Finite-Difference Time-Domain Analysis of the Electromagnetic Environment in a Reinforced Concrete Structure When Struck by Lightning

被引：24
|
作者：
Chen, Jiaqing [1 ]
Zhou, Bihua [2 ]
Zhao, Fei [3 ]
Qiu, Shi [2 ]
机构：
[1] Peoples Liberat Army Univ Sci & Technol, Inst Meteorol, Nanjing 210007, Peoples R China
[2] Nanjing Engn Inst, Nanjing 210007, Peoples R China
[3] Peoples Liberat Army Univ Sci & Technol, Inst Command Automatizat, Nanjing 210007, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2010年 / 52卷 / 04期
关键词：
Electromagnetic environment; finite-difference timedomain (FDTD); induced magnetic field; lightning; reinforced concrete structure;
D O I：
10.1109/TEMC.2010.2043437
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
When a building is directly struck by lightning, the electromagnetic environment in the structure is very severe, and the conducted and radiated electromagnetic disturbances are dangerous to the information technology equipment in the building. In this paper, instead of the equivalent circuit method and method of moment used by the former researchers, the finite-difference time-domain method is applied to calculate the impulse response in a reinforced steel structure struck by lightning. Besides a reasonable concordance between the calculation results of current distribution among the vertical columns and those of former experiments, the oscillations superimposed on the current flowing along the reinforced bars, and the relation between the oscillation intensity and the soil conductivity are discussed. Furthermore, the role of a ring conductor to stabilize its interior electromagnetic field is discussed in detail.
引用
收藏
页码：914 / 920
页数：7
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