为探究风电机组混凝土塔筒横缝的压弯承载性能,开展1：4缩尺比例混凝土塔筒压弯试验。在此基础上,建立有限元数值模型,模拟得到的横缝压弯承载力与试验结果的误差在5%以内,验证了有限元模型的准确性。系统开展风电机组混凝土塔筒横缝节点的受力机理研究,并基于试验结果、截面受力理论分析和有限元参数化分析结果,提出压弯工况下混凝土塔筒横缝接头的压弯承载力计算方法。该方法预测值与试验和有限元模拟结果误差在10%以内,进一步证明该文所提混凝土塔筒横缝压弯承载力计算方法的准确性。
Abstract
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.
关键词
风电机组 /
塔架 /
有限元法 /
横缝 /
压弯承载力
Key words
wind turbines /
towers /
finite element method /
horizontal joint /
compression-bending capacity
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参考文献
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基金
国家自然科学基金（52308147）; 重庆市自然科学基金（CSTB2024NSCQ-MSX035）; 重庆市教委科学技术研究项目（KJQN202300705）
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