风力涡轮机塔架结构设计的考虑因素:实际应用

Douglas Mateus de Lima, Iálysson da Silva Medeiros, Romário Barros dos Santos, Luis Ernesto de Medeiros Alas, Pablo Aníbal López‐Yánez
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引用次数: 0

摘要

为了实现高效的结构性能,本文介绍了一种方法,用于设计高度为 80 米的 S355J2 管状钢塔的外壳结构和连接尺寸,该塔架与 SWT-2.3-93 型风力涡轮机相匹配。塔架由三部分组成,通过高强度钢制成的法兰连接件相互连接。分析考虑了各种载荷情况,考虑了不同方向的应力和阻力,并根据最大强度和疲劳标准,采用彼得森理论设计了连接件。结果表明,与抗应力相比,圆周应力几乎可以忽略不计,而由于扭矩的作用,底部的剪应力明显增大。经向应力决定了结构的稳定性,需要考虑内部压力以确保安全。最大应力值从 135.00 到 168.47 兆帕不等,取决于塔高沿线的位置。法兰连接符合强度和疲劳标准,第一个法兰承受了 63.0% 的疲劳效应,第二个法兰承受了 39.7% 的疲劳效应。因此,研究结果为塔架设计提供了可靠的信息和方法,有助于切实有效地开发这些结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Considerations for the structural design of wind turbine towers: A practical application
Aiming to achieve efficient structural performance, this article presents a methodology for the design of the shell structure and dimensioning of the connections of an S355J2 tubular steel tower with a height of 80 m, compatible with a SWT‐2.3‐93 wind turbine. The tower is made up of three segments, interconnected by flanged connections made of high‐strength steel. The analysis considers various load cases, taking into account stress and resistance in different directions, as well as designing connections using Petersen's theory, according to maximum strength and fatigue criteria. The results indicate that the circumferential stresses are nearly negligible compared with the resistant stresses, while the shear stress is significantly higher at the base due to the torsional moment. Meridional stress determines the stability of the structure, requiring consideration of internal pressure for safety. Maximum stress values range from 135.00 to 168.47 MPa, depending on the location along the tower height. Flanged connections meet the strength and fatigue criteria, with the first flange enduring 63.0% of the fatigue effect and the second, 39.7%. Therefore, the results provide reliable information and methodologies for tower design, contributing to the practical and efficient development of these structures.
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