1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China;
2. Nanyang Tongtu Highway Survey and Design Co. Ltd., Nanyang Henan 473000, China;
3. Shijiazhuang Transport Bureau, Shijiazhuang Hebei 050051, China
Analysis of Mechanical Responses of Asphalt Pavement Interlayers Based on Shear Spring Compliance
ZHANG Jiu-peng1, WU Shu-hua2, PEI Jian-zhong1, LI Yan-wei3
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China;
2. Nanyang Tongtu Highway Survey and Design Co. Ltd., Nanyang Henan 473000, China;
3. Shijiazhuang Transport Bureau, Shijiazhuang Hebei 050051, China
摘要To research the influence of the contact condition between a semi-rigid base and asphalt surface course on the mechanical responses of the pavement structure and on fatigue life, a typical pavement structure is chosen and a shear spring compliance from the software Bisar 3.0 is used as the evaluation index of the interlayer contact condition to conduct the mechanical response calculation of the pavement structure and to analyze the change law of the stress, strain, and deflection under different contact conditions. and then the fatigue life of the pavement structure is calculated under different contact conditions. The results show that the shear spring compliance can quantitatively characterize by the interlayer contact conditions between the base and surface course. The interlayer conditions have a significant impact on tensile stress and shearing force. When the interlayer contact pattern changes from a continuous state into a sliding state, the growth rate of the tension stress of the bottom of the asphalt layer is 528.25% and growth rate of shear stress is 157.3% while the interlayer conditions have a smaller impact on deflection.
Abstract：To research the influence of the contact condition between a semi-rigid base and asphalt surface course on the mechanical responses of the pavement structure and on fatigue life, a typical pavement structure is chosen and a shear spring compliance from the software Bisar 3.0 is used as the evaluation index of the interlayer contact condition to conduct the mechanical response calculation of the pavement structure and to analyze the change law of the stress, strain, and deflection under different contact conditions. and then the fatigue life of the pavement structure is calculated under different contact conditions. The results show that the shear spring compliance can quantitatively characterize by the interlayer contact conditions between the base and surface course. The interlayer conditions have a significant impact on tensile stress and shearing force. When the interlayer contact pattern changes from a continuous state into a sliding state, the growth rate of the tension stress of the bottom of the asphalt layer is 528.25% and growth rate of shear stress is 157.3% while the interlayer conditions have a smaller impact on deflection.
基金资助:Supported by the Key Program of Shaanxi Natural Science Foundation for Basic Research Plan (No.2010JZ009);and the Special Fund for Basic Scientific Research of Central College (No.CHD2012JC002)
张久鹏, 武书华, 裴建中, 李彦伟. 基于剪切弹性柔量的基-面层间接触状态及路面力学响应分析[J]. Journal of Highway and Transportation Research and Development, 2014, 8(1): 1-6.
ZHANG Jiu-peng, WU Shu-hua, PEI Jian-zhong, LI Yan-wei. Analysis of Mechanical Responses of Asphalt Pavement Interlayers Based on Shear Spring Compliance. Journal of Highway and Transportation Research and Development, 2014, 8(1): 1-6.
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2014, Vol. 8 
