Using measured rotation on a beam to detect changes in its structural condition

C. McGeown, F. Huseynov, D. Hester, P. McGetrick, E. OBrien, V. Pakrashi
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引用次数: 6

Abstract

ABSTRACT A recent survey of Europe’s highway infrastructure has concluded that almost half of Europe’s bridges are nearing the end of their design live. Work in the wider Structural Health Monitoring sector is aiming to develop reliable and cost-effective methods for verifying condition, remaining service life and safety of ageing structures. Most bridge condition assessment methods are based on deflection, acceleration or strain measurements. This paper looks at the possibility of using rotation measurements as a main parameter to identify damage. This study looks at numerical analyses of a moving point load on a one-dimensional bridge model to provide the theoretical basis of the proposed damage detection method. It is shown that when local damage occurs, even when it is remote from a sensor location, it results in an increase in the magnitude of rotation measurements. This study looks at how best to exploit this fact for damage detection. A number of damage scenarios, sensor locations, and load arrangements are investigated in this study and their influence on the ability of the algorithm to detect damage are reported.
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使用梁上测量的旋转来检测其结构条件的变化
最近一项关于欧洲高速公路基础设施的调查显示,欧洲近一半的桥梁已接近其设计寿命。更广泛的结构健康监测领域的工作旨在开发可靠和具有成本效益的方法来验证老化结构的状态、剩余使用寿命和安全性。大多数桥梁状态评估方法都是基于挠度、加速度或应变测量。本文着眼于使用旋转测量作为识别损伤的主要参数的可能性。本文通过对一维桥梁模型动点荷载的数值分析,为所提出的损伤检测方法提供理论依据。结果表明,当局部损伤发生时,即使它远离传感器位置,也会导致旋转测量值的增加。本研究着眼于如何最好地利用这一事实进行损伤检测。在本研究中,研究了许多损伤场景、传感器位置和负载安排,并报告了它们对算法检测损伤能力的影响。
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来源期刊
CiteScore
3.90
自引率
9.50%
发文量
24
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