Curling effects on concrete slab-on-grade fracture

Aure, Temesgen Wondimu; Ioannides, Anastasios M.

doi:10.1617/s11527-015-0700-9

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…There are two methods to build the Winkler foundation in ABAQUS. Several studies use spring elements of type SPRING1 to idealize the subgrade [ 38 ]. In this study, the interaction type of Elastic Foundation is used [ 39 ].…”

Section: Methodsmentioning

confidence: 99%

Finite Element Simulation and Multi-Factor Stress Prediction Model for Cement Concrete Pavement Considering Void under Slab

Liu

Zhou

et al. 2020

Materials

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Uneven support as result of voids beneath concrete slabs can lead to high tensile stresses at the corner of the slab and eventually cause many forms of damage, such as cracking or faulting. Three-dimensional (3D) finite element models of the concrete pavement with void are presented. Mesh convergence analysis was used to determine the element type and mesh size in the model. The accuracy of the model is verified by comparing with the calculation results of the code design standards in China. The reliability of the model is verified by field measurement. The analysis shows that the stresses are more affected at the corner of the slab than at the edge. Impact of void size and void depth at the slab corner on the slab stress are similar, which result in the change of the position of the maximum tensile stress. The maximum tensile stresses do not increase with the increase in the void size for relatively small void size. The maximum tensile stress increases rapidly with the enlargement in the void size when the size is ≥0.4 m. The increments of maximum tensile stress can reach 183.7% when the void size is 1.0 m. The increase in slab thickness can effectively reduce maximum tensile stress. A function is established to calculate the maximum tensile stress of the concrete slab. The function takes into account the void size, the slab thickness and the vehicle load. The reliability of the function was verified by comparing the error between the calculated and simulated results.

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Section: Methodsmentioning

confidence: 99%

Finite Element Simulation and Multi-Factor Stress Prediction Model for Cement Concrete Pavement Considering Void under Slab

Liu

Zhou

et al. 2020

Materials

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“…e underlying layers in JPCP have been modelled employing the Winkler foundation. Although spring elements of type SPRING1 were used to idealize the subgrade in a few studies [32], interaction of type elastic foundation is used in this study [33].…”

Section: Finite Element Modellingmentioning

confidence: 99%

“…But the mesh needs to be extremely finely divided to get the accurate result, which is often not easy. In order to overcoming the shortcoming, many researches used 20-node quadratic element (C3D20 or C3D20R) [39] and 27-node quadratic element (C3D27 or C3D27R) [32] in their studies. However, 20-node quadratic element should not be used in the analysis of contact problems, which is suitable for concrete slab on Winkler foundation.…”

Section: Validation Of Numerical Modelsmentioning

confidence: 99%

Mechanical Behavior of Concrete Pavement considering Void beneath Slabs and Joints LTE

Liu

Zhou

et al. 2020

Advances in Civil Engineering

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Dowel bars are arranged between two slabs of jointed plain concrete pavements to transfer load between them. The looseness of these dowel bars leads to the decrease of the load transfer efficiency (LTE). Meanwhile, repeated vehicle load can result in void near the joints. In this paper, the behaviors of concrete pavement under the effect of void size and joint stiffness were studied by using ABAQUS software. The FEA model was calibrated for different element parameters based on mesh convergence analysis and validated by comparison with previous studies. The voids beneath slabs were considered in this study, including the loaded slab and unloaded slab. The different effects of base course modulus on the stress of loaded slab are also analysed. It is concluded that the results show that the void size and joint stiffness affect the stress of the loaded plate. Smaller void size and larger joint stiffness will lead to the maximum stress located at the bottom of the loaded slab, and the void size has little effect on the stress of the loaded slab. Otherwise, the larger void size will cause larger stress. The effect of base modulus on stress is similar.

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Usage of Exclusive Plastic-Based Pre-fabricated Panels in Road Construction: A Feasibility Study

Ullam,

Singh,

Shankar

2023

Lecture Notes in Civil Engineering

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Curling effects on concrete slab-on-grade fracture

Cited by 12 publications

References 16 publications

Finite Element Simulation and Multi-Factor Stress Prediction Model for Cement Concrete Pavement Considering Void under Slab

Finite Element Simulation and Multi-Factor Stress Prediction Model for Cement Concrete Pavement Considering Void under Slab

Mechanical Behavior of Concrete Pavement considering Void beneath Slabs and Joints LTE

Usage of Exclusive Plastic-Based Pre-fabricated Panels in Road Construction: A Feasibility Study

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