摘要
在高层建筑施工测量中地面建筑施工轴线控制网需要不断向上投测构成投测网,在实际施工中野外测量数据在现场迅速快捷处理是比较困难的问题,为了满足工程实践的需要,探讨了满足投测精度的正三角形投测网平差问题并推导了相应的计算公式。投测网可以分两步进行平差计算,即:(1)采用条件平差消除观测值的矛盾;(2)利用第一步的平差结果及设计值计算各点的归化改正数,同时说明了该方法和秩亏自由平差结果是一致的,最后通过工程实例的具体数据说明该方法的正确性。
In high rise building construction measurement, the ground building axis control network needs to be continuously to head up project to constitute the projection net. Actually, it is comparatively difficult to rapidly process the data measured in the field. To satisfy the demand of engineering practice, this article discusses the survey adjustment problem in an equiangular triangle projection net met the accuracy need and derives the calculation formula. The survey adjustment can be divided into two steps ： （ 1 ） to eliminate the antinomy between measured data by considering the survey adjustment condition ; （2） with the results obtained from the first step and designed value to compute the naturalized correct number for every point. Then, the paper states the method offered results coincident with the data from rank defect freedom adjustment. Finally, the accuracy of the method tested against factual data from actual engineering was approved.
出处
《南京工业大学学报（自然科学版）》
CAS
2005年第6期52-55,共4页
Journal of Nanjing Tech University(Natural Science Edition)
关键词
投测网
秩亏平差
归化改正
projection net, survey adjustment, naturalized correct number
