GGU-AXPILE: Bored piles to DIN 4014 and DIN 1054

The calculation of bored piles is comprehensively described in DIN 4014 and DIN 1054. Using the information given there a synthetic resistance-settlement curve can be calculated from which, beside the failure settlement, the settlement behaviour of the bored pile may be derived. The base resistance for a settlement s of

• s = 0.02 · D (pile diameter)

• s = 0.03 · D (pile diameter)

• s = 0.10 · D (pile diameter) = failure settlement

must be given. The corresponding base resistances are designated sig02, sig03 and sig10 or qb,k02 etc. in the program. The base resistances given in the DIN can be adopted directly from within the program. However, it is also possible to enter values deviating from the DIN.

In addition to the base resistances the skin friction must also be given for each soil. This is known as tau or qs,k by the program. Here, too, the values given in the DIN can be adopted directly from within the program. You can also enter user-defined values deviating from the DIN here.

The DIN 4014 demands that the bored pile is embedded at least 2.5 m into load-bearing soil. This condition is not checked by the GGU-AXPILE program when using this type of pile. From the pile length and the ground stratification, the program only determines in which soil layer the pile is located. The values of sig02, sig03 and sig10 given for this soil are utilised to determine the base resistance. The skin friction forces are determined for the layers above this.