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Rockfall hazards and design of geotechnical structures

RRO unit is part of geotechnical engineering: geology, seismology, earthworks, soil mechanics, rock mechanics, soil hydraulics, identification and mechanical reactions for soils and rocks, computational geotechnics.

Since July 2011, RRO laboratory aims to develop in the coming years.

Its strategical goals are :

(1) getting closer to the actors of civil engineering in Rhone Alpes,

(2) reinforcing interventions in soil and rock mechanics, especially in order to limit the risks,

(3) developing a new partnership with CEREMA, a new public institution, with the headquarters in Lyon, which includes former ex CETE center.

RRO deals with identified applied research problems during expertises on real projects and works. RRO is involved in publishing various documents about civil engineering: technical guides, standards, materials, softwares.

First, this Laboratory had to develop research regarding the behavior and size of works under a low speed impact (lower than 100 km/h) and the resilience of protection works against rockfalls (merlons, casquettes and filet screens). The IFSTTAR rockfall test station, located near Chambery (73), has an impact energy up to 13,500 kJ (20 tons at 130 km/h) and two catapults for impact tests up to 1,100 kJ in an horizontal direction.

In parallel, RRO develops its skillnesses in observing and analyzing in situ sites and works, in order to solve situations from principals, engineering departments or work companies. The FUI REMOTE, which aims in developing a new radar technology in order to observe widely sides and to analyze more precisely moves (for moves lower than 0.1 mm), is a good example of this field of intervention. This capacity and these observation and analyze skills of the former “Réseau des Laboratoires des Ponts et Chaussées’’ have always contributed to establish its reputation in geotechnical engineering.

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