Beam-column modeling and seismic fragility analysis of a prestressed segmental concrete tower for wind turbines

Cao, Yuqi; He, Minjuan; Ma, Ren; Yang, Rongchang; Feng, Liang

doi:10.1177/1369433219900295

Cited by 8 publications

(1 citation statement)

References 15 publications

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“…Although CFFT towers for wind turbine applications have not yet been investigated, similar FE models have been developed for conventional tower systems. For example, a prestressed concrete tower for wind turbines was studied using the finite element method software programs OpenSees, https://opensees.berkeley.edu/index.php (accessed on 23 January 2024) and ABAQUS, version 6.6, by Cao et al [20]. A beam-column model was first built in OpenSees to investigate the global structure response.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Model of Concrete-Filled, Fiber-Reinforced Polymer Tubes for Small-Scale Wind Turbine Towers

Gong,

Noël

2024

CivilEng

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The finite element method was used to study the feasibility of concrete-filled, fiber-reinforced polymer tubes (CFFTs) for small-scale wind turbine towers in remote areas. Although CFFTs have been successfully employed for a variety of structural applications, their use for wind turbine towers is novel and has yet to be investigated in detail. The objective of the study was to identify, for the first time, the most important parameters for design and compare the behavior of CFFT towers versus conventional steel and concrete towers. The model was first validated using experimental results reported in the literature followed by a series of parametric studies to evaluate the importance of several key parameters. In the first phase, the effect of different geometric properties (taper and concrete filling ratio) and reinforcement configurations (FRP laminate configuration, steel reinforcement ratio, and prestressing level) were investigated for cantilever tower models with concentrated lateral loads. A 10 m high CFFT wind turbine tower model was subsequently modeled and studied under different loading configurations. The influence of the height-to-diameter (h/D) ratio on cantilever CFFT models was also studied and a conservative preliminary design that can be refined for specific turbine systems and wind conditions was adopted using the h/D ratio. The CFFT tower model was compared to concrete and steel tubular models with similar geometry to study the advantages of CFFT towers and showed that CFFTs can be an efficient alternative.

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Section: Introductionmentioning

confidence: 99%

Finite Element Model of Concrete-Filled, Fiber-Reinforced Polymer Tubes for Small-Scale Wind Turbine Towers

Gong,

Noël

2024

CivilEng

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Mechanical behavior of prestressed UHPC wind turbine tower columns under combined axial compression and bending

Zhou,

Zhou

2024

Structural Concrete

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Developing offshore wind power can effectively reduce carbon emissions, and adopting large‐capacity wind turbines is an important way to achieve cost reduction and efficiency increase. With increasing power capacity, the hub height and rotor‐nacelle assemblies (RNA) load will increase significantly. Ultra‐high performance concrete (UHPC) possesses ultra‐high compressive performance, good tensile, fatigue, and corrosion resistance, and thus is an effective way to further improve the mechanical performance and economic efficiency of tall offshore wind turbine (OWT) towers. Evaluation of ultimate strength is an essential aspect of design for OWT towers, and the tower structure is mainly under the combined action of axial compression from the self‐weight and RNA loads and bending from the eccentricities of RNA and aerodynamic loads from the rotor on the tower top. In this work, the mechanical behavior of prestressed UHPC wind turbine tower columns under combined axial compression and bending was numerically investigated. The finite element (FE) analyses were carried out using ABAQUS, and the material and geometric nonlinearity were considered in the model, as well as the tensile strain hardening properties of UHPC. The FE models were firstly verified by the typical experimental results of UHPC hollow columns, reinforced UHPC beams, prestressed UHPC beams, and prestressed concrete‐steel hybrid wind turbine tower model. Then the parametric study was carried out, and the parameters included the control stress and number of prestressing tendons, rib number, diameter‐to‐thickness ratio of the UHPC column, steel ratio of longitudinal reinforcement, axial load ratio, and UHPC strength. The calculation methods for flexural capacity of prestressed UHPC wind turbine tower columns were finally proposed, and were found to agree well with the modeling results.

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

Klein

Marx

2021

Engineering Structures

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Beam-column modeling and seismic fragility analysis of a prestressed segmental concrete tower for wind turbines

Cited by 8 publications

References 15 publications

Finite Element Model of Concrete-Filled, Fiber-Reinforced Polymer Tubes for Small-Scale Wind Turbine Towers

Finite Element Model of Concrete-Filled, Fiber-Reinforced Polymer Tubes for Small-Scale Wind Turbine Towers

Mechanical behavior of prestressed UHPC wind turbine tower columns under combined axial compression and bending

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

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