河北工业科技2024，Vol.41Issue(6)：450-460,11.DOI:10.7535/hbgykj.2024yx06007
不同连接刚度二次设备柜振动台试验与数值模拟研究
Shaking table test and numerical simulation study of secondary equipment cabinet with different connection stiffness
摘要
Abstract
In order to improve the seismic performance and resilience of substation's secondary equipment cabinets,the influence of the bottom connection stiffness of the secondary equipment cabinets(SEC)on its dynamic response was investigated.Shaking table test was carried out on six SECs with different connection forms,numerical simulation of the tests was carried out using ABAQUS software,and parametric analysis of the bottom connection stiffness was carried out.The results show that the number of screws at the bottom significantly affects the basic frequency of the equipment cabinet,and the basic frequency of the equipment cabinet increased 61.8%after the number of screws increased two times.After the test,the basic frequency of the spliced equipment cabinet decreased by 17.2%,which was the largest decrease among all the equipment cabinets,and the bottom connection stiffness of the spliced equipment cabinet should be strengthened.The possibility of strength damage of the equipment cabinet under seismic action was small,and more attention should be paid to the effect of the acceleration response on the working performance of the equipment.As the vertical stiffness of the bottom screw increased,the peak acceleration of the equipment cabinet first increased and then decreased.Peak acceleration at the top of the equipment cabinet increased by 16.6%to 74.2%.As the horizontal stiffness of the bottom screw increased,the peak acceleration of the equipment cabinets decreased.Peak acceleration at the top of the equipment cabinet decreased by 3.28%～29.6%.This study can provide important reference for the seismic design of substation's secondary equipment cabinets and the construction of seismic resilient substations.关键词
金属结构/二次设备柜/连接刚度/振动台试验/动力响应Key words
metal structure/secondary equipment cabinet/connection stiffness/shaking table test/dynamic response分类
建筑与水利引用本文复制引用
程智余,张天忠,胡广润,王开库,何宇辰,冯玉龙,于飞,曾志豪..不同连接刚度二次设备柜振动台试验与数值模拟研究[J].河北工业科技,2024,41(6):450-460,11.基金项目
国网安徽省电力有限公司科技项目(521209220006) （521209220006）
安徽省自然科学基金(2208085ME150) （2208085ME150）
