Abstract

For the dynamic fatigue problem of transmission tower cross arms caused by the strong wind load, an experimental study on low-cycle fatigue behavior of a new type full-scale glass-fiber-reinforced polymers (GFRP) cross arm with steel sleeves was carried out. A total of six specimens were subjected to cyclic loading for simulating low-cycle fatigue. The stress state was monitored. The variety of load-displacement-time curve, energy dissipation and dynamic strain were analyzed. The ultimate bearing capacity of the specimens without significant fatigue failure was examined to derive residual bearing capacity. Based on the residual strength theory, the cumulative damage was evaluated to predict the fatigue life. It is shown that the GFRP cross arms demonstrated favourable anti-fatigue performance, and can be expected to provide important reference for wind res istance design in transmission tower line system.

Details

Title
Low-cycle fatigue behavior of glass-fiber-reinforced polymers cross arms with steel sleeves
Author
Sun, H B 1 ; Sun, Q 2 ; Zhang, S J 1 ; Peng, Y L 1 ; Wang, J T 2 

 Henan Electric Power Survey & Design Institute, West Zhongyuan Road No. 212, 450007, Zhengzhou, Henan Province, China 
 Department of Civil Engineering, Xi’an Jiaotong University, West Xianning Road No. 28, 710049, Xi’an, Shaanxi Province, China 
Publication year
2019
Publication date
Apr 2019
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2560954268
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.