天顶方向法及其在江阴长江公路大桥北塔柱施工测量中的应用

Plumb Direction Method and Its Application to Setting-up Survey for North Pillar of Jiangyin Changjiang Bridge

分析了天顶方向法的原理及精度 ,阐述了天顶方向法用于江阴长江公路大桥北塔柱测量放样的准备及施测过程 。

Principle and precision of plumb direction method are analyzed. Preparation and process of setting-up survey for north pillar of Jiangyin Changjiang Bridge are elaborated. And some suggestions are proposed in this paper.