Il processo di Building Risk Assessment condotto sulla chiesa di MarmorKirken (Cityringen Metro)

Fantauzzi, G;SOCCODATO, FABIO MARIA

2017-01-01

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Abstract

For the expansion of the existing metro in Copenhagen (Cityringen project), the construction of one station has been envisaged in front of the church of Marmorkirken (out of the 18 new stations in total). This church is the most important of the whole of Denmark, and it’s an ancient heterogeneous structure composed of granite rocks, boulders, marble columns and masonry. The process of the Building Risk Assessment had to take into account the peculiarities of the structure. A cadastral research has been done in order to collect as much of Church’s data as possible, and a campaign of structural investigations has been performed in order to assess the mechanical properties of the building materials; these data have been used as input for the numerical model. For each phase of excavation of the station a continuous comparison has been performed between the numerical forecast and the monitoring data. The comparison allowed for the fine tuning of the numerical model and make it even more adherent to the physical model. The station is actually completed and the final displacements measured on the church have been perfectly aligned with the predictions of the numerical model. The note describes the whole process of analysis.