曲线桥梁和高架路施工控制测量方法

Method of Construction Control Survey of Curve Bridge and Overhead Road

为了搞好大中型曲线桥梁、高架路的施工测量工作 ,确定施工控制网的基本精度是非常重要的 .在分析曲线桥梁桥墩施工放样容许误差和桥梁全长边长相对中误差的基础上 ,推导了施工控制测量控制点的点位中误差和控制网在重要方向的边长相对中误差的精度要求 ,为控制网的建立提供了重要的依据 .同时 ,考虑到导线形式作为施工控制网的一些良好特性 ,介绍了在满足基本精度前提下导线控制测量实用的技术方案 。

In order to doing the construction survey of the large curve bridge and the overthead road,mark certaining the basal precision of the constrution control net is very important work.Based on the admissible error of curve bridge pier's setting out and fractional admissible error of bridge,the ascertaining method of the precision need of construction control net is put forword.The technique of using traverse to consititute construction control net is introduced.