中南大学学报（自然科学版）2017，Vol.48Issue(7)：1908-1914,7.DOI:10.11817/j.issn.1672-7207.2017.07.030
三轴拉压应力状态下沥青混合料的破坏准则
Failure criterion of asphalt mixture in triaxial tension and compression state
摘要
Abstract
In order to study strength properties of asphalt mixture in multiaxial tension and compression complex stress state,uniaxial tension and compression strength tests,as well as plane tension and compression/axial compression,plane tension and compression/axial tension tests were carried out by self-developed triaxial test machine.The triaxial strength properties and failure characteristics of AC-13C asphalt mixture were studied under the combined action of compression and tension stress through the tests of 74 specimens.A linear failure criterion of AC-13C asphalt mixture under multiaxial tension and compression stress condition was established by octahedron stress theory.The results show that the specimens have characteristics of tensile strain and tensile stress failure.Triaxial tension and compression strength is less than uniaxial tension strength and uniaxial compression strength.So,the maximum tensile stress theory which is used as failure criterion in asphalt pavement design in China may be somewhat unsafe.The failure criterion considers the synergistic damage effect among each principal stress,and it can be adequately used to describe the triaxial strength law of asphalt pavement material.It has simple expression form and is convenient for engineering application.关键词
沥青混合料/复杂应力状态/三轴拉压/强度试验/破坏准则Key words
asphalt mixture/complex stress state/triaxial tension and compression/strength test/failure criterion分类
交通工程引用本文复制引用
黄拓,昌振东,杨毅..三轴拉压应力状态下沥青混合料的破坏准则[J].中南大学学报（自然科学版）,2017,48(7):1908-1914,7.基金项目
国家自然科学基金资助项目(51608055,51578081) （51608055,51578081）
湖南省自然科学基金资助项目(2017JJ3337) （2017JJ3337）
湖南省教育厅项目(16C0051) （16C0051）
交通运输部建设科技项目(2015318825120) (Projects(51608055,51578081) supported by the National Natural Science Foundation of China （2015318825120）
Project(2017JJ3337) supported by the Natural Science Foundation of Hunan Province （2017JJ3337）
Project(16C0051) supported by the Education Department of Hunan Province （16C0051）
Project(2015318825120) supported by Construction Project of Science and Technology of Ministry of Transportation) （2015318825120）
