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首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >Damage Assessment by Matched Damage Processing ― Bridge Structures Subjected to Traffic Loading
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Damage Assessment by Matched Damage Processing ― Bridge Structures Subjected to Traffic Loading

机译：通过匹配损伤处理进行损伤评估―交通荷载作用下的桥梁结构

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摘要

This study introduces a new technique, named matched damage processing (MDP) technique, to perform damage detection, localization, and severity estimation. The MDP technique builds upon the concept of matched field processing already developed in the underwater acoustics community. In short, the MDP technique compares measured responses collected from the physical structure with multiple modeled results calculated based on various damage locations and severity. The comparison is displayed in a contour or image plot with damage location and severity as the independent coordinates. The concept, effectiveness and robustness of the MDP technique are numerically demonstrated via a simple example where a simply supported beam is used to model a bridge and the traffic loading is modeled as a constant weight moving with constant speed across the bridge. A localized reduction of structural stiffness is applied to represent the occurrence of damage to the bridge. According to the numerical results, it is found that the MDP technique is effective and robust to estimate location and severity of structural deterioration.
机译：这项研究引入了一种新技术，称为匹配损伤处理（MDP）技术，以执行损伤检测，定位和严重性估计。 MDP技术建立在水下声学社区已经开发的匹配场处理概念的基础上。简而言之，MDP技术将从物理结构收集的测量响应与基于各种损坏位置和严重性计算的多个建模结果进行比较。比较以轮廓图或图像图的形式显示，其中损坏位置和严重性为独立坐标。 MDP技术的概念，有效性和鲁棒性通过一个简单的例子得到了数值证明，其中一个简单支撑的梁用于建模桥梁，交通负荷被建模为以恒定的重量以恒定的速度在桥梁上移动。应用结构刚度的局部减小来表示桥梁损坏的发生。根据数值结果，发现MDP技术对于估计结构劣化的位置和严重性是有效且稳健的。

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