Abstract
This study presents a refined model for analyzing doweled joints in concrete pavements using Finite Element Method (FEM) analysis. Recognizing the critical role of mechanical behavior at concrete slab joints in pavement thickness design, the study divides the joint mechanism into two primary functions: aggregate interlocking and dowel action, including bending of the dowel bar. A sophisticated joint model incorporating these functions was developed and evaluated through numerical calculations against experimental data, illustrating its accuracy. The model addresses the discontinuity and structural weaknesses introduced by transverse joints, which are typically used to control cracking due to volumetric changes in concrete slabs but can reduce pavement load capacity. It also considers the severe stress conditions at joint edges caused by repetitive traffic loading, which often leads to cracking. The paper elaborates on the development of an FEM based on thin plate theory, detailing the formulation of joint elements that encapsulate both the aggregate interlocking and dowel action mechanisms. The study's findings indicate the refined joint model's efficacy in capturing the load transfer characteristics of doweled joints, significantly contributing to the accurate prediction of pavement behavior under various load conditions. This advancement aids in the structural analysis of concrete pavements, offering insights into the optimization of their design and the enhancement of their durability. (Abstract generated by AI tool ChatGPT 4)
Published Version
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