连续配筋混凝土路面裂缝的发展规律分析

Analysis on Development of Cracks in Continuous Reinforced Concrete Pavement

连续配筋混凝土路面(CRCP)作为一种特殊混凝土路面,主要为了提高路用性能和防治各种病害。其薄弱面为裂缝位置,而对裂缝评价的直观指标为裂缝间距和宽度。以不同配筋率的两段CRCP为依托进行长期观测,分析归纳了CRCP路面的裂缝形态、宽度以及间距的发展规律,并对裂缝间距以及宽度的优劣进行了评定。此外还提出了裂缝间距与宽度与配筋率及龄期的关系。

Continuous reinforced concrete pavement（ CRCP） as a special concrete pavement,is mainly to improve road performance and prevention of various diseases. The weak surface is the location of the fracture,while the visual indicators of fracture evaluation is the fracture spacing and width. In this paper,long-term observation is carried out on the basis of two-stage CRCP with different reinforcement ratio. The development rules of crack shape,width and spacing of CRCP pavement are analyzed and summarized. The crack spacing and width are evaluated. In addition,the relationship between crack spacing and width and reinforcement ratio and age is also proposed.