摘要
裂缝作为沥青混凝土路面的主要病害之一,严重影响着道路的使用寿命以及行车舒适度。主要阐述了断裂力学在沥青混凝土裂缝方面的研究,以及对R-曲线、数字图像相关技术等新兴方法的概述。断裂力学从金属行业而来,在研究沥青混凝土断裂方面经历了从线弹性理论到非线性理论的发展。R-曲线理论是断裂扩展分析的重要手段,数字图像相关技术的发展有助于推动沥青混凝土R-曲线的研究,有望弥补沥青混凝土的裂缝扩展分析。
As one of the main distresses of asphalt concrete pavement, the crack seriously impacts the service life of road and the driving comfort. This paper mainly sets forth the study of fracture mechanics in the asphalt concrete crack, and summarizes the newly-developing methods of R-curve and digital image technologies. The fracture mechanics is from the metal industry, and goes through the development from the linear elastic theory to the nonlinear theory in the study of asphalt concrete fracture. The R-curve theory is an important means to analyze the fracture extension. The development of digital image and relative technologies is conducive to promote the study of R-curve asphalt concrete, and is hopeful to make up the crack extension analysis of asphalt concrete.
出处
《城市道桥与防洪》
2018年第11期155-159,共5页
Urban Roads Bridges & Flood Control
关键词
沥青混凝土
断裂力学
R-曲线
数字图像相关技术
asphalt concrete
fracture mechanics
R-curve
relative technologies of digital image
