Title: The new foundation system of the Basilica di Collemaggio's transept

Authors: Marco Zucca; Pietro Giuseppe Crespi; Nicola Longarini; Manuela Alessandra Scamardo

Addresses: Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, P.za Leonardo da Vinci 32, Milan, Italy ' Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, P.za Leonardo da Vinci 32, Milan, Italy ' Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, P.za Leonardo da Vinci 32, Milan, Italy ' Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, P.za Leonardo da Vinci 32, Milan, Italy

Abstract: In the seismic retrofitting of historical churches, the realisation of new foundations of collapsed elements represents an important aspect for the interaction with both the underground pre-existing structures and the new structural elements to be rebuilt. For the specific case study of the Basilica di Collemaggio, after an accurate geometrical survey and onsite geotechnical tests, a specific mixed structure foundation system is proposed in order to fulfil the seismicsafety requirements and the Cultural Heritage Office's conservation prescriptions. Nonlinear analyses are performed considering the interaction between the soil and the foundation system, together with the new couple of main pillars and the triumphal arch. The analyses are aimed to verify the capabilities of the new foundation system to bear the transversal seismic actions. The analyses are also completed by some experimental tests on micropiles, which represent the main underground-to-elevation connection elements.

Keywords: foundation system; historical building; masonry church; seismic retrofitting; finite element analysis.

DOI: 10.1504/IJMRI.2020.104846

International Journal of Masonry Research and Innovation, 2020 Vol.5 No.1, pp.67 - 84

Received: 16 Nov 2018
Accepted: 05 May 2019
Published online: 04 Feb 2020 *

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