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Tyrolean calculation with GHTyro

Traduction(s) de cet article : français
Intervenant(s) :Jean-Pierre Cassou
Type d'événement :Conférence
Niveau :Confirmé
Date :Jeudi 9 juillet 2009
Horaire :16h50
Durée :20 minutes
Langue :Français
Lieu :Salle E202 - Ireste

During the 4th European Congress of Speleology in Lans en Vercors, France, the "Speleo Secours Français" has broke the world record of the longest Tyrolean traverse with 1096 meters width and 245 meters height. This record has been reached with the assistance of three teams and the development of specific softwares.

As far as we know, there is no free software designed to calculate cable length (tyrolean traverse, ropeways, current transportation) in pre-project. All existing tools are : proprietary, not user-friendly, expensive and they keep their calculation methods secrets.

The TPR (Tyrolienne Pierre Rias)’s conceptors have made consequent bibliographical research. They developed calculation methods from the Physical Mechanics curse.

GHTyro software is written in Free Pascal under GPL’s license. It is a lightweight solution usable in pre-project (and for definitive studies in several structures) dedicated to quasi-statical analysis of the loader’s ropes of ropeways and tyroleans. GHTyro calculates geometry and stressings in the rope from defined parameters (eg : pre-stressing rope, linear weight, ...) and analyses structure at 2nd order.

GHTyro includes also a topographical module for geometry measures by theodolite.

This presentation will focus on installation with cables passively anchored at two extremities.

Jean-Pierre F. Cassou is a speleologist, advanced technician in civil engineering and disabled worker. He is the author of many softwares for speleology : GHTopo, topography software ; HaDIGIMAP : Tool for digitalization of charts and generator of surfaces (triangulation of Delaunay) ; GHCaveDraw, design software for speleology ; HadesGL : Visual display 3D. He is responsible for the database of the department of the Hautes-Pyrénées (development under PHP and MySQL).

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Slides (PDF - 2.9 Mo)