Load Transfer Characteristics of Dowel Bar System in Jointed Concrete Pavement

2009 ◽  
Vol 135 (11) ◽  
pp. 813-821 ◽  
Author(s):  
Swati Roy Maitra ◽  
K. S. Reddy ◽  
L. S. Ramachandra
Keyword(s):  
Load Transfer ◽  
Concrete Pavement ◽  
Transfer Characteristics ◽  
Jointed Concrete Pavement ◽  
Dowel Bar

The Dowel Group Action in Jointed Concrete Pavement

2012 ◽  
Vol 622-623 ◽  
pp. 1892-1895
Author(s):  
Yi Qiu Tan ◽  
Yun Liang Li ◽  
Luo Ke Li ◽  
Zhong Jun Xue
Keyword(s):  
Group Action ◽  
Shear Force ◽  
Load Transfer ◽  
Concrete Pavement ◽  
Force Distribution ◽  
Shear Load ◽  
Concrete Pavements ◽  
Wheel Load ◽  
Jointed Concrete Pavement ◽  
Dowel Bar

The wheel load transfer across a joints in concrete pavement is accomplished mainly by dowel bar system, dowels are installed in order to allow shear load transfer across slab joints. The dowel group action has been examined in this paper via from using of 3-D FE mode. Numerical model results are presented in four formats in this study, including shear force diagram, load transfer ratio by shear force, dowel shear force distribution and dowel shear ratio. The relationships between applied wheel load and dowel group action will be useful in the design and evaluation of dowel jointed concrete pavements.

scholarly journals Load Transfer Characteristics and Durability Study of GFRP Dowels in Jointed Concrete Pavement

2012 ◽  
Vol 5 ◽  
pp. 277-282 ◽  
Author(s):  
Luo Ke Li ◽  
Yi Qiu Tan ◽  
Xiang Bing Gong ◽  
Yun Liang Li
Keyword(s):  
Evaluation Method ◽  
Load Transfer ◽  
Element Model ◽  
Concrete Pavement ◽  
Shear Transfer ◽  
Transfer Characteristics ◽  
Jointed Concrete Pavement ◽  
Feasible Alternative ◽  
Glass Fibre Reinforced ◽  
Term Performance

The corrosion of steel dowels in concrete pavement can compromise the load transfer capability of joints and lead to premature damage. To solve this problem, the non-corrosive glass fibre reinforced polymers (GFRP) bar has been used as dowels in concrete pavement instead of the steel dowels.This thesis demonstrates the Load Transfer Characteristics of a GFRP dowels with the help of a 3D finite-element model, and various evaluation method and index are studied as well, including: (1)efficiency of load transfer , (2)coefficient of shear transfer , (3) distribution ratio of shear transfer. An accelerated test is applied to examine the long-term performance of the GFRP dowel bars by using self-designed equipment.This study shows that GFRP dowels is a feasible alternative to steel dowels which can entirely meet the needs of road performance, and the research results will be useful in the design and application of GFRP dowels in jointed concrete pavements.

Analysis of Factors Influence on Void Underneath at Concrete Pavement Joints

2014 ◽  
Vol 488-489 ◽  
pp. 483-486
Author(s):  
Fang Ran Zhao ◽  
Jia Lin Cao ◽  
Ning Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Load Transfer ◽  
Three Dimensional ◽  
Transfer Effect ◽  
Concrete Pavement ◽  
Element Analysis ◽  
Joint Stress ◽  
Transverse Joint ◽  
Dowel Bar

Three-dimensional finite element analysis was made on the transverse joint stress state of the concrete pavement slab with void underneath using ANSYS. The transfer effect of dowel bar was discussed with aircraft loaded in the joints. The influence rule of load transfer effect under different dowel bar spacing and dowel bar cross section dimension was compared. Based on the results of finite element analysis, this paper had carried on the experimental study on stress-transferring effect on concrete pavement joints with different location of the dowel bar. The influencing factors of pavement slab transverse joint with void underneath and the resistance of pavement damage on the joint was analyzed. Theoretical analysis showed that in order to reinforce the resistance capacity of local cavity on concrete pavement joint, the largest spacing of transverse dowel bar set shall not be more than 45cm, and the main factors influencing the resistance void ability on the joint are top reaction modulus, coefficient of cavity, the concrete elastic modulus and coefficient of transverse reinforcement.

Analysis of Ultimate Load-Bearing Capacity for Dowel Bar System in Rigid Pavement Based on XFEM

2013 ◽  
Vol 444-445 ◽  
pp. 961-965
Author(s):  
Luo Ke Li ◽  
Yi Tang Zhou ◽  
Peng Cao ◽  
Yi Na Wang
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Fracture Process ◽  
Model Simulation ◽  
Accurate Method ◽  
Concrete Pavement ◽  
Element Analysis ◽  
Rigid Pavement ◽  
Jointed Concrete Pavement ◽  
Dowel Bar

In order to analyze the premature damage of dowel bar system in jointed concrete pavement, the eXtended finite element method (short for XFEM) coupled with submodeling method were employed to simulate the fracture process of concrete around the dowel bar under loading. This coupling method is based on 3-D finite element analysis for the whole concrete pavement structure. The initialization and evolution of the cracks on the concrete had been monitored in model simulation. The results demonstrate that the XFEM coupled with submodeling method is an efficient and accurate method to calculate the ultimate bearing capacity of dowel bar. Furthermore, the critical axle load could be back-calculated based on the former analyzing results. This study is expected to provide a valuable numerical analysis method to simulate the fracture process in stresses concentration region of the concrete structure.

Mechanistic-Based Parametric Model for Predicting Rolling Resistance of Concrete Pavements

2019 ◽  
Vol 2673 (7) ◽  
pp. 341-350 ◽  
Author(s):  
Danilo Balzarini ◽  
Karim Chatti ◽  
Imen Zaabar ◽  
Ali A. Butt ◽  
John T. Harvey
Keyword(s):  
Life Cycle ◽  
Energy Dissipation ◽  
Life Cycle Cost ◽  
Load Transfer ◽  
Rolling Resistance ◽  
Concrete Pavement ◽  
Slab Thickness ◽  
Viscoelastic Deformation ◽  
Jointed Concrete Pavement ◽  
Energy Dissipated

The structural rolling resistance (SRR) is the component of rolling resistance that occurs because of the viscoelastic deformation of the pavement structure. In this paper, a simple model to calculate the energy dissipation as a result of the SRR on rigid pavements is developed for use in applications such as life cycle cost analysis and life cycle assessment. First, the energy dissipated by different vehicles was calculated on 12 concrete pavement sections using a fully mechanistic approach. Using the program DYNASLAB to simulate the vehicles moving along the pavement sections, the energy dissipation was calculated as the work done by the vehicle to overcome the slope seen by the wheels because of the pavement deformation. The results were then used to develop a simple and rapid-to-use model to predict the energy dissipation on any jointed concrete pavement. The model consists of a simple predictive function that can provide the value of the SRR energy dissipation given the mechanical properties of the pavement section (slab thickness and stiffness, modulus of subgrade reaction, subgrade damping coefficient, pavement geometry, and load transfer efficiency) and the loading conditions (speed and loads). The model was based on a sensitivity analysis that was used to select the optimal set of structural and environmental factors.

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