Model-Based Method for Local Monitoring of Steel Structures

Arne Goedeke
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Abstract

This paper introduces a novel method for monitoring steel structures for fatigue cracks. The method combines measurements from strain gauges (SG) with pre-conducted structural simulations to quantitatively and precisely determine the position and length of cracks in critical areas. Experimental results validate the reliability and effectiveness of this approach, demonstrating its ability to enable early crack detection. A key advantage of this method is its simplicity: it requires only three strain gauge bridges (one reference SG and two for crack detection). This makes the approach both cost-efficient and flexible. It is particularly suited for localized monitoring tasks and offers significant benefits over other, often more complex, methods.

Abstract Image

基于模型的钢结构局部监测方法
本文介绍了一种监测钢结构疲劳裂纹的新方法。该方法将应变计(SG)的测量结果与预先进行的结构模拟相结合,以定量和精确地确定关键区域裂缝的位置和长度。实验结果验证了该方法的可靠性和有效性,证明了该方法能够实现早期裂纹检测。这种方法的一个主要优点是它的简单性:它只需要三个应变测量桥(一个参考SG和两个用于裂纹检测)。这使得该方法既具有成本效益又具有灵活性。它特别适合于局部监视任务,并且比其他通常更复杂的方法具有显著的优势。
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