3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
fr: plaque d’appui
plate connected to the head of the soil nail to transfer a component of load from the facing or directly from the ground surface to the soil nail
fr: durée de service
service life in years required by the design
fr: système de drainage
series of drains, drainage layers or other means to control surface and ground water
covering to the exposed face of the reinforced ground that may provide a stabilising function to retain the ground between soil nails, provide erosion protection and have an aesthetic function
fr: drainage de parement
de: Dränage der Frontausbildung
system of drains used to control water behind the facing
fr: système de parement
assemblage of facing units used to produce a finished facing of reinforced ground
fr: élément de parement
discrete element used to construct the facing
fr: parement flexible
de: bedingt nachgiebige Frontausbildung
flexible covering which assists in containing soil between the nails
soil, rock and fill existing in place prior to the execution of the construction works
fr: parement rigide
de: starre Frontausbildung
stiff covering, for example sprayed concrete, precast concrete section or cast in-situ concrete
fr: clou de l’ouvrage
soil nail which forms part of the completed soil nail structure
fr: élément de renforcement
generic term for reinforcing inclusions inserted into ground
fr: massif renforcé, sol cloué
de: bewehrter Boden
ground that is reinforced by the insertion of reinforcing elements
fr: clou sacrificial
soil nail installed in the same way as the production nails, solely to establish the pullout capacity but not forming part of the soil nail structure
fr: parement souple
de: vollkommen nachgiebige Frontausbildung
soft facing has only a short-term function to provide topsoil stability while vegetation becomes established
reinforcing element installed into the ground, usually at a sub-horizontal angle, that mobilises resistance with the soil along its entire length
soil nail construction
fr: ouvrage en sol cloué
work that incorporates soil nails, and can have a facing and/or a drainage system
soil nail system
fr: système de clouage de sol
reinforcing element which may include joints and couplings, centralisers, spacers, grouts and corrosion protection
fr: clou d’essai
nail installed by the same method as the production nails for the purpose of verifying the pullout capacity and durability, and could be forming a part of the structure
fr: chargement d’essai
load applied in the testing
3.2.1 Agt elongation of a metallic reinforcement.
3.2.2 fy yield strength of steel.
3.2.3 Ldb debonded nail length.
3.2.4 pp proof load (maximum load to which the nail is subjected during the test).
3.2.5 P0 datum load.
3.2.6 Rt load at which pullout failure occurs.
3.2.7 Rt,k characteristic value of the structural tensile resistance of the test soil nail or any of the extension pieces.
3.2.8 Rt0.1,k characteristic value of the 0,1 % yield resistance of the test soil nail or any of the extension pieces.
3.2.9 s1, s2 measured nail displacement at time t1 and t2 respectively.
3.2.10 sr residual nail displacement.
3.2.11 s0 initial nail displacement.
3.2.12 t1, t2 measurements taken at time t1 and t2.