992x
004577
2020-07-31

Question

In RSTAB, I would like to enter a rigid modulus of subgrade reaction for the translational, shear, and torsional springs. Which values do I have to define?


Answer:
A completely rigid support is not possible. The maximum values of the translational, shear, and rotational springs are limited as follows:

Translational spring
C1,x 1.0 × 108 kN/m²
C1,y 1.0 × 109 kN/m²
C1,z 1.0 × 109 kN/m²

Shear spring
C2,x 1.0 × 108 kN
C2,y 1.0 × 108 kN
C2,z 1.0 × 108 kN

Rotational spring
Cφ 1.0 × 108 kNm/rad/m

Author

Mr. Baumgärtel provides technical support for Dlubal Software customers.