特大桥施工测量精度浅析

Analysis on Super-large Bridge Construction Measurement Precision

文章以兰渝铁路嘉陵江双线特大桥为工程背景,在介绍施工测量平面控制网的基础上,阐述了桥梁施工测量放样的精度要求及具体控制措施,分析了测量误差产生的原因,并提出了相应的测量精度评定方法。

With Jialing River Double-line Super-large Bridge in Lanzhou-Chongqing Railway as the engineering background, based on introducing the plane control net of construction measurement,the article described the accuracy requirements and specific control meas- ures of bridge construction measurement lofting, analyzed the causes of measuring errors, and proposed the corresponding evaluation method of measurement precision.