RESEARCH ON WIND RESISTANCE OF FLANGE JOINTS OF LIGHTNING ROD WITH PRESTRESSED HOOPS

PENG Shengjiang; ZHANG Guangping; WANG Xiuli; WEI Jianmin; ZHANG Fuping; ZHU Zhongcheng

doi:10.13204/j.gyjzG21053120

Volume 51 Issue 10

Feb. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(10): 109-115,121

PENG Shengjiang, ZHANG Guangping, WANG Xiuli, WEI Jianmin, ZHANG Fuping, ZHU Zhongcheng. RESEARCH ON WIND RESISTANCE OF FLANGE JOINTS OF LIGHTNING ROD WITH PRESTRESSED HOOPS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 109-115,121. doi: 10.13204/j.gyjzG21053120

Citation:

PENG Shengjiang, ZHANG Guangping, WANG Xiuli, WEI Jianmin, ZHANG Fuping, ZHU Zhongcheng. RESEARCH ON WIND RESISTANCE OF FLANGE JOINTS OF LIGHTNING ROD WITH PRESTRESSED HOOPS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 109-115,121. doi: 10.13204/j.gyjzG21053120

Citation:

PENG Shengjiang, ZHANG Guangping, WANG Xiuli, WEI Jianmin, ZHANG Fuping, ZHU Zhongcheng. RESEARCH ON WIND RESISTANCE OF FLANGE JOINTS OF LIGHTNING ROD WITH PRESTRESSED HOOPS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 109-115,121. doi: 10.13204/j.gyjzG21053120

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RESEARCH ON WIND RESISTANCE OF FLANGE JOINTS OF LIGHTNING ROD WITH PRESTRESSED HOOPS

doi: 10.13204/j.gyjzG21053120

1. State Grid Gansu Electric Power Company, Lanzhou 730050, China;
2. China Energy Engineering Group, Gansu Electric Power Design Institute Co., Ltd., Lanzhou 730050, China;
3. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
4. Western Center of Disaster Mitigation of Ministry of Education, Lanzhou 730050, China

Received Date: 2021-05-31
Available Online: 2022-02-21

Abstract

Abstract

For the failure of lightning rod in transmission tower, an innovation connection between the lighting rod and the transmission tower was proposed based on the concept of reducing the stress amplitude of high-strength bolts and realizing double protection, namely steel strand reinforced flange joint. The finite element model was established by using the finite element software WORKBENCH. The stress and displacement were studied on two kinds of joints for lightning rods at different wind speeds and steel strand pretensions of 20 kN. The stress nephogram, streamline vector diagram,stress and displacement response of the lightning rod structure caused by fluid were expressed under the wind velocity of 5 m/s,15 m/s,30 m/s, and 50 m/s. The contrastive analysis was carried on the stress and displacement response of the lightning rod with the measured values under different loading conditions. The analysis results showed that the lightning rod was subjected to the same fluid pressure under the same load. The stress was the largest at the connection between the lightning rod and the herringbone column. The research results showed that the new lightning rod could significantly reduce the peak values compared with the conventional lightning rod. It was more effectively in reducing the stress peak values on the connecting bolts so as to ensure the safe use of the lightning rod. The higher the wind speed, the more obvious the effect.
- flange joint of lightning rod,
- wind resistance,
- CFD,
- steel strand reinforcement,
- numerical simulation

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References(17)

References

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