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首页> 外文会议>International conference on sustainable development of critical infrastructure 2014 >Damage Localization Method Using Vertical Support Reaction Data for Real-world Continuous Bridge
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Damage Localization Method Using Vertical Support Reaction Data for Real-world Continuous Bridge

机译：竖向支撑反应数据的真实连续桥梁损伤定位方法

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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不确定性的连续世界桥梁的损伤定位。通过采用影响线分析，提出了一种指数，称为“垂直支撑反应的影响线差指数，DIILSR”。建立了基于DIILSR的损伤定位方法。该方法的显着吸引力在于，由于桥梁支座的数量通常很少，因此需要进行相对较少的测量。可以通过比较损坏前后的两个DIILSR图来检测损坏位置。如果一个点（x_2 = x'+ m）和它的两个相邻点之间的两条连接线的斜率发生变化，则可以知道在[x'，x'+ m]或[l-x' -m，l-x']。通过对桥梁进行多次破坏的数值模拟，证明了该方法的有效性。

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