Soletanche Freyssinet

Institut Francais Des Sciences Et Technologies Des Transports, De L'amenagement Et Des Reseaux

Gilles Hovhanessian

Jerome Stubler

Nicolas Freitag

Erik Mellier

Jérôme Stubler

Bernard Basile

Maxime Trocme

Frédéric Taillade

Yohan Rabot

Alexandre Chaperon

Frédéric Bourquin

Geolocation method and system for implementing same

A method for monitoring a civil engineering construction including a first metal reinforcement and a reference conductor element. The first metal reinforcement and the reference conductor being separated by dielectric material and each having a first end that is electrically accessible. The method including injecting an incident electrical signal which is applied differentially between the first ends of the first reinforcement and of the reference conductor element collecting reflected signals returning along the conductors in return, and analyzing the reflected signals by comparing them against reference signals in order to determine any potential structural defect in the first reinforcement.

Method and system for monitoring a civil engineering construction

The invention relates to a method for determining the fatigue capital of a cable supporting a civil engineering structure, the method including: a measuring step (S, S) during which the normal tensile stress in the cable and the bending stress in the cable are measured in a synchronized manner so as to obtain the compound stress in the cable; a counting step (S) during which a count of the number of stress cycles, depending on the amplitude of the stress, is carried out from the measured compound stresses; and a step (S) of assessing the fatigue capital of the cable during which the fatigue capital of the cable is determined by comparing the count, carried out in the counting step, with a pre-set Wohler curve for the cable.

Method for determining the fatigue capital of a cable

The invention relates to a method for monitoring the state of a foundation supporting a building (I) and embedded in the ground, consisting of using a plurality of sensors () arranged on the building to acquire a set of measurements (m, m) relating to the foundation and/or to the building according to a predetermined acquisition mode; calculating, from said set of measurements, a set of condition indicators (i,i) characteristic of an embedding rigidity of the foundation; and making a comparison between a set of values derived from the set of calculated condition indicators and a set of thresholds.

Method and device for monitoring the state of a foundation embedded in the ground

The invention proposes a system for obtaining information relating to a pipe () conveying a flow of fluid (), and/or relating to the fluid. This system comprises a module () comprising means () of acquiring data, subsequent analysis of which makes it possible to obtain information relating to the pipe and/or the fluid, and means () of storing the data which said data acquisition means acquire, the self-contained module being arranged to be pushed by the fluid flow after being introduced into the pipe. It also comprises a mechanical link () which is connected to the self-contained module and accessible from outside the pipe.

System for obtaining information relating to a pipe, and associated method

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Antony, France

Gilles Hovhanessian