摘要
利用单轴贯入试验和无侧限抗压试验,对沥青混合料的抗剪性能进行评价.研究中利用三维有限元分析,论证了该方法的可行性,提出利用单轴贯入试验数据来求解混合料抗剪强度的强度参数.通过对大量试验数据的分析,提出沥青混合料破坏拐点的概念,给出了单轴贯入试验的试验条件和环境;同时结合无侧限抗压试验数据建立了求解混合料粘聚力和内摩擦角的公式.结果表明,单轴贯入试验可以有效地评价沥青混合料的抗剪性能.
As the real stress states in the pavement can＇t be simulated by triaxial test, a new test method -uniaxial penetration test method, is put forward in this paper, with which the shearing properties of asphalt mixture can be efficiently evaluated. According to the finite analysis, this new method proves feasible. This paper presents the resistant parameters of the shearing properties of asphalt mixture by using the uniaxial penetration test＇s result. A new concept of destroy inflexion is brought forward and this point is regarded as the asphalt mixture＇s resistance. Combined with the uniaxial pressure test method,several formulae are established to calculate the cohesion and inner angular of asphalt mixture.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第8期1036-1040,共5页
Journal of Tongji University:Natural Science
基金
国家杰出青年科学基金资助项目(50325828)
西部交通科技项目(200131800095)
关键词
沥青混合料
单轴贯入试验
无侧限抗压试验
强度参数
抗剪性能
破坏拐点
粘聚力
内摩擦角
asphalt mixture
uniaxial penetration test
uniaxial pressure test
resistant parameters
shearing properties
destroy inflexion
cohesion
inner angular
