Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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Access Right: Open AccessAuthor: search.filters.author.Burd, Harvey

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  • Article
    Citation - WoS: 5
    Citation - Scopus: 5
    Estimation of Settlement-Induced Damage in Masonry Buildings From Displacement Measurements
    (Pergamon-elsevier Science Ltd, 2025) Liu, Yiyan; Burd, Harvey; Gulen, Derya Burcu; Dalgic, Korhan Deniz; Gilson, Ben; Ilki, Alper; Acikgoz, Sinan
    In current engineering practice, building damage due to nearby ground excavation activities is typically quantified by processing displacement measurements. Building displacements at discrete points are used to determine deflection measures (such as angular distortion) which are then employed to estimate building strains using elastic beam models; damage is subsequently categorised according to the limiting tensile strain criteria. The reliability of this procedure relies on the extent to which the equivalent beam models employed in the analysis provide a realistic representation of the building behaviour. However, few published investigations are available on this issue. The current paper provides an appraisal of displacement-based building damage estimation techniques by employing digital image correlation displacement data collected from a recent experimental campaign on the settlement response of three half-scale masonry buildings. The results demonstrate that the treatment of buildings with equivalent beam models does not capture building deformation kinematics, potentially leading to inaccurate estimations of damage severity and location. An alternative strain interpretation procedure, inspired by an equivalent frame idealisation of a building fa & ccedil;ade with openings, is proposed. This procedure, which uses a limited number of displacement measurements, offers a robust interpretation of strains. Its effectiveness in estimating damage is assessed through experimental data. It is demonstrated that the current limiting tensile strain criteria need to be modified to provide a reliable estimation of crack widths when using the equivalent frame idealisation.
  • Conference Object
    Citation - Scopus: 2
    A Critical Evaluation of Proxy Measures Used To Quantify Excavation-Induced Damage in Masonry Buildings
    (CRC Press, 2022) Liu, Yiyan; Gülen, Burcu; Açıkgöz, Sinan; Burd, Harvey; Gilson, Ben; İlki, Alper; Dalgıç, Korhan Deniz
    Building response during nearby excavation activities (e.g., tunnelling or deep excavations) is traditionally monitored by conducting displacement measurements. These displacement data are then post-processed to determine proxy measures that are correlated to damage categories. For masonry buildings, commonly-used proxy measures include building deflection ratio, horizontal relative displacement and angular distortion; simple mechanical models and empirical rules are used to define limiting values for these proxy measures to identify and control the level of cracking in buildings during construction. This procedure has a profound influence on mitigation and construction activities, and a critical evaluation of its veracity is needed. To this end, results from a recent experimental campaign on the settlement response of half-scale masonry buildings are examined in this paper. During these tests, detailed optical measurements were conducted, allowing the calculation of absolute displacements across the façade, as well as crack opening displacements at specific locations. These measurements facilitate a direct comparison between the actual observed damage and the damage category that is indicated by the proxy measures. The comparisons highlight the limitations of existing techniques. A discussion is provided on how proxy measure calculations can be improved to deliver more reliable indications of building damage. © 2022 the Author(s).