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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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

[1]	刘冉.基于双向流固耦合的变电构架避雷针结构风振响应分析[D].郑州:郑州大学, 2019.
[2]	WANG Y Q, ZONG L, SHI Y J.Bending Behavior and Design Model of Bolted Flange-Plate Connection[J].Journal of Constructional Steel Research, 2013, 84:1-16.
[3]	BLACHOWSKI B, GUTKOWSKI W.Effect of Damaged Circular Flange-Bolted Connections on Behaviour of Tall Towers, Modelled by Multilevel Substructuring[J].Engineering Structures, 2016, 111:93-103.
[4]	ABID M, CHATTHA J A, KHAN K A.Finite Element Analysis of a Gasketed Flange Joint Under Combined Internal Pressure and Thermal Transient Loading[C]//ASME 2007 Pressure Vessels and Piping Conference.American Society of Mechanical Engineers Digital Collection, 2007:261-267.
[5]	PARNAUDEAU P, CARLIER J, HEITZ D, et al.Experimental and Numerical Studies of the Flow Over a Circular Cylinder at Reynolds Number 3900[J].Physics of Fluids, 2008, 20(8):85-101.
[6]	MARA T G, HONG H P.Effect of Wind Direction on the Response and Capacity Surface of a Transmission Tower[J].Engineering Structures, 2013, 57:493-501.
[7]	YANG S C, HONG H P.Nonlinear Inelastic Responses of Transmission Tower-Line System Under Downburst Wind[J].Engineering Structures, 2016, 123:490-500.
[8]	ZHANG J, XIE Q.Failure Analysis of Transmission Tower Subjected to Strong Wind Load[J].Journal of Constructional Steel Research, 2019, 160:271-279.
[9]	陈文礼, 李惠.基于RANS的圆柱风致涡激振动的CFD数值模拟[J].西安建筑科技大学学报(自然科学版), 2006(4):509-513.
[10]	董国朝.钝体绕流及风致振动流固耦合的CFD研究[D].长沙:湖南大学, 2012.
[11]	徐枫.结构流固耦合振动与流动控制的数值模拟[D].哈尔滨:哈尔滨工业大学, 2009.
[12]	宋群群.输电线的流固耦合振动数值分析[D].重庆:重庆大学, 2014.
[13]	变电站钢结构变截面避雷针涡振现象及现场措施分析[J].科技创新与应用, 2016(28):199-200.
[14]	邵波, 罗烈, 张广平, 等.基于CFD的750 kV变电构架单钢管避雷针结构绕流分析[J].特种结构, 2019, 36(5):88-96.
[15]	洪成, 上官之政, 杨雄, 等.基于CFD的避雷针塔风速流场数值模拟[J].南昌工程学院学报, 2019, 38(1):50-55.
[16]	曾德伟.新型锻造法兰节点受力性能研究[D].武汉:武汉大学, 2013.
[17]	李文侠.加强型泥石流柔性防护体系抗冲击性能研究[D].兰州:兰州理工大学, 2016.