Ho-Pile research project

Project title: Ho-Pile – Investigations on the horizontal load-bearing behavior of XL monopiles under cyclic loading



In the case of a WTG monopile foundation, its steel mass depends heavily on the geotechnical design. This is essentially based on p-y approaches. Due to a lack of verified knowledge, there are no clear or only inadequate specifications in the regulations. Furthermore, no generally recognized and experimentally validated p-y approaches are yet available for geotechnical MP measurements. This results in project uncertainties and often unnecessary additional steel mass consumption. The Ho-Pile research project validates and extends an existing p-y approach. This requires complex numerical FE calculations and experimental investigations on a scale of 1:5. The project is based on a p-y approach for sand that has been developed in recent years. This approach is experimentally validated by tests in the TTH’s foundation engineering test pit.


  • Project type: Joint project
  • Term: 2018 – 2022
  • Financing: Funding by BMWK
  • Research partner: Fraunhofer IWES

Leibniz University Hannover
Test center load-bearing structures Hanover
Dr.-Ing. Mareike Collmann

Merkurstrasse 13
30419 Hanover

Tel: +49 (0)511 / 762-9275
Email: collmann@tth.uni-hannover.de

More information

Ho-Pile project at EnArgus (with information on project partners)