Seismic vulnerability of leaning masonry towers located in Emilia-Romagna region, Italy:FE analyses of four case studies

2016 ◽  
Author(s):  
Gabriele Milani ◽  
Rafael Shehu ◽  
Marco Valente
Keyword(s):  
Case Studies ◽  
Seismic Vulnerability ◽  
Masonry Towers ◽  
Emilia Romagna Region

Seismic Risk Mitigation of Historical Masonry Towers by Means of Prestressing Devices

2010 ◽  
Vol 133-134 ◽  
pp. 843-848 ◽  
Author(s):  
Adolfo Preciado Quiroz ◽  
Silvio T. Sperbeck ◽  
Harald Budelmann ◽  
Gianni Bartoli ◽  
Elham Bazrafshan
Keyword(s):  
Seismic Risk ◽  
Seismic Vulnerability ◽  
Risk Mitigation ◽  
Numerical Models ◽  
Failure Mechanisms ◽  
Masonry Towers ◽  
Seismic Risk Mitigation ◽  
Historical Masonry ◽  
Observed Damage ◽  
And Behavior

This work presents the investigation of the efficiency of different prestressing devices as a rehabilitation measure for the seismic risk mitigation of historical masonry towers. As a first phase, the seismic vulnerability of theoretical masonry towers was assessed by means of numerical models validated with information from the literature, observed damage and behavior of these structures due to passed earthquakes (crack pattern and failure mechanisms), and mainly taking into account the engineering experience. Afterwards, the validated models were rehabilitated with different prestressing devices; analyzing the results and concluding which device or the combination of them improved in a better way the seismic performance of the masonry towers. Finally, the methodology will be applied in two historical masonry towers located in seismic areas; the medieval tower “Torre Grossa” of San Gimignano, Italy, and one of the bell towers of the Cathedral of Colima, Mexico.

Fundamental aspects on the seismic vulnerability of ancient masonry towers and retrofitting techniques

2015 ◽  
Vol 9 (2) ◽  
pp. 339-352 ◽  
Author(s):  
Adolfo Preciado ◽  
Gianni Bartoli ◽  
Harald Budelmann
Keyword(s):  
Seismic Vulnerability ◽  
Masonry Towers

Historical Masonry Towers: Overview, Seismic Vulnerability, Behavior During an Earthquake, Seismic Strengthening

2020 ◽  
pp. 49-66
Author(s):  
Ziad Ahmad Aldrebi
Keyword(s):  
Seismic Behavior ◽  
Seismic Vulnerability ◽  
Masonry Structures ◽  
Seismic Strengthening ◽  
Historic Masonry ◽  
Masonry Towers ◽  
Historical Masonry

The article provides an overview of historic masonry towers such as the minarets of mosques, bell towers of churches, clock towers, leaning towers, so-called "falling towers" and ruined towers. It was considered what kind of masonry, what kind of mortars the Romans, the ancient Egyptians, the Inca and Mayan cultures in America used. Some aspects of seismic vulnerability of masonry towers were studied. The modes of destruction of thin masonry structures, mechanisms of destruction of masonry in towers are considered, the seismic behavior of historical masonry towers are considered, and one of the methods of seismic strengthening using an innovative "smart" material is presented.

scholarly journals Report on earthquake-induced failures of rural buildings aimed at future preservation strategies

2019 ◽  
Vol 50 (2) ◽  
pp. 66-79 ◽  
Author(s):  
Marco Bovo ◽  
Alberto Barbaresi ◽  
Daniele Torreggiani ◽  
Patrizia Tassinari
Keyword(s):  
Seismic Vulnerability ◽  
Rural Landscape ◽  
Historical Buildings ◽  
Building Stock ◽  
Rural Buildings ◽  
Rapid Changes ◽  
Emilia Romagna Region ◽  
Speed Up ◽  
Residential Use ◽  
Intended Use

The rural landscape is undergoing rapid changes, and catastrophic events, such as earthquakes, can speed up this mutation, bringing to a loss of its traditional signs. In May 2012, two strong seismic events hit the Emilia Romagna region, in northern Italy. Those earthquakes caused several damages and collapses to historical rural buildings, highlighting their high seismic vulnerability. In this paper, damages and collapses collected in the aftermath surveys on 22 rural historical buildings, are presented and commented. It was observed that in the area hit by the earthquake few recurrent typologies are present, and buildings of the same typology showed similar damage mechanisms. Therefore, in order to define the most typical damages affecting rural constructions, the building stock has been classified in different categories, based on plan distribution and intended use of each building. The first criterion suggests considering isolated and composed buildings. The second separates the structures in dwellings for residential use, stable-haylofts and buildings used for other minor services. The outcomes presented in this paper allowed to identify the rural building typologies most vulnerable to earthquakes and to define recurring deficiencies for the various categories. In general, the main reasons of the collapses can be ascribed to lack of effective connections between orthogonal walls, poor connections between floor elements and walls, and excessive flexibility of floor diaphragms.

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