南京长江第四大桥索夹的定位测量  

Locating cable tongs of the Fourth Nanjing Yangtze River Bridge

作　　者：李支彬[1] 黄腾[1] 康建松[1] 刘岭[1] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098

出　　处：《测绘工程》2012年第5期53-55,共3页Engineering of Surveying and Mapping

摘　　要：以南京长江第四大桥索夹放样为例,介绍该桥索夹位置计算和测量放样的基本方法和流程。分析影响悬索桥索夹放样精度的因素,并加以修正或消除,用以提高索夹放样精度。实践证明本桥索夹放样方法简单、可靠,满足设计要求。Taking cable tongs stakingout of the Fourth Nanjing Yangtze River Bridge as the case, it presents the basic method and process of the calculation of cable tongs position and the stakingout. Analysis is made on the factors that affect the accuracy of suspension bridge cable tongs and the countermeasures. Practice has proved that the method of cable tongs lofting is simple, reliable, and complies with the design require- ments.

关 键 词：悬索桥 索夹 放样 投影改正 

分 类 号：P207[天文地球—测绘科学与技术]