高精度静力水准测量系统在桥梁变形监测中的应用

摘要

针对目前桥梁变形监测技术存在精度低、无法实现实时监测和易受环境影响等缺点,提出利用基于CCD静力水准仪传感器的自动化监测系统对桥梁变形进行监测.基于对昆明市虹桥路匝道桥施工对既有桥梁结构影响的研究,采用静力水准仪系统对既有桥梁变形进行监测,对该桥不同位置设21个测点,经过长达20 d的监测,变形监测频率为4次/d,共得到1 680组数据.通过选取典型测点的监测数据进行分析,并与精密水准测量进行数据对比,可得静力水准仪系统具有测量精度高、自动化程度高、稳定性好等特点,在桥梁变形监测领域具有较高的推广价值.%Aiming at the shortcomings of bridge deformation monitoring technology,such as low precision,real-time monitoring and environmental impact,it is proposed to monitor the deformation of bridge by using the automatic system based on CCD static level sensor.Based on the study of the influence of the construction of the Hongqiao Road Ramp Bridge on the existing bridge structure,the static level system is used to monitor the deformation of the existing bridge,and 21 points are measured at different positions of the bridge.After 20 days of monitoring,Deformation monitoring frequency of 4 times a day,a total of 1 680 sets of data.By comparing the monitoring data of the typical measuring points and comparing with the data measured by the precision leveling,the static level system can be used in the field of bridge deformation monitoring with high measurement precision,high degree of automation and good stability.In the field of bridge deformation monitoring has a high promotional value.