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城市道路与公路在结构和施工工序上有着显著的差异。公路的主要作用是承担机动车行驶任务,而城市道路不仅要承担机动车行驶任务,而且还要承担非机动车行驶和行人行走的任务。在结构方面城市道路设有机动车道、非机动车道、人行道、绿化带以及各种城市配套的公共设施。在城市道路的路基中又埋设许多公共设施管线,如:给水、燃气、电力以及城市排水等,而这些管线通常设有很多的检查井。多年来道路上的检查井与周围路面的顺接都是质量的薄弱环节,施工中存在许多难点,道路竣工后留下诸多的隐患。我们常常遇到的包括检查井与路面顺接不平、检查井周围路面出现沉降、裂缝和破损等,这不仅严重影响交通行驶安全,也极大地影响城市环境质量。
There are significant differences in the structure and construction process of urban roads and highways. The main role of the highway is to take on the task of running a motor vehicle. Urban roads not only have to take on motor vehicle missions, but also have the task of driving non-motorized vehicles and pedestrians. In terms of structure, urban roads have motorized lanes, non-motorized lanes, sidewalks, green belts, and public facilities for various cities. In the roadbed of urban roads, many utilities lines are buried, such as water supply, gas, electricity, and urban drainage. These pipelines usually have many inspection wells. For many years, the inspection wells on the road and the connection of the surrounding roads are the weak links of quality. There are many difficulties in the construction, leaving many hidden dangers after the roads are completed. We often encounter that the inspection well and the road are not smooth, settlement, cracks and damages appear on the road around the inspection well. This not only seriously affects the traffic safety, but also greatly affects the quality of the urban environment.