Example 15: Grid foundation on elastic springs

altDescription of the problem

To verify the mathematical model of ELPLA for analyzing grid foundations, the results of grid foundation on elastic springs obtained by Szilard (1986) (Example 4.4.5, page 350) are compared with those obtained by ELPLA.

The geometry and the loads of foundation are the same as those of Szilard (1986) as shown in Figure 21. The grid has rectangular cross section of 2.5 [m] width and 0.5 [m] depth, yields Moment of Inertia I = 0.026 [m4] and Torsion modulus J = 0.091 [m4]. The parameters of grid material are Young's modulus Eb = 3×10 [kN/m] and Shear modulus Gb = 1×10 [kN/m]. Modulus of subgrade reaction of the soil is ks = 40000 [kN/m].


 Example 15: Grid foundation on elastic springs

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