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Anti-seismic engineering

Fort de France teaching hospital, a structure built on 350 insulators
Fort de France teaching hospital, a structure built on 350 insulators - © VINCI and subsidiaries
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VINCI Construction uses state-of-the-art techniques to adapt to seismic constraints in order to efficiently and effectively prevent the devastating effects that earthquakes can have on structures.

Geotechnologies are front and centre when it comes to earthquake engineering. “The interaction between foundation and structure is all-important, since the seismic acceleration caused by an earthquake is transmitted through the ground,” says VINCI Construction Grands Projets Structural Design Director Philippe Moine. 

Based on its substantial experience with specialised civil engineering works in all types of seismic zones, Soletanche Bachy is able to employ innovative ground improvement techniques such as Geomix walls in these zones. The process was used for the first time on the foundations of the prefecture building in Fort de France, Martinique. 

In addition to foundations, Freyssinet and Nuvia offer a range of special systems for actively protecting engineering structures and buildings. They are based on three techniques: isolation, connection and dissipation. Freyssinet and Nuvia are using these techniques to protect structures located in seismic zones by installing Transpec FVD hydraulic dampers, Transpec STU hydraulic connectors and isolators made by the Freyssinet Products Company (FPC) factory that separate the structure from its foundation (transforming structural movement – kinetic energy – into strain or heat – potential energy).