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Deflections Governed by the Cyclic Strength of Rigid Pavement Subjected to Structural Vibration Due to High-Velocity Moving Loads
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Deflections Governed by the Cyclic Strength of Rigid Pavement Subjected to Structural Vibration Due to High-Velocity Moving Loads
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Journal Article
Deflections Governed by the Cyclic Strength of Rigid Pavement Subjected to Structural Vibration Due to High-Velocity Moving Loads
2024
Overview
Objective
In the present study, the deflections governed by cyclic strength due to structural vibrations caused by high-velocity moving load on a rigid pavement have been evaluated.
Methods
A novel finite-element-based cyclic response model has been proposed in terms of velocity-induced stress ratio for the design of rigid pavement. It consists of a characteristic strength and the number of cycles of moving load. The central deflection of the rigid pavement is captured for varied loading inputs, velocities, and pavement thicknesses.
Results
The velocity-induced deflection zones have been identified for a set of selected velocities. A set of displacement contours have been observed along with a displacement shift and phase transformation in principal stress fields beyond a critical value. The vibrational compounded stress transfer mechanism (V-CSTM) for rigid pavement design has been presented using the thickness of the pavement, velocity, and intensity of the moving load. The results have been compared within the output obtained from numerically varied parameters utilizing codal provisions. The cyclic strength of the rigid pavement has been found as 0.01-0.2% of the characteristic strength. The findings imply that the rigid pavement will withstand 10
15
–10
9
cycles of moving load within the range of input parameters.
Societal benefits
The research outcomes provide a classified interpretation for the field engineers and practitioners to evaluate the life of rigid pavement supported by granular bases for construction practices.
Publisher
Springer Nature Singapore,Springer Nature B.V
Subject
/ Control
