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在公路路基、路面施工的各个阶段,要进行各种施工测量工作。这些工作主要有恢复公路中线测量,纵坡放样、路基放样和边坡放样,横净距计算和放样等。在每一个施工阶段结束后,还要进行竣工测量和检测,使中线平面位置和高程、路基宽度和横坡度、平整度及边坡坡度、横净距等均符合规范允许的误差范围。由于施工测量贯穿在公路施工的各阶段中,施工测量是否方便简单,将影响施工的进度,其质量直接影响公路的质量。传统的施工测量方法是将各种施工测量工作分开进行,因此是繁琐的、不方便的,要达到规范规定的限差也是不易的。
In the roadbed, pavement construction in all stages, to carry out a variety of construction measurement. These are mainly the restoration of road centerline surveying, longitudinal slope setting, subgrade leveling and slope setting, horizontal spacing calculation and setting out. At the end of each construction phase, the completion measurement and testing shall also be carried out so that the midline plane position and elevation, subgrade width and cross slope, flatness, slope grade and horizontal clearance meet the tolerance range of the specification. As construction measurement runs through all stages of highway construction, whether construction measurement is convenient or not will affect the progress of construction and its quality will directly affect the quality of the highway. The traditional method of construction measurement is a variety of construction measurement work separately, it is cumbersome, inconvenient, to achieve the regulatory requirements of the tolerance is not easy.