[1]王朝华,赵桂峰,刘冉,等.高压变电站构架避雷针结构承载力分析与加固研究[J].郑州大学学报(工学版),2020,41(03):85-90.[doi:10.13705/j.issn.1671-6833.2019.02.011]
　Dynasty,Zhao Guifeng,Liu Ran,et al.Bearing capacity and reinforcement analysis of a high voltage substation framework with lightning rods[J].Journal of Zhengzhou University (Engineering Science),2020,41(03):85-90.[doi:10.13705/j.issn.1671-6833.2019.02.011]
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高压变电站构架避雷针结构承载力分析与加固研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
41卷
期数:
2020年03期
页码:
85-90
栏目:
出版日期:
2020-07-29

文章信息/Info

Title:
Bearing capacity and reinforcement analysis of a high voltage substation framework with lightning rods
作者:
王朝华; 赵桂峰; 刘冉; 陈怡文
1. 国家电网河南省电力公司电力科学研究院,2. 郑州大学土木工程学院
Author(s):
Dynasty 1; Zhao Guifeng 2; Liu Ran 2; Chen Yiwen 2
1. Electric Power Research Institute of State Grid Henan Electric Power Company; 2. School of Civil Engineering, Zhengzhou University
关键词:
构架避雷针结构; 静力承载力; 风致动力响应; 相贯节点
Keywords:
Frame lightning rod structure; Static bearing capacity; wind-induced dynamic response; intersecting node
DOI:
10.13705/j.issn.1671-6833.2019.02.011
文献标志码:
A
摘要:
建立了典型构架避雷针结构的ANSYS有限元模型，对其进行设计荷载组合工况下的静力承载力分析和风致动力响应分析.结果表明：典型构架避雷针结构T型相贯节点处由于构造缺陷易出现应力集中现象，在该区域设置加劲肋可显著降低相贯节点区的应力水平，有效缓解应力集中现象.现行规范拟静力方法设计的构架避雷针结构是偏于不安全的，实际设计时建议将规范拟静力方法得到的结果乘以一个不小于1.6的动力放大系数以考虑脉动风对结构的不利影响
Abstract:
finite element model of a typical substation framework with lightning rods was established by using ANSYS software. The static bearing capacity and wind-induced dynamic response analysis were carried out under the design load combination conditions. The results show that the stress concentration phenomenon is easy to occur due to the structural defects in the T type tubular joint of the typical substation structure with lightning rods, and it can be effectively relieved by installing stiffening ribs in the T type tubular joint area. Furthermore, the lightning rod designed by the current standard static method is unsafe. In actual design, it is suggested that the results of the pseudo static method be multiplied by a dynamic amplification factor of less than 1.6 to take into account the adverse effects of the pulsating wind on the structure
更新日期/Last Update: 2020-07-29