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Mechanical analysis of airport composite pavement
structure under aircraft wheel load |
(School of Highway, Chang′an University, Xi′an, Shaanxi 710064, China; 2. China Road and Bridge Corporation, Beijing 100011, China; 3. School of Management, Xi′an University of Finance and Economics, Xi′an, Shaanxi 710000, China)
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Abstract The threedimensional finite element model was eatablished with the consideration of load transfer efficiency in the old cement concrete pavement. Considering the arrangement of critical load position, the mechanical responses on the composite pavement surface and at the bottom of the overlay for the old cement concrete were calculated under the aircraft loads of B737300, B767300ER and B777300ER. The maximum value of mechanical response and the location of mechanical response were calculated. The results show that the critical load position of the composite pavement is in the middle of longitudinal seam, and the mechanical response of the composite pavement under the load of the multiaxis landing gear is multistress peak mode. With the increasing of the number of axes, the mechanical response is increased significantly, and the superposition effect is more obviously in the multiplaxles. The location of the maximum pavement response at the bottom of the asphalt concrete overlay for the old cement concrete appears near the edge of the tire side.
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Received: 02 August 2018
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