RESEARCH ON MECHANICAL PROPERTIES OF COMPOSITE CROSS ARMS IN HIGH-VOLTAGE TRANSMISSION LINES

CAI Kangyi; FANG Qing; DU Xinxi; YUAN Huanxin; LIU Huanhuan; ZHANG Chuanyi

doi:10.13204/j.gyjz202004028

Volume 50 Issue 4

Jun. 2020

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2020 > 50(4): 162-167,150

Luo Sihai, Hu Wei, Pan Xiaoqing, Deng Tongfa, Yang Zeping. COMPARISON OF COMPRESSION BEHAVIOR OF SOIL AFTER PRE-DENSIFICATION BY STATIC OR DYNAMIC LOADS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(10): 68-71. doi: 10.13204/j.gyjz201110017

Citation:

CAI Kangyi, FANG Qing, DU Xinxi, YUAN Huanxin, LIU Huanhuan, ZHANG Chuanyi. RESEARCH ON MECHANICAL PROPERTIES OF COMPOSITE CROSS ARMS IN HIGH-VOLTAGE TRANSMISSION LINES[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(4): 162-167,150. doi: 10.13204/j.gyjz202004028

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RESEARCH ON MECHANICAL PROPERTIES OF COMPOSITE CROSS ARMS IN HIGH-VOLTAGE TRANSMISSION LINES

doi: 10.13204/j.gyjz202004028

1. School of Civil Engineering, Wuhan University, Wuhan 430072, China;
2. Hubei Electric Engineering Co., Ltd., Wuhan 430040, China;
3. Wuhan Nari Electric Power Engineering Technology&Equipment Limited Company, Wuhan 430415, China;
4. State Grid Suizhou Electric Power Co., Ltd., Suizhou 441300, China

Received Date: 2019-12-20

Abstract

Abstract

The mechanical properties of composite cross arms made of glass fiber reinforced polymer for 500 kV and 220 kV transmission line were studied. Static test and numerical analysis of two types of composite cross arms under different load conditions were conducted. The bearing capacity and deformation performance of the test models were investigated. The ultimate bearing capacity of composite cross arms was also analyzed. It was revealed that the composite cross arms were globally stable and connections were safe under all experimental load conditions. The numerically and experimentally obtained strain and deformation curves were in good agreement with each other. Meanwhile, the residual strain or deformation of each measured point was negligible after unloading. It was also shown that the composite cross arms were in the elastic working stage and exhibited a satisfactory safety reserve. The ultimate bearing capacity of composite cross arms for 500 kV and 220 kV transmission line were 2.9 times and 1.7 times of design load under the least favorable load condition respectively.
- high-voltage transmission line,
- glass fiber reinforced polymer,
- cross arm,
- static test,
- finite element

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References

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