Ground improving injections underneath historical buildings: Five case histories as an overview of a technique

摘要

The geotechnical design approach for interventions underneath historic sites and monumentsrnis strongly influenced by the invasiveness of the selected technique. Ground improving interventionsrnwith expansion resin injections allow for the compacting of the ground and filling of the voidsrnunderneath a foundation in a non-invasive way. In this paper several possibilities offered by this techniquernwill be presented, describing five case histories performed all over Europe. In particular for each of thesernthe most peculiar aspects will be highlighted in order to describe each phase of the intervention design.rnIn terms of the design, different approaches can be used, ranging from a simple statistical approach andrngoing as far as a 3D finite elements modelling. Due to the historical relevance of the buildings, in theserncases the continuous monitoring of the job sites also plays a leading role together with comparative onsiterntests to measure the effectiveness of the injections.