systems were considered, based on the materials used and the thickness of the layers, and the deformations were evaluated by considering loads of 25, 35 and 45 tons. For modeling the behavior of road systems under different loads, the Finite Element Method (FEM) was used taking into consideration the static domain. The models show that, in all the cases, the deformations depend on the number of layers, while the thickness of the ballast layer can reduce the deformations because of the rigidness of the structure. Those findings are very important because not all the modeled roads systems could provide suitable bearing capacity. Hence, an inappropriate thickness of the layers could negatively influence the behavior of road systems under the traffic with weight increased.

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“…Although, linear elastic materials were used with the finite element method at first, today it is possible to make linear and nonlinear two-dimensional (2D) and three-dimensional (3D) dynamic and static analyzes, thanks to computer technology. Moreover, there is no limit to the number of layers and material in the finite element analysis recently (Yanov & Zelepugin, 2019).…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of stress distributions and displacements in rigid and flexible pavements via finite element method

Serin

Oğuzhanoğlu

Kayadelen

2021

rdlc

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In many countries of the world, rigid and flexible pavements are widely used. Some of the external factors such as stresses and displacements play major role in the design of pavement layers such as coating, base and sub-base. Although empirical formulas and methods were used in the calculation and design of the pavement layers, complexity of today's transportation engineering demands effectiveness of the empirical formulas were diminished. Nowadays complex problems can be easily simulated and solved thanks to the higher analysis capabilities of the computer-aided softwares. In this study, the stress distributions and displacements were examined under traffic loads in rigid and flexible pavements with different coating layer thicknesses (30 mm, 50mm, 70mm, 100 mm, and 150 mm) by using finite element method. As a result, the vertical displacement in the flexible pavements were obtained as 5% higher than the vertical displacement in the rigid pavements. Based on the stress distribution results, the stress values of flexible pavements were 60% lower than the stress values of the rigid pavements. Moreover, It was determined that the stresses in the rigid pavements remain in the coating layer, while the stresses in the flexible pavements reach the base and sub-base. In addition, regression models have been developed to predict stress and displacements by using layer thicknesses. High correlation and determination coefficient values (> 0.90) were achieved based on the regression analysis both in flexible and rigid pavements.

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Road pavement design using the finite element method

Cited by 6 publications

References 4 publications

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Evaluating the Forest Road Systems Subjected to Different Loadings by Using the Finite Element Method

Comparative analysis of stress distributions and displacements in rigid and flexible pavements via finite element method

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