Experimental Investigation of the Steel-Concrete Joint in a Hybrid Tower for a Wind Turbine under Fatigue Loading

Moon Ok Kim, Tae Min Kim, Dae Yong Lee, Moon Kyum Kim

Research output: Contribution to journalArticle

Abstract

This study investigated the fatigue behaviors at the joint of a hybrid steel–concrete wind turbine tower. A fatigue design approach was proposed for the joint based on CEB-FIP model code 1990 and Eurocode 2. In addition, to estimate the long-term fatigue performance related to continuous wind changes at the joint, two types of specimens were fabricated and tested. Each specimen consisted of steel and concrete sections, which were connected with anchor bolts, and they were designed to investigate the effect of the embedded length of the anchor bolt. Two million cycles of cyclic loading were applied to the specimens, after which a monotonic static loading was applied to investigate the residual performance of each specimen. The experimental results demonstrate that the joint of a hybrid steel–concrete wind turbine tower designed using the proposed approach retained sufficient fatigue performance. Thus, this approach can be effective for fatigue design of the joint.

Original languageEnglish
Pages (from-to)2971-2982
Number of pages12
JournalKSCE Journal of Civil Engineering
Volume23
Issue number7
DOIs
Publication statusPublished - 2019 Jul 1

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Wind turbines
Towers
Fatigue of materials
Concretes
Anchor bolts
Steel

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

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abstract = "This study investigated the fatigue behaviors at the joint of a hybrid steel–concrete wind turbine tower. A fatigue design approach was proposed for the joint based on CEB-FIP model code 1990 and Eurocode 2. In addition, to estimate the long-term fatigue performance related to continuous wind changes at the joint, two types of specimens were fabricated and tested. Each specimen consisted of steel and concrete sections, which were connected with anchor bolts, and they were designed to investigate the effect of the embedded length of the anchor bolt. Two million cycles of cyclic loading were applied to the specimens, after which a monotonic static loading was applied to investigate the residual performance of each specimen. The experimental results demonstrate that the joint of a hybrid steel–concrete wind turbine tower designed using the proposed approach retained sufficient fatigue performance. Thus, this approach can be effective for fatigue design of the joint.",
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Experimental Investigation of the Steel-Concrete Joint in a Hybrid Tower for a Wind Turbine under Fatigue Loading. / Kim, Moon Ok; Kim, Tae Min; Lee, Dae Yong; Kim, Moon Kyum.

In: KSCE Journal of Civil Engineering, Vol. 23, No. 7, 01.07.2019, p. 2971-2982.

Research output: Contribution to journalArticle

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