南京长江四桥引桥悬臂拼装测量技术  

Measurement techniques of free cantilever erection in the Fourth Nanjing Yangtze River Bridge

作　　者：刘岭[1] 郑勇峰[1] 

机构地区：[1]浙江省电力设计院,浙江杭州310012

出　　处：《测绘工程》2014年第9期56-61,共6页Engineering of Surveying and Mapping

摘　　要：以分段施工桥梁——南京长江四桥引桥施工控制为例,针对悬臂拼装过程中的线形控制问题,明确施工过程中的主要控制内容及相应的精度控制目标,着重对施工控制网的建立、架桥机挠度检测、几何控制数据基础的选择、梁段定位测量、误差修正等内容进行研究。以最终线形控制结果为依据,评价所用测控方法,为今后悬臂拼装施工技术在类似工程中的应用提供参考。For the Fourth Nanjing Yangtze River Bridge, a segmental construction is taken as an example. With regard to the lineshape control in the free cantilever erection, the main control contents and precision objectives during the process of construction are discussed, and the following aspects are highlighted： construction control network, deflection measurement of bridge-erecting machine, data usesd to controlled, positioning of segments and error correction. Based on the results, the measurement techniques used will cover the similar projects.

关 键 词：分段施工 悬臂拼装 线形控制 误差修正 

分 类 号：P22[天文地球—大地测量学与测量工程]