Abstract
The principles of limit conditions method in designing modern retaining structures of reinforced soil are presented. The principles are elaborated according to French Standard NF P 94-200 [1, 3]. Procedures of checking of particular kinds of stability are described. The most frequently adopted combinations of loads are given together with partial factors of safety of external, internal and general stability, method factors, friction factors of soil medium-reinforcement and values of partial safety factors of settlement.
Highlights
The principles of limit conditions method in designing modern retaining structures of reinforced soil are presented
Dimensioning of retaining structures of reinforced soil elaborated by authors of this technology consists in the checking of internal and external stability [2, 5, 6], applying safety factors of pretty high values (1,5–3,15)
Modern structures of reinforced soil should be designed with limit conditions method according to the new French Standard NFP 94-200 [1, 3]
Summary
Dimensioning of retaining structures of reinforced soil elaborated by authors of this technology consists in the checking of internal and external stability [2, 5, 6], applying safety factors of pretty high values (1,5–3,15). Modern structures of reinforced soil should be designed with limit conditions method according to the new French Standard NFP 94-200 [1, 3]. This Standard requires control of three types of stability of reinforced soil mass: – external (because of slide along the base and bearing capacity of the ground), – internal (because of value of the forces stretching reinforcement and anchoring bars in the soil), – general, because of the possibility of slides along potential soil destruction surfaces due to cutting down.
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