Abstract
The preservation and definition of the correct retrofitting interventions of historic masonry buildings represents a relevant topic nowadays, especially in a country characterized by high seismicity zones. Considering the Italian Cultural Heritage, most of these buildings are constructed in ancient unreinforced masonry (URM) and showed a high level of vulnerability during the recent 2009 (L’Aquila), 2012 (Emilia Romagna) and 2016 (Centro Italia) earthquakes. In this paper, the seismic assessment of an historic masonry building damaged during 2016 Centro Italia seismic event is presented considering different types of retrofitting interventions. Starting from the results obtained by the post-earthquake survey, different finite element models have been implemented to perform linear and non-linear analyses useful to understand the seismic behaviour of the building and to define the appropriate retrofitting interventions. In particular, reinforced plaster layer and cement-based grout injections have been applied in each masonry wall of the building in order to improve their horizontal load-bearing capacity, and an additional wall made with Poroton blocks and M10 cement mortar has been built adjacent to the central stairwell. In addition, in view of the need to replace the roof seriously damaged during the seismic event, a cross-laminated roof solution characterized by a thickness equal to 14 cm (composed by seven layers, each 2 cm thick) has been proposed. The results show that the proposed retrofitting interventions have led to a significant improvement in the seismic behaviour of the building.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference36 articles.
1. Damage and performance evaluation of masonry churches in the 2009 L’Aquila earthquake;Eng. Fail. Anal.,2013
2. Damage probability matrices for three-nave masonry churches in Abruzzi after the 2009 L’Aquila earthquake;Int. J. Archit. Herit.,2016
3. Field observations and failure analysis of the Basilica S. Maria di Collemaggio after the 2009 L’Aquila earthquake;Eng. Fail. Anal.,2013
4. Collapse of the clock tower in Finale Emilia after the May 2012 Emilia-Romagna earthquake sequence: Numerical insight;Eng. Struct.,2014
5. Seismic sequence of 2016–2017: Linear and non-linear interpretation models for evolution of damage in San Francesco church, Centro Italia;Eng. Struct.,2020
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献