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一、国内外关于高层建筑中轴线、垂直度控制等的几种测量方法: 1.挂线锤法。即用锤挂线把下层的水平轴线引至上层来控制建筑物垂直度的方法。此法的优点是操作简易方便,所用的工具钢丝和重锤价钱便宜;缺点是受气候影响大,精度低,如遇挑、挂外架的脚手架等就无法测量,因此,它常用于要求较低的一般建筑物。 2.用经纬仪进行垂直投影与正倒镜穿线测量法,是目前建筑工程施工测量中使用最普遍的方法。这种方法的优点是测量精度一般较高。如客观条件尚好(气候、邻房位置、脚手架等情况),又能选用好闭合导线的几何图形,则可测得更高的精度。但这种
I. Domestic and foreign methods for measuring the central axis and verticality of high-rise buildings: 1. Hanging line hammer method. That is, the method of controlling the verticality of the building by using the hammer line to guide the horizontal axis of the lower layer to the upper layer. The advantage of this method is that it is easy and convenient to use. The tool steel wire and hammer are used cheaply. The disadvantage is that it is influenced by the weather and the precision is low. If it is caught in a scaffold, etc., it cannot be measured. Therefore, it is often used for requirements. Low general building. 2. Using the theodolite for vertical projection and forward mirror threading measurement method is the most common method used in construction engineering survey. The advantage of this method is that the measurement accuracy is generally higher. If the objective conditions are good (climate, adjacent room, scaffold, etc.), and the geometry of the closed wire can be selected, higher accuracy can be measured. But this