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Discussion on the modification method for defective data of anchor load cells

ZHOU Qi, LI Gang and WANGMi- xue   

  • Online:2006-12-28 Published:2006-12-28

弦式锚索测力计数据缺陷修正方法探讨

周启1, 李刚2, 王秘学1   

  1. 1. 长江水利委员会长江勘测规划设计研究院, 湖北武汉 430010; 2. 中国地质大学, 湖北武汉 430074

Abstract: Anchor load cells are widely used to find out stress of anchor loads and evaluate the stability of slopes. In some situation, the wire of anchor load cell does not vibrate after being damaged, so it is necessary to correct the data with proper method. In this paper, the author analyzed the mechanism of anchor load cells, suggested two methods for data modification and compared the result with back- analysis method. Where the errors originated from was analyzed, too. The result indicated that the frequency percentage method was a concise and accurate method which could meet the engineering requirement.

摘要: 锚索测力计是了解锚索应力及评价边坡稳定性的重要手段。弦式锚索测力计经常会有弦被损坏而不起振的情况,因此对数据进行修正十分必要。本文分析了锚索受力机理, 提出了两种数据修正方法, 采用逆向分析对修正效果进行了比较, 并对误差来源进行了分析。结论表明, 频率百分比法是一种简便、准确的修正方法, 能够满足工程应用。