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  1. Article: A Review on the Prevalence of Poor Mental Health in the Construction Industry.

    Blair Winkler, Rachel / Middleton, Campbell / Remes, Olivia

    Healthcare (Basel, Switzerland)

    2024  Volume 12, Issue 5

    Abstract: A plethora of studies on the prevalence of poor mental health have been undertaken in the general population. Nevertheless, an understanding of the prevalence of poor mental health in the context of high-risk settings, such as construction, is missing. ... ...

    Abstract A plethora of studies on the prevalence of poor mental health have been undertaken in the general population. Nevertheless, an understanding of the prevalence of poor mental health in the context of high-risk settings, such as construction, is missing. This is noteworthy as poor mental health is widespread in this context. Given that over 100 million people work in construction on a global scale, a better understanding of the burden of poor mental health in construction is needed. To this end, a review on the prevalence of key mental health-related conditions in construction was undertaken. Through this review, over 1000 papers were identified through PubMed and Google Scholar. After applying inclusion and exclusion criteria, a final set of 19 documents were included. Results showed that anxiety and depressive disorders, as well as psychological distress, have a high burden in construction. Vulnerable population subgroups (e.g., women, minority ethnic groups) were identified. Construction is a high-risk setting and despite this, the burden of poor mental health in this context is not given the importance it deserves. This review sheds light on the prevalence of key conditions, which are linked to high humanistic and economic burden. This review provides a foundation and useful starting point for further investigations, and results from this review may be used to inform future research, workplace interventions, and policy.
    Language English
    Publishing date 2024-02-29
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2721009-1
    ISSN 2227-9032
    ISSN 2227-9032
    DOI 10.3390/healthcare12050570
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Assessment of bridge natural frequency as an indicator of scour using centrifuge modelling.

    Kariyawasam, Kasun D / Middleton, Campbell R / Madabhushi, Gopal / Haigh, Stuart K / Talbot, James P

    Journal of civil structural health monitoring

    2020  Volume 10, Issue 5, Page(s) 861–881

    Abstract: One of the most prevalent causes of bridge failure around the world is "scour"-the gradual erosion of soil around a bridge foundation due to fast-flowing water. A reliable technique for monitoring scour would help bridge engineers take timely ... ...

    Abstract One of the most prevalent causes of bridge failure around the world is "scour"-the gradual erosion of soil around a bridge foundation due to fast-flowing water. A reliable technique for monitoring scour would help bridge engineers take timely countermeasures to safeguard against failure. Although vibration-based techniques for monitoring structural damage have had limited success, primarily due to insufficient sensitivity, these have tended to focus on the detection of local damage. High natural frequency sensitivity has recently been reported for scour damage. Previous experiments to investigate this have been limited as a result of the cost of full-scale testing and the fact that scaled-down soil-structure models tested outside a centrifuge do not adequately simulate full-scale behaviour. This paper describes the development of what is believed to be the first-ever centrifuge-testing programme to establish the sensitivity of bridge natural frequency to scour. A 1/60 scale model of a two-span integral bridge with 15 m spans was tested at varying levels of scour. For the fundamental mode of vibration, these tests found up to a 40% variation in natural frequency for 30% loss of embedment. Models of three other types of foundation, which represent a shallow pad foundation, a deep pile bent and a deep monopile, were also tested in the centrifuge at different scour levels. The shallow foundation model showed lower frequency sensitivity to scour than the deep foundation models. Another important finding is that the frequency sensitivity to "global scour" is slightly higher than the sensitivity to "local scour", for all foundation types. The level of frequency sensitivity (3.1-44% per scour depth equivalent to 30% of embedment of scour) detected in this experiment demonstrates the potential for using natural frequency as an indicator of both local and global scour of bridges, particularly those with deep foundations.
    Language English
    Publishing date 2020-07-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2592302-X
    ISSN 2190-5479 ; 2190-5452
    ISSN (online) 2190-5479
    ISSN 2190-5452
    DOI 10.1007/s13349-020-00420-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Remote monitoring to predict bridge scour failure using Interferometric Synthetic Aperture Radar (InSAR) stacking techniques

    Selvakumaran, Sivasakthy / Plank, Simon / Geiß, Christian / Rossi, Cristian / Middleton, Campbell

    International journal of applied earth observation and geoinformation. 2018 Dec., v. 73

    2018  

    Abstract: Scour is the removal of ground material in water bodies due to environmental changes in water flow. It particularly occurs at bridge piers and the holes formed can make bridges susceptible to collapse. The most common cause of bridge collapse is due to ... ...

    Abstract Scour is the removal of ground material in water bodies due to environmental changes in water flow. It particularly occurs at bridge piers and the holes formed can make bridges susceptible to collapse. The most common cause of bridge collapse is due to scour occurring during flooding, some failures causing loss of life and most resulting in significant transport disruption and economic loss. Consequently, failure of bridges due to scour is of great concern to bridge asset owners, and is currently very difficult to predict since conventional assessment methods foresee very resource-demanding monitoring efforts in situ. This paper presents evidence of how InSAR techniques can be used to monitor bridges at risk of scour, using Tadcaster Bridge, England, as a case study. Tadcaster Bridge suffered a partial collapse due to river scour on the evening of December 29th, 2015 following a period of severe rainfall and flooding. 48 TerraSAR-X scenes over the bridge from the two-year period prior to the collapse are analysed using the small baseline subset (SBAS) interferometric synthetic aperture radar (InSAR) approach. The study highlights a distinct movement in the region of the bridge where the collapse occurred prior to the actual event. This precursor to failure observed in the data over a month before actual collapse suggests the possible use of InSAR as a means of an early warning system in structural health monitoring of bridges at risk of scour.
    Keywords assets ; case studies ; interferometry ; rain ; risk ; rivers ; spatial data ; synthetic aperture radar ; water flow ; England
    Language English
    Dates of publication 2018-12
    Size p. 463-470.
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 1569-8432
    DOI 10.1016/j.jag.2018.07.004
    Database NAL-Catalogue (AGRICOLA)

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