小湾水电站高缆基础拱桥施工安全监测

Safety monitoring of the construction of high cable foundation of arch bridge on Xiaowan left bank

在小湾左岸高缆基础拱桥施工中首次对板拱施工的脚手钢管排架进行了安全监测,得到了理想的变形和杆件应变时程曲线。监测中提出了各变形和应变测点在各施工工序的理论分析限制值,将监测结果与之进行比较和综合分析,进而决策是否报警。成果表明,监测与理论分析基本一致。

The safety monitoring on the scaffold steel-tube shaft was firstly made in the construction of high cable foundation of arch bridge on Xiaowan left bank and the ideal deformation and the strain history curve of bar elements. In the monitoring, the theoretical analysis limitations of each deformation and strain key point in different construction procedures were put forward. The monitoring results and theoretical limitations were compared and analyzed and then that alarm is given or not was decided. The results showed that the monitoring results are basically consistent with theoretical analysis limitations.