南方电网技术2017，Vol.11Issue(11)：27-33,67,8.DOI:10.13648/j.cnki.issn1674-0629.2017.11.005
特高压复合支柱绝缘子力学性能试验研究
Experimental Study on Mechanical Properties of Ultra High Voltage Composite Post Insulators
摘要
Abstract
In order to study the mechanical properties of UHV solid composite post insulators,static lateral push test and dynamic property test are carried out.The strain at the bottom of composite post insulators,the force-displacement relationship,and fundamen-tal frequencies before and after the failure are obtained by arranging strain gauges at the bottom of the post insulators,displacement transduces and accelerometers on the top of post insulators,respectively.It's observed that the fractures on the metal flanges and the bond failure between the post insulator bar and the flange are the most common failure modes,and the fundamental frequency of the post insulators decreased significantly after its failure.The force-displacement relationship of the post insulator under lateral force can be divided into linear elasticity stage and elastic-plasticity stage.Except for the other parameters,the lateral load bearing capacity of the post insulators mainly depends on the height of flanges.Due to the higher bonding region and the better bonding effect,the insulator with a lager flange height will have a greater lateral load bearing capacity when other parameters of the post insulator bar are the same.For composite post insulator without reinforcement rib on the flange,the lateral bearing capacity of its components is different,and the bearing capacity of post insulator bar is higher than that of the flange and the bonding material.关键词
复合支柱绝缘子/力学性能/侧推试验/抗侧刚度/侧向承载能力Key words
composite post insulator/mechanical property/lateral push test/lateral stiffness/lateral load bearing capacity分类
信息技术与安全科学引用本文复制引用
张玥,谢强,何畅,卓然,罗兵,卢毓欣,胡蓉,孙帮新..特高压复合支柱绝缘子力学性能试验研究[J].南方电网技术,2017,11(11):27-33,67,8.基金项目
教育部霍英东青年科学家教育基金优选资助课题(114021).Supported by Fok Ying Tung Education Foundation for Young Scientists (114021). （114021）
