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Abstract

To study the temperature field and temperature stress of CRC+AC composite pavement, this paper adopted Fortran language to develop subprograms and expand the function of the large-scale finite element software Abaqus based on the basic principles of heat transfer. Meanwhile, the external temperature changing with time was defined, and steady-state and transient heat conduction analysis was conducted. The temperature field of the continuous reinforced concrete composite pavement structure in continuous temperature conditions was simulated by utilizing 24-hour measured temperature data on a winter day of a place. The influence of structural layer parameters on the winter temperature field and temperature stress of the continuous reinforced concrete composite pavement structure was analyzed and studied. The results show that the temperature stress difference on the top surface of the continuous reinforced concrete layer during the winter cycle is as high as 2.42 MPa, and the temperature stress difference on the top surface of the asphalt layer is as high as 0.56 MPa. The thicker asphalt layer leads to lower temperature stress of each structural layer, and the thicker continuous reinforced concrete layer brings about lower temperature stress of the continuous reinforced concrete layer. Additionally, the higher modulus of the asphalt layer and continuous reinforced concrete layer means greater temperature stress. As the temperature decreases, the difference between the maximum stress and the minimum stress increases with the temperature, but the increase magnitude decreases. The pavement is prone to temperature fatigue damage, thus causing cracks.

Publication Date

8-18-2022

DOI

10.14048/j.issn.1671-2579.2022.04.004

First Page

21

Last Page

30

Submission Date

May 2025

Reference

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