为探究风电行业内塔筒屈曲现象频发的原因,以风电塔筒屈曲计算最常用的欧洲EC3壳结构规范为研究对象,分析新、旧两本规范对于屈曲承载力计算方法的异同。针对两本规范计算方法中的制造质量、屈曲折减系数等关键参数开展了定量分析。经研究发现,新、旧EC3壳结构规范中经向屈曲承载力计算公式差异较大,制造质量对风电塔筒屈曲承载力影响较大,尤其是当采用新版规范进行塔筒设计时,应谨慎选择制造质量参数的取值。
Abstract
To explore the reasons for frequent tower cylinder buckling phenomena in the wind power industry, this article takes the European EC3 shell structure code, which is the most commonly used calculation method for tower buckling, as the research object. It analyzes the similarities and differences between the new and old versions of this code in terms of their methodologies for calculating buckling capacity. A quantitative analysis is conducted on key parameters such as manufacturing quality and buckling reduction factors used in the calculation methods outlined in both codes. The study reveals significant differences in the formulas for calculating the meridional buckling capacity between the new and old EC3 Shell Structures Codes. Furthermore, it highlights that manufacturing quality has a substantial impact on the buckling capacity of wind turbine towers. Notably, when designing towers using the new version of the code, careful consideration should be given to the selection of manufacturing quality parameters to ensure accurate and reliable buckling capacity calculations.
关键词
风力发电塔 /
欧洲规范 /
壳结构 /
屈曲承载力 /
几何缺陷
Key words
wind turbine tower /
Eurocode /
shell structure /
buckling bearing capacity /
geometrical imperfection
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基金
国家自然科学基金（51978528）; 华能集团科技项目“HNKJ23-H18海上风电场基础冲刷防护治理理论、措施及工程应用研究”
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