Details
| Translated title of the contribution | Static and dynamic friction value determination on ground segment joints |
|---|---|
| Original language | German |
| Pages (from-to) | 112-119 |
| Number of pages | 8 |
| Journal | Bautechnik |
| Volume | 96 |
| Issue number | 2 |
| Early online date | 10 Sept 2018 |
| Publication status | Published - 10 Feb 2019 |
Abstract
Static and dynamic friction coefficient investigation of grinded segment joints. With the fast development of wind energy, the designs of Wind Turbine Towers have been continuously improved, moreover new structures have been innovated. As one of the innovations, segment tower structure was developed. Due to its prefabrication and segmental construction characteristic, it suits particularly well for tower structures. The resulting segment joints which have already been extensively studied in bridge construction are of great importance. As a major difference to bridge segment construction, the joints are designed as grinded dry joints instead of shear key connected joints. With external prestressing technology, the joints are under compression and thus the forces will be transmitted through friction. Previous studies of such “very smooth” joints have typically been carried out on specimen with smooth surface rather than grinded surface. Therefore, to what extent the current standards values will fit the design of the grinded segment joints is questionable. Furthermore, the wind turbine towers are highly dynamically stressed structures. It should also be clarified whether the static friction coefficient is also applicable for dynamic load situation or not. The results of static as well as dynamic tests are evaluated and discussed.
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
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In: Bautechnik, Vol. 96, No. 2, 10.02.2019, p. 112-119.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Statische und dynamische Reibwertermittlung an geschliffenen Segmentfugen
AU - Hartwig, Steffen
AU - Marx, Steffen
AU - Betz, Thorsten
N1 - Funding Information: Die Untersuchungen innerhalb des Verbundforschungsvorhabens "ventus efficiens" werden mit Landesmitteln des Niedersächsischen Vorabs gefördert. Die Autoren danken dem Fördermittelgeber sowie allen Projektbeteiligten für die konstruktive Zusammenarbeit. Ebenfalls gilt der Dank der Max Bügl Wind AG für die Herstellung der Probekörper.
PY - 2019/2/10
Y1 - 2019/2/10
N2 - Static and dynamic friction coefficient investigation of grinded segment joints. With the fast development of wind energy, the designs of Wind Turbine Towers have been continuously improved, moreover new structures have been innovated. As one of the innovations, segment tower structure was developed. Due to its prefabrication and segmental construction characteristic, it suits particularly well for tower structures. The resulting segment joints which have already been extensively studied in bridge construction are of great importance. As a major difference to bridge segment construction, the joints are designed as grinded dry joints instead of shear key connected joints. With external prestressing technology, the joints are under compression and thus the forces will be transmitted through friction. Previous studies of such “very smooth” joints have typically been carried out on specimen with smooth surface rather than grinded surface. Therefore, to what extent the current standards values will fit the design of the grinded segment joints is questionable. Furthermore, the wind turbine towers are highly dynamically stressed structures. It should also be clarified whether the static friction coefficient is also applicable for dynamic load situation or not. The results of static as well as dynamic tests are evaluated and discussed.
AB - Static and dynamic friction coefficient investigation of grinded segment joints. With the fast development of wind energy, the designs of Wind Turbine Towers have been continuously improved, moreover new structures have been innovated. As one of the innovations, segment tower structure was developed. Due to its prefabrication and segmental construction characteristic, it suits particularly well for tower structures. The resulting segment joints which have already been extensively studied in bridge construction are of great importance. As a major difference to bridge segment construction, the joints are designed as grinded dry joints instead of shear key connected joints. With external prestressing technology, the joints are under compression and thus the forces will be transmitted through friction. Previous studies of such “very smooth” joints have typically been carried out on specimen with smooth surface rather than grinded surface. Therefore, to what extent the current standards values will fit the design of the grinded segment joints is questionable. Furthermore, the wind turbine towers are highly dynamically stressed structures. It should also be clarified whether the static friction coefficient is also applicable for dynamic load situation or not. The results of static as well as dynamic tests are evaluated and discussed.
KW - Buildings
KW - Renewable Energy
KW - dry joint
KW - friction coefficient
KW - segmental construction
KW - wind turbine tower
UR - http://www.scopus.com/inward/record.url?scp=85056188659&partnerID=8YFLogxK
U2 - 10.1002/bate.201800023
DO - 10.1002/bate.201800023
M3 - Artikel
VL - 96
SP - 112
EP - 119
JO - Bautechnik
JF - Bautechnik
SN - 0932-8351
IS - 2
ER -