Structural health monitoring research under varying temperature condition: a review
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ORIGINAL PAPER
Structural health monitoring research under varying temperature condition: a review Qinghua Han1 · Qian Ma2 · Jie Xu1 · Ming Liu3 Received: 14 June 2020 / Revised: 11 September 2020 / Accepted: 9 October 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Suffering from solar radiation, day–night replacement and seasonal changes, the structure will produce notable temperature behaviour, which has a vital effect on the long-term process of the health monitoring. Previous studies show that there is a significant correlation between the measuring responses and temperature from health monitoring systems. To analyse the structural state more accurately, much literature employed health monitoring methods considering temperature effects. This paper reviews technical research concerning health monitoring of civil structures under varying temperature. Firstly, the correlation researches of structural measuring responses (dynamic and static responses) and temperature are reviewed, which includes the researches of the influence mechanism and the data statistics, and the studies of the influence of nonuniform temperature on responses are also reviewed. In addition, different types of separation and forecast methods of the temperature-induced part of the structural responses data are summarized, followed by a brief summary of benefits and drawbacks of these methods. Lastly, the recently proposed process frameworks of damage assessment considering temperature effects are also introduced. Keywords Structural health monitoring · Temperature effect · Damage detection
1 Introduction During the long-term service life, affected by comprehensive factors, large infrastructures (e.g., bridges and buildings, etc.) suffer from damage accumulation and resistance * Jie Xu [email protected] Qinghua Han [email protected] Qian Ma [email protected] Ming Liu [email protected] 1
Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake Administration, Key Laboratory of Coast Civil Structure Safety of Ministry of Education, School of Civil Engineering, Tianjin University, Tianjin 300350, China
2
Structural Engineering, School of Civil Engineering, Tianjin University, Tianjin 300350, China
3
Civil Engineering, School of Civil Engineering, Tianjin University, Tianjin 300350, China
deterioration, or even collapse in some severe cases. Structural health monitoring (SHM) technology is a significant approach to ensure the safety and reliability of the structures, which uses the continuous and real-time monitoring data to identify structural damage and track structural integrity [1, 2]. In the past few decades, SHM was one of the focus areas of civil engineering, and a large number of methods were proposed based on the vibration responses (e.g., acceleration, frequency, mode, etc.) and the static responses (e.g., static displacement, stress, strain, etc.) [3–6]. Ultimately, SHM technology is an inverse process of structural design and verification reflecting the
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