某港区顺岸码头形变监测成果的精度分析

Accuracy analysis of inspection accomplishment about certain port area which is along bank type pier changes

某港区顺岸的桩基码头平台在施工期间存在向海侧方向位移的现象,为此采用光学视准线法对其位移情况进行了监测,但监测成果与工程实际变形情况不甚相符。本文从监测成果质量分析入手,着重讨论了该测量方法在变形观测中可能产生的各项误差及其对监测点位移值测定精度的影响。分析表明,现行观测方法难以满足工程对位移监测的精度要求,变形资料缺乏可靠性,并进一步得出海工建筑物的位移监测不宜采用光学视准线法的结论。

Optical collimation line method is adopted in observing the monitoring of quay on piles at a port area. But the result does not accord with the actual changes of engineering. In this paper the authors discussed the errors in this method and the influence on accuracy of survey point. It was found that, after analysis,the accuracy is difficult to be controlled and the observation data are lack of reliability. Therefore, the conclusion is that monitoring to sea work building with this way is not good and proper.