ABSTRACT
This paper describes the application of the Ground-work Impact and Building Vulnerability methodology (GIBV) for the rapid assessment of damage caused on built heritage by an excavation. The GIBV damage assessment methodology is based on the combination of excavation-induced greenfield displacements and the vulnerability of buildings to subsidence. The combination of impact and vulnerability results in the expected building damage class. The GIBV has been implemented in a GIS tool to predict damage classes for buildings exposed to excavation-induced settlements.
This paper presents a further development of the GIBV methodology to include time dependence of consolidation settlements. The methodology is applied to assess a cultural heritage building in Oslo. The vulnerability has been assessed considering the following parameters: building length and shape for the geometrical characteristics; type of structure and foundation for the structural characteristics; and visible damages for the current condition of the building.
The results show the importance of considering long-term subsidence effects and building vulnerability when conducting a preliminary analysis of urban excavation effects in soft soils on built heritage. A comparison between predicted settlements and measured ones indicates that the conducted assessment results in reliable predictions.
