Modulus of Subsoil Reaction According to CUR 166
The following table stores the values of the modulus of subsoil reaction derived from experimental measurements carried out in the Netherlands (described in CUR 166). The table offers secant modules, which are in the program directly transformed into secant modules of subsoil reaction - see nonlinear modulus of subsoil reaction.
kh,1 [kN/m3] p0 < ph< 0,5 ppas | kh,2 [kN/m3] 0,5 ppas ≤ ph ≤0,8 ppas | kh,3 [kN/m3] 0,8 ppas ≤ ph ≤ 1,0ppas | |
Sand | |||
loose medium dense dense | 12000 - 27000 20000 - 45000 40000 - 90000 | 6000 - 13500 10000 - 22500 20000 - 45000 | 3000 - 6750 5000 - 11250 10000 - 22500 |
Clay | |||
soft stiff very stiff | 2000 - 4500 4000 - 9000 6000 - 13500 | 800 - 1800 2000 - 4500 4000 - 9000 | 500 - 1125 800 - 1800 2000 - 4500 |
Peat | |||
soft stiff | 1000 - 2250 2000 - 4500 | 500 - 1125 800 - 1800 | 250 - 560 500 - 1125 |
where: | p0 | - | value of pressure at rest [kN/m2] |
ppas | - | passive pressure [kN/m2] | |
ph | - | horizontal pressure corresponding to a given displacement of a structure [kN/m2] |
Diagram of determination of the modulus of subsoil reaction
Literature:
CUR 166 Damwandconstructies, available at Civieltechnisch Centrum Uitvoering Research en Regelgeving: P.O.Box 420, 2800 AK Gouda (NL).