摘要
地铁盾构隧道断面数据处理一般按最小二乘法建立拟合模型计算隧道断面的中心坐标和半径。据此,引入国家机械工业委员会评定圆度误差的4种方法:最小区域法(MZC);最小二乘法(LSC);最小外接圆法(MCC)和最大内接圆法(MIC),给出了最小区域法的一种算法实现。以南京地铁断面测量数据就上述4种评价方法分别进行拟合计算,验证了最小区域法评定圆度误差值最小。该方法可以为相关工程提供借鉴。
It is usually used the least squares method to fit center of circle and radius of the shield tunnel cross-section.Four methods evaluated by National Machinery Industry Committee to access circular degree is minimum zone method(MZC),the least square circle method(LSC),the minimum circumcircle method(MCC)and the maximum in circle method(MIC),which gives out an algorithm of MZC.Then use four methods to calculate the section survey data of Nanjing tunnel to start fitting calculation,and proved that MZC is the best method for evaluate circular degree,which can be a reference for some engineering.
出处
《现代测绘》
2018年第1期15-18,共4页
Modern Surveying and Mapping
基金
国家自然科学基金项目(41504024)
关键词
断面
最小区域法
最小二乘法
最小外接圆法
最大内接圆法
cross-section
minimum zone method
least square circle method
minimum circumcircle method
maximum incircle method