New Asphalt Pavement Failure Criterion Based on Unified Strength Theory
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第3期
论文作者：杨群 CHEN Lu 王屏 DAI Jingwang
文章页码：528 - 532
摘 要：This study aims to introduce an appropriate analytical method for asphalt pavement based upon unified strength theory（UST）. The traditional maximum shear stress strength theory（MSST） cannot describe the marked difference between tension strength and compressive strength or variable intermediate principal stress, which significantly affects the geotechnical materials. Our studies try to find a new asphalt pavement failure criterion that considers the influence of both tension-compression strength ratio and intermediate principal stress of asphalt mixture. In order to select a suitable theory on pavement material, the UST is introduced and compared with the traditional theory. Results show that the tension-compression strength ratio of asphalt mixture, which is used as a material parameter, dramatically affects the stress and stress distribution law in pavement; the pavement stress level increases dramatically after considering the intermediate principal stresses. Therefore, the UST which considers both tension-compression strength ratio and intermediate principal stress is more in line with the material characteristics of asphalt pavement.
杨群，CHEN Lu，王屏，DAI Jingwang
Key Laboratory of Road and Traffi c Engineering of the Ministry of Education, Tongji University
摘 要：This study aims to introduce an appropriate analytical method for asphalt pavement based upon unified strength theory（UST）. The traditional maximum shear stress strength theory（MSST） cannot describe the marked difference between tension strength and compressive strength or variable intermediate principal stress, which significantly affects the geotechnical materials. Our studies try to find a new asphalt pavement failure criterion that considers the influence of both tension-compression strength ratio and intermediate principal stress of asphalt mixture. In order to select a suitable theory on pavement material, the UST is introduced and compared with the traditional theory. Results show that the tension-compression strength ratio of asphalt mixture, which is used as a material parameter, dramatically affects the stress and stress distribution law in pavement; the pavement stress level increases dramatically after considering the intermediate principal stresses. Therefore, the UST which considers both tension-compression strength ratio and intermediate principal stress is more in line with the material characteristics of asphalt pavement.
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