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Modulus of Subsoil Reaction

The following options are available in the program to introduce the modulus of subsoil reaction:

  • in the form of distribution (input distribution of the modulus of subsoil reaction kh in front and behind the structure is input)
  • as a soil parameter with a respective value (either linear or nonlinear - curve)
  • according to Schmitt
  • according to Chadeisson
  • according to CUR 166
  • iterate by using deformation characteristics of soils
  • input results of pressiometric test (according to NF P 94-282, according to Menard)
  • input results of dilatometric test (DMT)
  • according to Chinese standards ("c", "k" or "m" method)

The modulus of horizontal reaction of a soil body generally corresponds to spring stiffness in the Winkler model describing the relation between load applied to a rigid slab and the resulting soil deformation in the form:

where:

p

-

load acting along slab-soil interface

k

-

stiffness of Winkler spring

y

-

translation of slab into subsoil

Definition of the modulus of subsoil reaction