摘要
通过分析指出了当前设计规范中关于计算输电塔风振系数方面条文规定中存在的问题,详细介绍了基于准稳定理论并采用Davenport谱计算输电塔架风振系数的方法,有助于更好理解风振系数的概念。按照给出的计算步骤,编制程序计算了某大跨越输电塔的风振系数,并与按照规范方法计算得到的风振系数进行比较,发现顶部横担处风振系数最大,并且随着高度的增大,风振系数在每个横担高度处都会突然增大,这一点值得工程设计人员注意。
After analysis the paper points out that there are problems existing in the current design specifications about transmission tower wind vibration coefficient calculation, introduces Davenport spectrum calculation method based on quasi-stable theory, which is helpful to understand wind vibration coefficient concept better. According to given calculation steps the wind vibration coefficient of a certain large crossing tower is calculated with a generated program and its result is compared with one calculated with the current specifications. The maximum coefficient is found on the top crossarm and with height rise it is increased suddenly at each crossarm height, to which engineering designer should pay attention.
出处
《电力建设》
2009年第6期36-38,共3页
Electric Power Construction
关键词
准稳定理论
DAVENPORT谱
输电塔
风振系数
quasi-stable theory
Davenport spectrum
transmission tower
wind vibration coefficient
