【摘要】 分析悬索桥主缆施工过程中测量数据的影响因素及误差来源,介绍测量方法的应对调整方案。主缆线形基准索股测量无法使用几何水准,采取先进高精度测量全站仪器、只能单向三角测量,一台全站仪器进行单向三角测量如果出现粗差无法校对,同时测量的基准索股对温度变化、风力的大小、塔位的偏移等因素十分敏感,因此对测量方案进行调整,选择在无风或风力很小、温度稳定的夜间进行,用两台高精度的自动跟踪全站仪同步单向三角测量,使得测量任务能在短时间完成,满足悬索桥主缆施工控制精度要求。更多还原

【Abstract】 Through analyzing the impact factor and error recourse of surveying data during the construct-control of main cable of the suspended-cable, this paper introduces a surveying method and a corresponding adjust scheme. The basic rope linearity survey of main cable can not use leveling. Because a high precision omnipotence instrument can survey in one direction, it is difficult to collate if it exists error. At the same time, the basic surveying rope is very sensitive to the change of temperature, magnitude wind and the offset of the tower. So the adjusting to the surveying scheme is necessary to satisfy the precision requirement. Such as selecting the non-wind or little wind weather, selecting the night surveying due to the steady temperature, using two high precision omnipotence instruments at the same time etc.更多还原