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Damage Localization Method Using Vertical Support Reaction Data for Real-world Continuous Bridge

机译：使用垂直支持反应数据进行真实世界连续桥梁的损伤定位方法

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摘要

Damage localization of real-world continuous bridges with original random uncertainty is studied in this paper. By employing influence line analysis, an index termed as 'Difference Index of Influence Line for Vertical support reaction, DIILSR' has been presented. A damage localization method based on DIILSR then has been established. Significant attraction of this method is that comparatively small quantity of measurements is required because the number of bridge bearing is usually small. Damage position can be detected by comparing two DIILSR graphs before and after damage. If the slopes of two attachment lines between one point (x_2=x'+m) and its two adjacent points change, it can be known that damage occurs within the region [x', x'+ m] or [l- x'- m, l-x']. The effectiveness of the proposed method is demonstrated by a numerical simulation performed on a bridge with multiple damages.
机译：本文研究了具有原始随机性不确定性的现实世界连续桥的损坏定位。通过采用影响线分析，已经介绍了作为“垂直支持反应的影响线的差异指数，Diilsr”所谓的指数。已经建立了基于Diilsr的损伤定位方法。这种方法的显着吸引力是需要相对较小的测量，因为桥轴承的数量通常很小。通过比较损坏前后的两种DiILSR图形可以检测损坏位置。如果在一个点之间的两个附接线的斜率（x_2 = x'+ m）及其两个相邻点变化，则可以知道，在区域[x'，x'+ m]或[l-x'中发生损坏 - m，l-x'。通过在具有多种损伤的桥梁上执行的数值模拟来证明所提出的方法的有效性。

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