GGU-STABILITY: General notes on nail wall analysis
A nail wall consists of tension members, geosynthetics or steel strips, allowing analysis of reinforced soil walls.
Nail wall analyses are not codified in (German) regulations. However, permits containing notes on analysis have been issued by the German Institute for Construction Technology for soil nailing systems offered by several companies.
Analysis of soil nailing generally requires six separate verifications:
Verification of inner stability via slip body investigations, generally with a failure mechanism consisting of two bodies. The verification can be carried out using the Fellenius Rule
), which is realised in the program. Verification of sliding safety;
Verification of overturning stability;
Resultant must intersect the base surface in the 1st core dimension (= b/6).Verification of bearing capacity safety;
Verification of general stability ;
Verification of the concrete shell.