带约束构造剪力键插筒式风电机组基础受力性能研究  

RESEARCH ON MECHANICAL BEHAVIOR OF CYLINDRICAL WIND TURBINE FOUNDATION WITH CONSTRAINED STRUCTURAL SHEAR KEY

作　　者：戚菁菁[1] 叶一宁 蒋丽忠[2] 吕伟荣[1] 卢倍嵘[1] 吴记东 Qi Jingjing;Ye Yining;Jiang Lizhong;Lyu Weirong;Lu Beirong;Wu Jidong(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Civil Engineering,Central South University,Changsha 410075,China)

机构地区：[1]湖南科技大学土木工程学院,湘潭411201 [2]中南大学土木工程学院,长沙410075

出　　处：《太阳能学报》2025年第4期423-433,共11页Acta Energiae Solaris Sinica

基　　金：湖南省自然科学基金(2021JJ30261,2019JJ50185,2018JJ2129);湖南省教育厅重点项目(20A184);湖南省自然科学基金(2023JJ30253)。

摘　　要：针对插筒式风电机组基础在长期风荷载作用下出现不同程度损伤的问题,提出一种带约束构造剪力键插筒式风电机组基础环,基础砼利用带约束构造剪力键优异的抗剪刚度和抗劈裂性能,解决基础的嵌固刚度强韧性不足、风电机组塔筒基础耐久性不足的问题。该研究通过对传统栓钉基础环、穿孔钢筋剪力键基础环以及3组不同埋深的带约束构造剪力键基础环进行缩尺模型试验以及有限元模拟,揭示带约束构造剪力键插筒式风电机组基础的传力机制和损伤破坏机理,分析带约束构造剪力键在风电机组基础中的抗剪性能。结果表明,带约束构造剪力键具有更强的钢筒-砼基础界面刚度优势以及显著传力扩散优势,能更有效地连接钢制基础环与混凝土基础共同工作,充分发挥混凝土与钢筋的材料优点,有效提高砼基础的嵌固刚度及耐久性。Aiming at the problem that the foundation of the cylindrical wind turbine may be damaged to different degrees under longterm wind load,a kind of cylindrical wind turbine foundation ring with constrained structural shear key is proposed.The foundation concrete can make use of the excellent shear stiffness and anti-cracking performance of the constrained structural shear key,in order to solve the problems of insufficient embedded stiffness strength and toughness of the foundation and insufficient durability of the tower cylinder foundation of the wind turbine.In this paper,through scaling model tests and finite element simulation on traditional stud foundation rings,perforated steel shear key foundation rings and three groups of constrained structural shear key foundation rings with different buried depths,the force transmission mechanism and damage mechanism of constrained structural shear key wind turbine foundation are revealed,and the shear resistance of constrained structural shear key in wind turbine foundation is analyzed.The results show that the constrained structural shear key has stronger interfacial stiffness advantage and significant force transfer and diffusion advantage,and can more effectively connect steel foundation ring and concrete foundation to work together,give full play to the material advantages of concrete and reinforcement,and effectively improve the embedded stiffness and durability of concrete foundation.

关 键 词：风力发电机 剪切强度 组合结构 界面受剪 新型剪力键 嵌固刚度 

分 类 号：TU398.9[建筑科学—结构工程]