Li Jinwei, Chen Junling, Lin Changfeng, et al. TORSIONAL LOAD BEARING CAPACITY OF CIRCUMFERENTIAL DRY JOINTS IN PREFABRICATED CONCRETE WIND TURBINE TOWER[J]. 2025, 46(3): 538-545.
The concrete section of one prefabricated steel-concrete wind turbine tower is usually fabricated segmentally in the factory and assembled on site by means of circumferential dry connection between segments. In this paper
according to the structural characteristics of circumferential joints between segments
the torsional load capacity of the circumferential joints between concrete segments under the interaction of vertical force and bending moment is derived as one integral expression and calculated by Python programming. The accuracy of the theoretical integral equation and the Python program is verified by comparing the results of two sets of ABAQUS refined finite element simulation with the published test results of the torsional load capacity for the circumferential joints between aluminum tubes. Finally
the torsional load capacities of 15 concrete segment cases with typical sizes and vertical forces are carried out by the proposed method. A 6-parameter model predicting the torsional load bearing capacity of the circumferential joints is proposed
and the values of these parameters are determined by least squares method. The design formula is proposed for the torsional load bearing capacity of the circumferential joints between concrete segments in prefabricated steel-concrete wind turbine towers.
关键词
Keywords
references
SEIDL G, HIERL M, BREU M, et al.Segmentbrücke greißelbach als stahlverbundbrücke ohne abdichtung und asphalt[J]. Stahlbau, 2016, 85(2): 126-136.
RETTINGER M, HÜCKLER A, SCHLAICH M. Technologien und entwicklungen im segmentbrückenbau[J]. Beton-und stahlbetonbau, 2021, 116(S2): 12-23.
VON DER HAAR C, MARX S. Design aspects of concrete towers for wind turbines[J]. Journal of the South African institution of civil engineering, 2015, 57(4): 30-37.
GRÜNBERG J, GÖHLMANN J. Concrete structures for wind turbines[M]. Berlin: Wiley, 2013.
KANG C J, HARTWIG S, MARX S.Behavior of externally prestressed segmental towers’ dry joint under torsion effects[J]. Structural concrete, 2019, 20(4): 1350-1357.
HARTWIG S, MARX S.Zum Torsionstragverhalten extern vorgespannter Kreissegmente mit trockenen Fugen[J]. Beton- und stahlbetonbau, 2017, 112(11): 740-746.
MOHAMAD M E, IBRAHIM I S, ABDULLAH R, et al.Friction and cohesion coefficients of composite concrete-to-concrete bond[J]. Cement and concrete composites, 2015, 56: 1-14.
HARTWIG S, MARX S.Modellentwicklung torsionsbeanspruchter kreisringsegmente mit trockenen fugen[J]. Beton- und stahlbetonbau, 2021, 116(5): 370-377.
HARTWIG S, MIDDENDORF J.Erweitertes torsionstragmodell extern vorgespannter kreisringsegmente mit trockenen fugen: interaktionsmodell zur bestimmung der torsionstragfähigkeit unter querkraft und biegung[J]. Beton-und stahlbetonbau, 2021, 116(8): 632-640.
LOH L, GARG A.Torsionstragverhalten von betonhohlquerschnitten in geschlossenen und klaffenden segmentfugen[J]. Beton-und stahlbetonbau, 2020, 115(11): 838-847.
LOH L, GARG A.Torsionstragverhalten von betonhohlquerschnitten in geschlossenen und klaffenden segmentfugen-teil 2: die umlagerung der torsionsschubspannungen[J]. Beton-und stahlbetonbau. 2021, 116(11): 871-880.
KLEIN F, FÜRLL F, BETZ T, et al. Experimental study on the joint bearing behavior of segmented tower structures subjected to normal and bending shear loads[J]. Structural concrete, 2022, 23(3): 1370-1384.
The International Federation for Structural Concrete. Fib model code for concrete structures 2010[S]. Berlin: Wiley, 2013.