大型斜拉桥索道管初定位及精密定位测量方法研究

Study on Initial Positioning and Precise Positioning Measurement Method of Cable Duck of Large Scale Stayed Bridge

该文论述了大型斜拉桥索道管出壁口和进壁口中心点位确定的方法,拉索坐标系统同主桥施工坐标系统的关系;采用索道管空间直线方程来计算索道管特征点坐标,用于索道管的初定位在劲性骨架上,并且论述了全站仪三维坐标法放样索道管的原理方法及精度分析,具有一定的实际指导意义。

In this paper, the method for determining the center point of cable duck＇ s wall inlet and wall outlet of large stayed bridge, and the relationship between the cable coordinate system and the construction coordinate system of main bridge are all discussed ; The feature point coordinates of cable duck is cal- culated by using the space straight line equation, then the cable duck is put on the initial stiffness frame. The principle method and precision analysis of the three-dimensional coordinate method for wall outlet ca- ble duck by the total station instrument is discussed, and it has some practical significance.