Case analysis of integrated maintenance technology for multi-dimensional rapid detection and trenchless reinforcement

China’s highway construction has moved from “construction-oriented” to the development stage of “equal attention and maintenance”. The infrastructure represented by urban expressways, under heavy complex traffic loads, is prone a variety diseases that take place in middle lower layers pavement such as “frost boils” “voids”, which cannot be repaired ideally with help conventional detection treatment techniques. In order solve above problems, this paper adopts nondestructive testing plans ground penetrating radar falling weight deflectometer conduct multidimensional rapid road surface obtain image information mechanical data structure. Based on improved calculation method, disease area, depth type can effectively judged. Combined observation water level, polymer grouting reinforcement plan designed eliminate problems surface. It reduce incidence upper layer sidewalk, significantly improve efficiency service level sidewalk.