Damage assessment of three medieval churches after the 2012 Emilia earthquake

The architectural heritage was severely damaged by the seismic sequence that occurred in Emilia (Northern Italy) in May 2012. This paper investigates the seismic behavior of three masonry churches that were damaged by the 2012 Emilia earthquake. The analyzed churches are located in the South-East area of the province of Mantua: they are representative of some churches, denoted as “Matildic churches”, belonging to the territorial area between Lombardia, Emilia Romagna and Toscana and built during the Matilde di Canossa domain, between the X and the XI centuries. The study was based on detailed field surveys, in situ tests, visual inspections and existing archives in order to obtain an accurate knowledge of the churches and a proper evaluation of the damage caused by the earthquake. Then, detailed finite element models of the churches were developed and non-linear dynamic analyses with different peak ground accelerations were performed. The numerical simulations provided a deep insight into the seismic behavior of the analyzed churches, identifying the damage patterns and the main collapse mechanisms for different seismic intensity levels. The obtained results appear to be in a good agreement with the damage experienced by the churches during the earthquake. This study can be considered as a first step to assess the seismic vulnerability of the “Matildic churches”, extremely important for their historical and architectural value.

[1]  Paolo Foraboschi,et al.  The central role played by structural design in enabling the construction of buildings that advanced and revolutionized architecture , 2016 .

[2]  Gabriele Milani,et al.  Failure analysis of seven masonry churches severely damaged during the 2012 Emilia-Romagna (Italy) earthquake: Non-linear dynamic analyses vs conventional static approaches , 2015 .

[3]  Michele Betti,et al.  Modelling and analysis of a Romanesque church under earthquake loading: Assessment of seismic resistance , 2008 .

[4]  Gabriele Milani,et al.  Comparative pushover and limit analyses on seven masonry churches damaged by the 2012 Emilia-Romagna (Italy) seismic events: Possibilities of non-linear finite elements compared with pre-assigned failure mechanisms , 2015 .

[5]  Paolo Foraboschi.  Church of San Giuliano di Puglia: Seismic repair and upgrading , 2013 .

[6]  Serena Cattari,et al.  Seismic Performance of Historical Masonry Structures Through Pushover and Nonlinear Dynamic Analyses , 2015 .

[7]  V. Der,et al.  Shear behaviour of bed joints , 1993 .

[8]  Gianni Bartoli,et al.  Fundamental aspects on the seismic vulnerability of ancient masonry towers and retrofitting techniques , 2015 .

[9]  Federico Lombardi,et al.  Significance of GPR polarisation for improving target detection and characterisation , 2014 .

[10]  Aw Page,et al.  THE BIAXIAL COMPRESSIVE STRENGTH OF BRICK MASONRY. , 1981 .

[11]  Francesca da Porto,et al.  Performance of masonry buildings during the Emilia 2012 earthquake , 2014, Bulletin of Earthquake Engineering.

[12]  Nicola Augenti,et al.  Earthquake damages to cultural heritage constructions and simplified assessment of artworks , 2013 .

[13]  Sergio Lagomarsino,et al.  Damage assessment of churches after L’Aquila earthquake (2009) , 2012, Bulletin of Earthquake Engineering.

[14]  Federico Lombardi,et al.  Combining orthogonal polarization for elongated target detection with GPR , 2014 .

[15]  Gabriele Milani,et al.  Non-linear dynamic and static analyses on eight historical masonry towers in the North-East of Italy , 2016 .

[16]  Paolo Foraboschi,et al.  Resisting system and failure modes of masonry domes , 2014 .

[17]  Luigi Fregonese,et al.  Assessing the seismic vulnerability of a historical building , 2013 .

[18]  Gabriele Milani,et al.  Seismic assessment of historical masonry towers in the north-east region of Italy , 2016 .

[19]  Marco Valente,et al.  Seismic assessment of two masonry Baroque churches damaged by the 2012 Emilia earthquake , 2017 .

[20]  Linda Giresini,et al.  Structural damage in the cities of Reggiolo and Carpi after the earthquake on May 2012 in Emilia Romagna , 2014, Bulletin of Earthquake Engineering.

[21]  Antonio Tralli,et al.  The seismic behaviour of ancient masonry buildings after the earthquake in Emilia (Italy) on May 20th and 29th, 2012 , 2012 .

[22]  Gabriele Milani,et al.  Seismic assessment of historical masonry towers by means of simplified approaches and standard FEM , 2016 .

[23]  Luigi Fregonese,et al.  An insight in the late Baroque architecture: An integrated approach for a unique Bibiena church , 2017 .

[24]  Jeeho Lee,et al.  Plastic-Damage Model for Cyclic Loading of Concrete Structures , 1998 .

[25]  E. Oñate,et al.  A plastic-damage model for concrete , 1989 .

[26]  Luigi Sorrentino,et al.  The performance of churches in the 2012 Emilia earthquakes , 2014, Bulletin of Earthquake Engineering.