摘要
结合南京长江三桥钢索塔的施工测量实践,模拟现场环境进行夜间江面单向三角高程大气折光的试验研究,并对大气折光系数的变化规律进行分析,提出了利用已知精密高差求夜间江面大气折光系数的方法。对指导夜间钢索塔的拼装测量,以及提高三角高程测量的精度有一定的实用价值。
Combined with the construction survey practice of steel-pylon in the third Yangtse River bridge of Nanjing, though the experiment of one-way trigonometric leveling astronomical refraction above the river at night simulating the on-the-spot environment, the changing regulanity of astronomical refraction quotiety was analyzed, and the ways of reducing the effct that astronomical refraction made on the precision of the bigonometic leveling were introduced. The essay aimed at guiding the assembly of the steel-pylon at night. The conclusions are practical to enhance the precision of bigohometric leveling.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第3期107-110,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
南京林业大学"十五"人才基金项目
关键词
施工测量
大气折光
三角高程
南京长江三桥
Construction survey
Astronomical refraction
Trigonometric leveling
The thirdYangtse River bridge of Nanjing
