THE DYNAMIC DEFORMATION OF ROAD SAFETY DEVICES. INFLUENCE OF THE DESIGN OF THE DEVICE AND METHODS OF MEASUREMENT

LA DEFORMATION DYNAMIQUE DES DISPOSITIFS DE SECURTE ROUTIERE. INFLUENCE DE LA CONCEPTION DU DISPOSITIF ET METHODES DE MESURE

Safety fences are placed at the edge of carriageways to ensure that run away vehicles do not reach dangerous areas. The concepts of shock and of plastic deformation are essential for the erection of effective safety devices. The impact of a vehicle against a barrier is governed by a variety of active parameters which have been concentrated in a simple system on an experimental large scale plan. At the same time the reaction parameters are numerous and their influence, positive or negative, on the impact and their consequences is not taken into account by conventional theories. The space available to allow the deformation of a barrier varies and the safety device should be adapted to it. One of these studies is particularly devoted to the research into the parameters influencing the dynamic deformation of a barrier and its equilibrium. The first problem is the exact measurement of this dynamic deflection, a transitory phenomenon both in space and time. Several methods have been used. Both calculations and more particularly static and dynamic experiments, influenced by the economic considerations, have led to different solutions leading to the erection of safety barriers with variable rigidity. /TRRL/

  • Supplemental Notes:
    • Proceedings du Collogue sur les Methodes d'Etudes et Simulation des Chocs, 16, 17 et 18 Octobre 1974, Lyon, France.
  • Corporate Authors:

    Librairie Lavoisier

    Rue Lavoisier 11
    75008 Paris,   France 
  • Authors:
    • Chretien, B
  • Publication Date: 1974

Language

  • French

Media Info

  • Features: Figures; Tables;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184070
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Feb 3 1979 12:00AM