Torsional load-bearing capacity of half-shell segments for prestressed concrete towers

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Fabian Klein
  • Steffen Marx

Research Organisations

External Research Organisations

  • Technische Universität Dresden
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Details

Original languageEnglish
Article number112589
JournalEngineering Structures
Volume243
Early online date22 Jul 2021
Publication statusPublished - 15 Sept 2021

Abstract

This article deals with the torsional load-bearing behaviour of concrete half-shell structures. The analogy between the bending stressed tension members according to second order theory and torsional members with warping hindered cross-section leads to a significantly simplified calculation of the additionally occurring warping stresses. This eliminates the need for the laborious solution of complex differential equations of the classical torsional warping theory to determine the load-bearing behaviour of warped cross-sections. The load redistribution approach projects the global torsion load of the segment tower onto the individual half-shell. The combination of the two approaches enables the analytical calculation of the torsional load-bearing behaviour of the concrete half-shell construction as a function of the global torsional moment and the system variables of the half-shell. The objective is to investigate and describe the torsional load-bearing behaviour of segmented half-shell structures in an engineering model. Compared to closed circular ring segments, the vertical joints have a significant influence, especially on the torsional rigidity. In order to determine the horizontal joint bearing capacity of these innovative constructions, it is essential to understand the load transfer of the torsional load. The presented approach allows to separate the individual effects of the load transfer in half-shell constructions from each other and thus to identify the factors influencing the torsional load-bearing behaviour.

Keywords

    Analogy of tension member, Engineering model, Prestressed concrete, Segment tower, Warping torsion, Wind energy

ASJC Scopus subject areas

Cite this

Torsional load-bearing capacity of half-shell segments for prestressed concrete towers. / Klein, Fabian; Marx, Steffen.
In: Engineering Structures, Vol. 243, 112589, 15.09.2021.

Research output: Contribution to journalArticleResearchpeer review

Klein F, Marx S. Torsional load-bearing capacity of half-shell segments for prestressed concrete towers. Engineering Structures. 2021 Sept 15;243:112589. Epub 2021 Jul 22. doi: 10.1016/j.engstruct.2021.112589
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