Experimental and analytical study on the load-bearing capacity of segmented tower structures with dry joints under combined loading

Research output: Contribution to journalResearch articleContributedpeer-review



In recent years, hybrid towers have become increasingly established, especially for tall wind turbines. The concrete part of these towers, commonly constructed using segmental construction methods, consists of several circular ring segments stacked on top of each other. To reduce the amount of fabrication and erection effort, the joints between the segments are typically designed as dry ground joints. This paper deals with experimental investigations to determine the torsional load-bearing capacity of such dry ground concrete joints subjected to combined loading of prestressing, bending, and torsion. Based on the experience of previous investigations, a test set-up consisting of three reinforced concrete segments with circular ring cross-sections was developed. The herein newly developed evaluation concept enabled precise identification of the failure point for each test run utilizing the measured tangential displacements of the joint. The test results clarify the weaknesses of the current design model regarding the insufficient interaction with the bending moment and show very good accordance with the new calculation model, the so-called fiber model.


Original languageEnglish
JournalStructural Concrete
Publication statusE-pub ahead of print - 18 Jun 2024

External IDs

Mendeley 31ec19b9-7b08-348a-91ab-f8c6fab102eb
ORCID /0000-0003-2694-1776/work/162345798
ORCID /0000-0001-8735-1345/work/162347954
ORCID /0000-0002-1674-7438/work/162348102
ORCID /0000-0003-2174-9734/work/162348588
Scopus 85196261014



  • concrete segment construction, dry joints, experimental investigations, joint load capacity, wind energy