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Title: A critical evaluation of proxy measures used to quantify excavation-induced damage in masonry buildings
Authors: Liu, Yiyan
Gülen, Burcu
Açıkgöz, Sinan
Burd, Harvey
Gilson, Ben
İlki, Alper
Dalgıç, Korhan Deniz
Keywords: Buildings
Construction industry
Displacement measurement
Masonry construction
Critical evaluation
Publisher: CRC Press
Abstract: 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).
Description: 3rd International Symposium on the Preservation of Monuments and Historic Sites, IS NAPOLI 2022--22 June 2022 through 24 June 2022
ISBN: 978-103231262-0
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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