Die Berechnung von Baugruben mit dem Bettungsmodulverfahren nach EB 102

The design of construction pits using the subgrade reaction method according to the recommendations of EB 102 - advice of applications, case studies, comparison with measurements and results of FE - calculations.

The 4. edition of the EAB (recommendation of the working group for excavation) of 2006 offered three methods to determine the subgrade modulus for the calculation of retaining walls. In order to verify the recommended methods given in EB 102 numerous comparative calculations were undertaken by the Technical Head Office of Ed. Züblin AG. The results of the calculations based on the three methods were presented to the working group for excavation of the German Society for Geotechnical Engineering. They varied considerably and did not match with those of FE-calculation and with measurements on numerous excavation constructions. As a consequence the working group for excavation has revised the recommendations completely and published it recently. The following article explains the application of the subgrade reaction method according to the "new" EB 102 for practical use. The results obtained by the subgrade reaction method correspond very well with FE-simulation and measurements on executed construction pits. As a conclusion the revised recommendation EB 102 can now be used for the design of retaining walls.