STUDY OF REINFORCED EARTH ARCHES

ETUDE DES VOUTES EN TERRE ARMEE

The aim of this study was to develop a design method for reinforced earth arches by comparing entirely new theoretical results and those of an experimental study. The experimental study was conducted on a two-dimensional model. The study of the infleunce of different parameters on the behaviour of the arch led to the following results: (1) there exists a limit length for the reinforcement, beyond which the radial deformation of the arch remains the same. Everything being equal, it is called the critical length. This critical length is a function of the radius and the angle of the arch segments. (2) the length of the reinforcement must not be inferior to a certain limit called limit adhesion length, within which there is collapse without breaking of the reinforcement as soon as the templet is removed. (3) the ultimate pressure is a linear function of the tensile strength of the reinforcement. The experimental study led to the following findings: (1) the earth contained inside one arch segment is approximately in a state of passive earth pressure and the stresses tangential to the sidewall of the arch contribute to the general equilibrium and stability of the structure. (2) it is the arch segment of the crown which is subjected to the least stresses. A collapse of the arch caused by the failure of the crown reinforcement was never observed. The stresses in this segment are the least important. (3) the arch segments on each side of the crown segments are the ones most subjected to stresses and therefore the first to be affected by the failure of the reinforcement. The study of deformation, showed the important self-stability phenomenon. A reinforced earth arch is a self-stable structure, e.g., it has the possibility of regaining its equilibrium when A defect in adhesion occurs by diminishing its radius. Experimental formulae are given for calculating the critical length and the ultimate pressure. /TRRL/

  • Corporate Authors:

    Laboratoire Central des Ponts et Chausees (LCPC)

    Boulevard Lefebvre 58
    Paris Cedex 15,   France  F-75732
  • Authors:
    • Behnia, C
  • Publication Date: 1973-3

Language

  • French

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 178 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00125321
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Report/Paper Numbers: No. 26 R&D Rept.
  • Files: ITRD, TRIS
  • Created Date: Dec 3 1975 12:00AM