免棱镜全站仪测量拱圈线形及其精度分析  

A method of measuring the arch ring using a reflectorless total station and its accuracy analysis

作　　者：陈顺超[1,2] 黄平明[1] 孙胜江[1] 

机构地区：[1]长安大学桥梁与隧道陕西省重点实验室,西安710064 [2]西南林业大学交通机械与土木工程学院,昆明650224

出　　处：《工程勘察》2011年第7期66-69,共4页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金青年项目(50908016)

摘　　要：为解决既有拱桥评定时拱圈线形测量的难题,提出了一种在拱桥侧面架设免棱镜全站仪测量拱圈线形的新方法,并给出了详细的操作步骤;分析了该方法的X和Z坐标测量误差的主要来源,根据误差传播定律,推导了X和Z坐标测量中误差的计算公式,并通过模拟试验和工程实例对测量精度进行了验证。研究结果表明,免棱镜全站仪测量拱圈线形具有测量精度高,操作简便,测点不受限,适应性强等优点,是拱圈线形测量的一种较好方法。In order to solve the problem of the shape measurement of arch ring for the evaluation of in-service arch bridge,a new method is presented that measures the arch ring using a reflectorless total station on the side of the arch bridge and the detail operations are given.The main measurement errors of X and Z coordinates are analyzed and the formulas for mean square errors of X and Z coordinates are derived according to the error propagation law.The measurement accuracy of the new method is verified by simulated experiments and real engineering examples.The results show that the new method is good for the shape measurement of arch ring due to its unique advantages,such as high measurement accuracy,easy operation,arbitrary choosing measurement points and good adaptability.

关 键 词：免棱镜全站仪 拱桥 拱圈测量 精度分析 

分 类 号：P258[天文地球—测绘科学与技术]