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Multi-hazard reliability assessment of historical brick minarets

Multi-hazard reliability assessment of historical brick minarets Historical brick minarets are the main elements of Iranian architecture and exist throughout Iran in different dimensions and heights. In this paper, the structural behavior of the Gaskar brick minaret, in the north of Iran, with a height of 16.11 m, has been studied against wind and earthquake hazards. Accurate discretization of finite element (FE) model of the minaret is performed to achieve accurate structural results. Then the wind load (WL) and earthquake load demand are determined according to the national building regulations, and technical literature then applied to the structure. Macro modeling strategies were utilized to modeling the masonry materials environment. Nonlinear properties are also assigned to masonry materials. The equivalent static WL is considered according to national building regulations. Three strong ground motion earthquake records are considered as seismic loading. In order to probabilistic seismic safety analysis of minaret, the load-resistance method was used for reliability analysis. The elasticity modulus, tensile and compressive strength of materials used as random variables generated by Monte-Carlo simulation (MCS) for 10% coefficient of variations. Peak displacement response (PDR) of the minaret as implicit limit state (LS) function is determined under far-field ground motions. The seismic reliability index (RI) is quantified using the design of experiment (DOE) due to its time-consuming computational costs. The results showed that the minaret is safe against design WL and loading of the strongest wind recorded in the world. The seismic reliability results indicate that the minaret is at risk of slight damage. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Multi-hazard reliability assessment of historical brick minarets

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References (36)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-021-00148-9
Publisher site
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Abstract

Historical brick minarets are the main elements of Iranian architecture and exist throughout Iran in different dimensions and heights. In this paper, the structural behavior of the Gaskar brick minaret, in the north of Iran, with a height of 16.11 m, has been studied against wind and earthquake hazards. Accurate discretization of finite element (FE) model of the minaret is performed to achieve accurate structural results. Then the wind load (WL) and earthquake load demand are determined according to the national building regulations, and technical literature then applied to the structure. Macro modeling strategies were utilized to modeling the masonry materials environment. Nonlinear properties are also assigned to masonry materials. The equivalent static WL is considered according to national building regulations. Three strong ground motion earthquake records are considered as seismic loading. In order to probabilistic seismic safety analysis of minaret, the load-resistance method was used for reliability analysis. The elasticity modulus, tensile and compressive strength of materials used as random variables generated by Monte-Carlo simulation (MCS) for 10% coefficient of variations. Peak displacement response (PDR) of the minaret as implicit limit state (LS) function is determined under far-field ground motions. The seismic reliability index (RI) is quantified using the design of experiment (DOE) due to its time-consuming computational costs. The results showed that the minaret is safe against design WL and loading of the strongest wind recorded in the world. The seismic reliability results indicate that the minaret is at risk of slight damage.

Journal

Journal of Building Pathology and Rehabilitation – Springer Journals

Published: Dec 1, 2022

Keywords: Probability of failure; Seismic reliability index; Wind load; Meta model (MM); Design of experiment

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