Bond behavior of high strength concrete under high cyclic pull-out loading

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragenBegutachtung

Abstract

Due to the progressive development in the field of concrete production, high-strength concretes are used more often and are nowadays indispensable especially for highly loaded engineering structures. In addition to the question of the static load-bearing capacity, a secure prediction of the behavior under high cyclic loading plays the major role in the design process. Exemplary are wind exposed structures like wind turbines, which have to withstand up to N = 109 load cycles during service life.
As part of a joint research project to investigate the material fatigue of wind turbines made of reinforced and prestressed concrete, the Technische Universität Dresden dealt with the bond behavior of high strength concrete and steel reinforcement in the high cycle fatigue range (N > 2·106).
The experimental program included 67 quasi-static and 56 cyclic pull-out and beam-end tests with two high-strength concretes classes, C80 and C120, and one normal strength concrete. The tests were carried out with reinforcing bars with a diameter ds = 16 mm and a bond length of 2·ds. The majority of the tests were performed with a loading frequency of 5 Hz and up to 20 million load cycles. Some specimens were also cyclically loaded with twice and four times the frequency.
The presented article deals with the experimental and instrumental setup and test results of bond fatigue tests. The influences of concrete strength and loading frequency are discussed particularly. In addition, the results are classified in context of existing studies and S-N curves.
Titel in Übersetzung
Verbundverhalten von hochfesten Beton unter hochzyklischer Zugbeanspruchung

Details

OriginalspracheEnglisch
TitelProceedings Bond in Concrete 2022
Seiten777-789
Seitenumfang13
PublikationsstatusVeröffentlicht - 27 Juli 2022
Peer-Review-StatusJa

Konferenz

TitelBond in concrete - bond, anchorage, detailing: 5th International Conference
Veranstaltungsnummer5
Dauer25 - 27 Juli 2022
Webseite
BekanntheitsgradInternationale Veranstaltung
OrtUniversity of Stuttgart
StadtStuttgart
LandDeutschland

Schlagworte

Forschungsprofillinien der TU Dresden

    DFG-Fachsystematik nach Fachkollegium

      Fächergruppen, Lehr- und Forschungsbereiche, Fachgebiete nach Destatis

        Ziele für nachhaltige Entwicklung