Research on the stress performance of lattice-type steel-tube-concrete ball-slab node four-limbed column wind turbine towers

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2024-07-17 DOI:10.1016/j.asej.2024.102960

Miao Li, Wenhui Zhang, Hongbao Wang, Yang Wen

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引用次数: 0

Abstract

Two laboratory-scale steel tube and concrete four-leg lattice prototypes were designed for use as wind turbine towers using optimized gimbaled wrapped ball-sheet- type nodes. Repeated load tests were performed on the prototype tower for several weeks to evaluate its damage modes, strength, stiffness, etc., and the numerical simulation was conducted. The results showed that the damage mainly included strength damage to the pylon, flexural damage to the top cross web and cracks at the bottom of the loading plate welded to the steel pipe. In addition, the web-tower stiffness ratio and ultimate bearing capacity of the tower improved to varying degrees. It is recommended that the web-tower stiffness ratio be between 0.05 and 0.07. When the connection between the ball column and the node plate changes from a high-strength bolt connection to a welded connection, the ultimate load-carrying capacity of the tower model increases by an average of approximately 8%.

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格构式钢管混凝土球板节点四肢柱风力发电机塔架应力性能研究

采用优化的万向缠绕球片式节点，设计了两个实验室规模的钢管和混凝土四脚格构原型，用作风力涡轮机塔架。对原型塔架进行了为期数周的重复载荷试验，以评估其损坏模式、强度、刚度等，并进行了数值模拟。结果表明，损坏主要包括塔架的强度损坏、顶部横腹板的弯曲损坏以及焊接在钢管上的加载板底部的裂缝。此外，腹杆-塔架刚度比和塔架极限承载力均有不同程度的改善。建议腹杆-塔身刚度比在 0.05 至 0.07 之间。当球柱与节点板之间的连接从高强度螺栓连接改为焊接连接时，塔架模型的极限承载能力平均提高了约 8%。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.