免棱镜全站仪和AutoCAD在桥墩围堰定位中的应用

在桥墩围堰定位测量中,考虑到在水面无法架设反光镜,结合工程实例,探讨了将免棱镜全站仪与AutoCAD绘图软件相结合用于桥墩围堰施工测量的方法。首先利用免棱镜全站仪直接测量出桥墩外沿的坐标,然后根据外沿坐标在AutoCAD中定出桥墩中心,再通过作图得到围堰坐标,从而精确确定围堰的位置。实际应用表明,该方法既满足精度要求,又快捷方便,应用效果良好。

Application of Free Prism Total Station and AutoCAD in the Positioning of Pier Cofferdam

Because the reflector can’t be erected on the water in the positioning of bridge pier cofferdam,this paper discussed the construction measurement method by which the Free Prism Total Station and AutoCAD were used to determine the position of bridge pier cofferdam.Firstly,this method used Free Prism Total Station to measure the coordinates along the piers,and then determined the center of the pier in AutoCAD according to the coordinates.In the end,the coordinates of cofferdam were obtained through mapping.Practical application shows that the method not only satisfies require of precision,but also make the positioning work quick and convenient.