Research on Rutting Model of Semi-Rigid Asphalt Pavement Based on Hamburg Rutting Test
Abstract
In order to establish a more effective rutting model of semi-rigid asphalt pavement, after sampling on-site,the Hamburg rutting test was conducted to analyze the relationship between ambient temperature, load magnitude,number of load actions and rutting depth; Taking Shami model as a reference,the environmental temperature,load size,load times and asphalt thickness are taken as model parameters;the rutting prediction models of upper,middle and lower surfaces of semi-rigid asphalt pavement structure are established by multiple linear regression analysis,and the models are modified by 6 sections of 4 expressways.The model is used to test 8 sections of 5 expressways,the results show that the average error rate of the calculated value of the model is 15.16%,which is obviously lower than the average error rate of 27.32% of the calculated value of the rut model in the current standard.Therefore,the model has high accuracy and can provide theoretical guidance for the design and maintenance of semi-rigid asphalt pavement.
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DOI: https://doi.org/10.18686/utc.v8i2.146
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