Vulnerability Assessment of Unreinforced Masonry Churches Following the 2010–2011 Canterbury Earthquake Sequence. Issue 6 (18th August 2017)

• Record Type: Journal Article
• Authors: Marotta, Alessandra; Sorrentino, Luigi; Liberatore, Domenico; Ingham, Jason M.
• Is Part Of: Journal of earthquake engineering. Volume 21:Issue 6(2017)
• Page Start: 912
• Page End: 934
• Publication Date: 2017-08-18
• Subjects: Unreinforced Masonry Churches -- Damage Probability Matrices -- Vulnerability Assessment -- Vulnerability Modifiers -- Statistical Regressions; Earthquake engineering -- Periodicals; 624.1762
• DOI: 10.1080/13632469.2016.1206761
• Languages: English
• ISSNs: 1363-2469

Abstract

Abstract : The 2010–2011 Canterbury, New Zealand earthquake sequence caused extensive damage to unreinforced masonry churches. A sample of 80 affected buildings was analysed and their performance statistically interpreted. Structural behaviour is described in terms of mechanisms affecting the so-called macro-elements, and damage probability matrices are computed. Regression models correlating mean damage level against macroseismic intensity are also developed for all observed mechanisms, improving the initial simple-linear formulations through use of multiple-linear regressions accounting for vulnerability modifiers, whose influence is evaluated via statistical procedures. Results presented herein will support the future development of predictive tools for decision-makers, also contributing to seismic vulnerability mitigation at a territorial scale.