The second INACHUS field test was held on 31 May 2017 in Lyon, France. It focused on
merging data from wide area assessment tools and collapse simulations. In collaboration with
CARDEM, a French demolition company, INACHUS partners identified a three-storey factory
building in Saint-Fons that was scheduled to be demolished. A first scenario planned to weaken
key pillars and subsequently pull the building over by ropes. It then was decided to execute a
second scenario by gradually weakening certain pillars until collapse occurred, this procedure
was designed to mimic the impact of an earthquake.
ASI visited the building in spring to record the construction technique in order to build the
virtual building model. The model was then simulated by ASI with the second collapse scenario.
Ground-based and airborne laser scans by FOI, ONERA and ITC created a textured point cloud
model of the building before and after the collapse. The image below shows the matching of
laser scan and simulation result.
The Video below shows the simulation result performed by LUAS. The DEM model (provided by
courtesy of ASI) was simulated by applying the first collapse scenario where some pillars were
weakened and where the building was then pulled over by ropes. Unfortunately LUAS could
not participate in the field test and the simulation with the second collapse scenario remained