Class A predictions of damage level in an historical fortress induced by twin tunnelling

Tunnelling below historical city centres requires the accurate analysis of the impact of construction works on cultural heritage monuments, which need to be preserved from any possible damage. In this paper, the undercrossing of an historical masonry structure in the city of Florence (Italy), the Fo...

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Bibliographic Details
Published in:Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World pp. 1788 - 1795
Main Authors: Boldini, D., Spaggiari, C., Abul, J.K., Fuoco, S., Lusini, E.
Format: Book Chapter
Language:English
Published: United Kingdom CRC Press 2023
Taylor & Francis Group
Edition:1
Subjects:
Small Strain Stiffness
Interface Tensile
Tunnel Excavation
Horizontal Bed Joints
Geological Strength Index
Concrete Ring Segments
Overburden
Greenfield Conditions
Tensile Strain Distribution
Arno River
Damage Category
Finite Element Numerical Model
Cone Penetration Tests
Above Ground
BIM Model
Twin Tunnels
Hardening Soil Model
Horizontal Displacement Curve
Compensation Grouting
Shield Tail
Tensile Strain
Settlement Curve
SEM
Robotic Total Station
SCL
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Summary:Tunnelling below historical city centres requires the accurate analysis of the impact of construction works on cultural heritage monuments, which need to be preserved from any possible damage. In this paper, the undercrossing of an historical masonry structure in the city of Florence (Italy), the Fortezza da Basso, by two tunnels of the new high-speed railway underground line is analysed. The interaction problem is studied by a 3D class-A finite element numerical model. Advanced constitutive laws are adopted to describe the key features of the mechanical behaviour of both soil layers and masonry structures. The results of the analyses show that the excavation process is likely to induce a negligible to slight damage in the historical fortress when a typical surface volume loss of 0.5% is considered in greenfield conditions.
DOI:10.1201/9781003348030-215