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A platform for research: civil engineering, architecture and urbanism
Study on Pavement Superposition Effects under Multiple Aircraft Tires
Superposition effects of runway asphalt pavement under multiple aircraft tires load are discussed in this paper. 30 x 20 x 10 m (Full Size Model), 15 x 20 x 10 m (1/2 Model) and 15 x 15 x 10m (1/4 Model) size models are established on ABAQUS 3D numerical analysis platform. Using those models, asphalt pavement responses under single tire, double tires, single tandem, dual tandem, dual triple, and compound landing gear are studied. Results show that multiple superposition effects are apparent. The pavement surface deflection under full landing gear is larger than any other tire groups; the maximum vertical strain on the top of the sub-grade and the horizontal stress at the bottom of the base appear in 6 tires group for A 380 and rear 8 tires group for B-777; the largest strain or stress can reach 1.15 times of the full landing gear's value. Based on the pavement responses under multiple tires load, the fatigue life of pavement is analyzed. Functions developed by LEDFAA, APSDSR and UC Berkeley are used in the fatigue analysis. The results of flexible and semi-rigid pavements show that the allowed load repetitions of runway asphalt pavement under full landing gear are 20∼30% higher than 6 or 4 tires group. Therefore, the full landing gear is recommended to be used in asphalt pavement structure design.
Study on Pavement Superposition Effects under Multiple Aircraft Tires
Superposition effects of runway asphalt pavement under multiple aircraft tires load are discussed in this paper. 30 x 20 x 10 m (Full Size Model), 15 x 20 x 10 m (1/2 Model) and 15 x 15 x 10m (1/4 Model) size models are established on ABAQUS 3D numerical analysis platform. Using those models, asphalt pavement responses under single tire, double tires, single tandem, dual tandem, dual triple, and compound landing gear are studied. Results show that multiple superposition effects are apparent. The pavement surface deflection under full landing gear is larger than any other tire groups; the maximum vertical strain on the top of the sub-grade and the horizontal stress at the bottom of the base appear in 6 tires group for A 380 and rear 8 tires group for B-777; the largest strain or stress can reach 1.15 times of the full landing gear's value. Based on the pavement responses under multiple tires load, the fatigue life of pavement is analyzed. Functions developed by LEDFAA, APSDSR and UC Berkeley are used in the fatigue analysis. The results of flexible and semi-rigid pavements show that the allowed load repetitions of runway asphalt pavement under full landing gear are 20∼30% higher than 6 or 4 tires group. Therefore, the full landing gear is recommended to be used in asphalt pavement structure design.
Study on Pavement Superposition Effects under Multiple Aircraft Tires
Zhao, Hongduo (author) / Ling, Jianming (author) / Yao, Zukang (author)
GeoShanghai International Conference 2010 ; 2010 ; Shanghai, China
Paving Materials and Pavement Analysis ; 546-551
2010-05-14
Conference paper
Electronic Resource
English
Study on Pavement Superposition Effects under Multiple Aircraft Tires
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