Fatigue Fracture Analysis of Reflection Cracks in Asphalt Pavement Layer of Old Cement Concrete Pavement
In response to the characteristics of reflective cracks in the asphalt pavement layer of old cement concrete pavement,a five layer system plane strain model was established using fracture mechanics theory.The stress intensity factors of different interlayer bonding states and pavement structural parameters under various loads were calculated and analyzed,and the effectiveness of commonly used measures to prevent reflection cracks was compared.The results indicate that the interlayer bonding state has a significant impact on crack propagation.The geogrid has a relatively good effect in preventing reflection cracks.
old cement concrete pavementasphalt pavement layerstress intensity factorinterlayer contact statemeasures to prevent reflection cracks
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