To investigate the compression-bending capacity of these joints in concrete wind turbine towers, a 1：4 scale specimen was conducted under combined compression and bending. Additionally, A finite element （FE） model was firstly developed and validated against experimental result regarding to the compression-bending capacity. Results indicate that the FE simulations are close to the experimental value, with differences less than 5%, which verifies the accuracy of the FE model. A systematic analysis of the stress mechanisms affecting the horizontal joints in concrete wind turbine tower was undertaken. Based on the experimental results, theoretical analysis of the stress distribution, and FE parametric study, a calculation method for the compression-bending capacity of the horizontal joints in concrete wind turbine towers was proposed. The predicted values of compression-bending capacity of the horizontal joints from this method exhibits an error of less than 10% compared to both experimental and numerical results, further confirms that the proposed design method for the compression-bending capacity of the horizontal joints in concrete wind turbine concrete towers is accurate.
Key words
wind turbines /
towers /
finite element method /
horizontal joint /
compression-bending capacity
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References
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