Advances of Area-Wise Distributed Monitoring Using Long Gauge Sensing Techniques

Zhou, Liming; Zhang, Jian

doi:10.3390/s19051038

Cited by 3 publications

(2 citation statements)

References 65 publications

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“…In bridge long-term health monitoring, random traffic load belongs to ambient excitation. Under moving vehicle excitation, the dynamic characteristics of the bridge are identified using the output-only method or the multi-input multi-output method [60][61][62], the latter of which is used in mobile impact vibration testing [63][64][65]. In addition, Yang et al [66,67] proposed testing bridge frequency using vehicle response, and relevant research is being further promoted [68].…”

Section: Moving Vehicle Excitationmentioning

confidence: 99%

A Review of Vibration-Based Scour Diagnosis Methods for Bridge Foundation

et al. 2023

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Foundation scour poses a serious threat to bridge safety in the whole life cycle and leads to many bridge failure incidents. Recently, as an important subfield of bridge structural health monitoring, vibration-based scour diagnosis methods have garnered widespread attention, particularly due to their rapid and low-cost features, which overcomes the difficulties of complex equipment installation associated with the traditional approaches. Recent advances of this method within the last decade are reviewed in this paper. Firstly, the principle of scour diagnosis and vibration excitation methods are introduced. Then, existing qualitative and quantitative studies on scour diagnosis are reviewed, respectively. The former refers to identifying the scour location based on the bridge dynamic characteristics or dynamic response changes, and the latter refers to identifying scour depth based on model updating or machine learning methods. Based on the above review, some important but neglected issues are summarized and discussed in depth, and some challenges and future trends are proposed, including innovative excitation methods, mitigation of environmental conditions interference, soil–structure interaction prediction and application of machine learning techniques.

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Section: Moving Vehicle Excitationmentioning

confidence: 99%

A Review of Vibration-Based Scour Diagnosis Methods for Bridge Foundation

et al. 2023

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“…With the absence of suitable sensors for accurate distributed monitoring, a concept of long-gauge sensing and its corresponding sensor networks have been developed (Geiger et al, 1995; Liang et al, 2005; Spillman and Huston, 2000; Zhou and Zhang, 2019). As shown in Figure 1(a), handling of an embedded tube inside which a bare optic fiber with FBG is sleeved and fixed at two ends to ensure the measured value represents the average strain over the gauge length.…”

Section: Long-gauge Fbg Sensing Technologymentioning

confidence: 99%

Deflection distribution estimation of the main arch of arch bridges based on long-gauge fiber optic sensing technology

Zhang

Sun

Wang

et al. 2019

Advances in Structural Engineering

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Deflection of the main arch of arch bridges is one of the main indices for supporting the alignment after construction and evaluating the structural performance. The existing sensing technology and analysis method for deflection monitoring have developed, but it is still difficult to monitor the deflection of the main arch of a long-span arch bridge with great height difference between measuring points. On the contrary, in recent years, with the outstanding advantages of fiber optic sensing technologies, a long-gauge fiber Bragg grating sensing technology has been used in structural health monitoring due to its characteristics, including reflecting the macro and micro information and being connected into network. For these reasons, the long-gauge fiber Bragg grating sensing technology is proposed to develop a method to monitor the deflection of the main arch of arch bridges. A curvature load method for deflection distribution estimation using strain measurements is proposed. It deduces the expression of the complex relation between the strain and the deformation on the main arch element and then separates the coupled strain on the element through the specific sensor layout. A series of simulation tests of the deck arch bridge, half-through bridge, and through arch bridge was conducted. It is concluded that the proposed method can not only be applied to these long-span arch bridges but also can identify the static and dynamic deflections of the main arch effectively.

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An In-Depth Survey Demystifying the Internet of Things (IoT) in the Construction Industry: Unfolding New Dimensions

et al. 2023

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In this digital era, many industries have widely adopted the Internet of Things (IoT), yet its implementation in the construction industry is relatively limited. Integration of Construction 4.0 drivers, such as business information modeling (BIM), procurement, construction safety, and structural health monitoring (SHM), with IoT devices, provides an effective framework for applications to enhance construction and operational efficiencies. IoT and Construction 4.0 driver integration research, however, is still in its infancy. It is necessary to understand the present state of IoT adoption in the Construction 4.0 context. This paper presented a comprehensive review to identify the IoT adoption status in the Construction 4.0 areas. Furthermore, this work highlighted the potential roadblocks to IoT’s seamless adoption that are unique to the areas of Construction 4.0 in developing countries. Altogether, 257 research articles were reviewed to present the current state of IoT adoption in developed and developing countries, as well as the topmost barriers encountered in integrating IoT with the key Construction 4.0 drivers. This study aimed to provide a reference for construction managers to observe challenges, professionals to explore the hybridization possibilities of IoT in the context of Construction 4.0, and laymen to understand the high-level scientific research that underpins IoT in the construction industry.

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Advances of Area-Wise Distributed Monitoring Using Long Gauge Sensing Techniques

Cited by 3 publications

References 65 publications

A Review of Vibration-Based Scour Diagnosis Methods for Bridge Foundation

A Review of Vibration-Based Scour Diagnosis Methods for Bridge Foundation

Deflection distribution estimation of the main arch of arch bridges based on long-gauge fiber optic sensing technology

An In-Depth Survey Demystifying the Internet of Things (IoT) in the Construction Industry: Unfolding New Dimensions

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