Experimental study of strength and dispersion of main joints on transmission tower in low temperature

被引：0
|
作者：
An L. [1 ]
Zhang H. [1 ]
Jiang W. [1 ]
Ge Y. [1 ]
机构：
[1] Department of Mechanical Engineering, North China Electric Power University, Baoding
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2018年 / 49卷 / 09期
基金：
中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;
关键词：
Dispersion; Low temperature; Main joints; Strength property;
D O I：
10.11817/j.issn.1672-7207.2018.09.032
中图分类号：
学科分类号：
摘要：
In order to apply the current research of steel materials to the design of the bolt joints in transmission tower, tensile tests of materials (139 specimens) and joints (216 specimens) in low temperatures were conducted respectively. And a calculated method of strength properties considering the bolt slippage was presented. The strength and the variation characteristics of steel and joints under different temperatures were studied. According to the national standards, the distribution and statistical parameters of joint yield strength were also researched in low temperatures. The results show that the yield to ultimate ratio of the joint under low temperature conditions exceeds the usual range of steel material 0.60-0.75; the resistance partial factors of the joints are less than the reference value of the steel material, and the design value of joint strength exceeds the standard specification by 10% generally. The design value of yield strength and resistance partial factor should be selected based on the change of yield ratio of main joints in low temperatures. © 2018, Central South University Press. All right reserved.
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页码：2356 / 2364
页数：8
相关论文
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