惠州合生大桥塔梁同步施工监控技术

The Monitoring Technology on Cable-stayed Bridge under Tower-girder Construction in Step

合生大桥为独塔,采用塔梁同步施工方法,将理论计算得到的数据以施工控制指令的形式下发用以指导施工,再从施工过程反馈调整计算参数。斜拉桥施工监控过程中需要监测的项目包括主梁的线形(标高和轴线)、斜拉索拉力、索塔的偏位、索塔控制截面的应力、主梁控制截面的应力、墩柱的沉降等,本文介绍了施工过程的监控原理、方法和取得的成果。

This paper researchs on the monitoring technology on cable-stayed bridge under tower-girder construction in step. It describes the major projects need to monitor and monitoring methods for construction of cable-stayed bridge in detail. And the method that it can achieve the parameter optimization with contrasting variation on the monitoring datas and analyzing datas is also discussed. In actually, some datas show that the monitoring technology can lead to a high precision of cable-stayed bridge construction.