摘要
文中对乌鲁木齐市10条道路路面的裂缝表观、3条道路路面的裂缝切面进行观测,对裂缝病害的分类、分布、形态、影响因素及发生和演化机制进行了分析。结果表明,乌鲁木齐市的路面病害以规律性间距的横向裂缝为主,部分路段与连续的纵向裂缝垂交形成网格裂缝。纵向裂缝的路面结构内部破损程度高于横向裂缝;横向裂缝属于因沥青低温品质不佳和过度老化形成的温缩裂缝,荷载及雨水加速其往下发展;纵向裂缝一般沿轮迹带连续分布,主要由混合料抗剪不足或强度不足引起;而网裂是路面结构整体强度不足的表征。
The crack appearances of 10 road pavements, the crack section appearances of 3 road pavements in Urumqi were investigated.Based on the statistics of various diseases, the classification, distribution, shape, influencing factors, occurrence and evolution mechanism of crack diseases were analyzed. The results show that the pavement diseases in Urumqi are mainly horizontal cracks with regular intervals, and some road sections are perpendicular to the continuous longitudinal cracks to form grid cracks. The internal damage of the road structure with vertical cracks was higher than that of the horizontal cracks. Transverse cracks are caused by temperature shrinkage cracks caused by poor low-temperature quality and excessive aging of asphalt, which are accelerated by load and rain. Longitudinal cracks are generally distributed continuously along the wheel track belt, which is mainly caused by insufficient shear or strength of the mixture. However, net crack is a sign of insufficient overall strength of pavement structure.
作者
叶青
刘帆
王欣芸
熊峰
欧阳
Ye Qing;Liu Fan;Wang Xinyun;Xiong Feng;Ou Yang(Urumqi Urban Construction Design and Research Institute,Urumqi,Xinjiang 830000;Wuhan Roadsun Transportation Science and Technology Co.Ltd.,Wuhan,Hubei 430040)
出处
《江西建材》
2022年第8期52-53,56,共3页
Jiangxi Building Materials
基金
乌鲁木齐市建设科技项目《乌鲁木齐城市道路适应性路面结构及设计方法研究(No.1)》(编号:乌建防kt202001)。
关键词
城市道路
病害调研
路面裂缝
裂缝演化机制
裂缝产生机理
Urban roads
Disease investigation
Pavement crack
Fracture evolution mechanism
Crack generation mechanism
