输电塔可靠度设计中统计参数研究

摘要

In order to analyze the component reliability of the transmission tower, statistical parameters of the load effect were calculated. Considering theuncertainty of material properties, geometry and computational model and aiming at Q235, Q345 and Q390 steel commonly used in the transmission tower, four typical stressed member were calculated to obtain its resistance statistical parameters. The calculation results can provide reference for the establishment of probability limit state design methods of the transmission tower.%为方便分析输电线路杆塔构件可靠度,本文通过计算得到荷载效应统计参数,考虑材料性能不定性、几何参数不定性和计算模式不定性,针对输电塔常用的Q235、Q345和Q390钢材,对4种典型受力构件进行计算得到其抗力统计参数.计算结果可为建立输电塔概率极限状态设计方法提供参考.为方便分析输电线路杆塔构件可靠度,本文通过计算得到荷载效应统计参数,考虑材料性能不定性、几何参数不定性和计算模式不定性,针对输电塔常用的Q235、Q345和Q390钢材,对4种典型受力构件进行计算得到其抗力统计参数.计算结果可为建立输电塔概率极限状态设计方法提供参考.