马鞍山长江大桥施工控制网设计与施测  

Design and implementation of the construction control net for the Ma'anshan Bridge over Yangtze River

作　　者：吴迪军[1] 

机构地区：[1]中铁大桥勘测设计院有限公司,武汉430050

出　　处：《工程勘察》2010年第4期71-74,共4页Geotechnical Investigation & Surveying

摘　　要：介绍了马鞍山长江大桥施工控制网的设计、施测及其精度情况。利用GPS和数字水准技术,平面和高程控制测量成果精度均优于国家二等精度。主河道跨河高程传递采用GPS双线跨河自行闭合的方案,环闭合差仅为3.2mm,不及国家二等水准测量限差的三分之一。The design and the implementation as well as the accuracy of the construction control net for Ma’anshan Bridge over Yangtze River are presented. As employing the GPS and the digital leveling technologies,both the accuracy of horizontal and the vertical results of the control network are better than the standards of the 2nd order national network. The loop error of closure of the height difference cross the main river way is only 3. 2mm,which is less than one third of the permissible error of the 2nd order leveling by using GPS double-line crossing scheme.

关 键 词：马鞍山长江大桥 施工控制网 GPS跨河水准测量 数字水准仪 

分 类 号：P228.4[天文地球—大地测量学与测量工程]