期刊
JOURNAL OF EARTHQUAKE ENGINEERING
卷 21, 期 6, 页码 912-934出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632469.2016.1206761
关键词
Unreinforced Masonry Churches; Damage Probability Matrices; Vulnerability Assessment; Vulnerability Modifiers; Statistical Regressions
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.
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