A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of Vehicle Braking on Pavement Shakedown Limits
Shakedown analysis has been regarded as a rational pavement design method in recent years. If the value of traffic load does not exceed the critical level (i.e., shakedown limit), pavement will not exhibit continuous accumulated plastic strains which eventually lead to failure within the pavement system. During the process of vehicle braking, the traffic moving speed is constantly changing with a relatively large friction coefficient between wheel and pavement surface. This study is aimed to investigate the dynamic effect of both vehicle speed and friction coefficient on pavement shakedown limits under braking condition. A finite element model is utilized to obtain the dynamic elastic stress field for the calculation of shakedown limit. The moving speed of the applied load using user subroutine is set to decrease continuously with a constant acceleration which is supervised by the horizontal frictional force. Results show that the shakedown limit of pavement decreases with the increasing of friction coefficient (corresponding to higher acceleration) and increases with the decreasing of load moving speed. The critical shakedown state occurs when the vehicle begins to decelerate. Dynamic shakedown analysis for both uniform and two-layered pavement systems is investigated.
Influence of Vehicle Braking on Pavement Shakedown Limits
Shakedown analysis has been regarded as a rational pavement design method in recent years. If the value of traffic load does not exceed the critical level (i.e., shakedown limit), pavement will not exhibit continuous accumulated plastic strains which eventually lead to failure within the pavement system. During the process of vehicle braking, the traffic moving speed is constantly changing with a relatively large friction coefficient between wheel and pavement surface. This study is aimed to investigate the dynamic effect of both vehicle speed and friction coefficient on pavement shakedown limits under braking condition. A finite element model is utilized to obtain the dynamic elastic stress field for the calculation of shakedown limit. The moving speed of the applied load using user subroutine is set to decrease continuously with a constant acceleration which is supervised by the horizontal frictional force. Results show that the shakedown limit of pavement decreases with the increasing of friction coefficient (corresponding to higher acceleration) and increases with the decreasing of load moving speed. The critical shakedown state occurs when the vehicle begins to decelerate. Dynamic shakedown analysis for both uniform and two-layered pavement systems is investigated.
Influence of Vehicle Braking on Pavement Shakedown Limits
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Nazarian, Soheil (editor) / Al-Qadi, Imad (editor) / Qamhia, Issam I.A. (editor) / Dai, Yuchen (author) / Qian, Jiangu (author) / Lei, Feifei (author)
2021-08-31
8 pages
Article/Chapter (Book)
Electronic Resource
English
Influence of Vehicle Braking on Pavement Shakedown Limits
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