摘要
雷击建筑物时室内磁场分布的分析对雷电危害的准确评估具有重要意义。笔者用数值仿真方法分析导电构架对建筑物遭雷击时室内磁场分布的影响。介绍了数值仿真方法并对其有效性进行了实验验证。应用建立的仿真程序分析导电构架结构、导体形状和尺寸及施工质量等因素对室内磁场分布的影响程度。发现磁场分布主要取决于建筑物导电构架的结构,避雷针在建筑物顶部的安装位置和施工质量对磁场分布有较大的影响。最后根据分析结果对建筑物防雷构架的设计和施工提出建议。
In a Building lightning hazard evaluation, the inside magnetic field distribution is an important factor. This paper investigates conducting structure' s influence on magnetic field distributions through numerical simulations. The effectiveness of the simulation method was validated experimentally. Applying this method, the magnetic field distribution impact of some conducting structure factors, such as the structure of the conducting flame, the conductor's shape and size, and the joint practice etc, are analyzed. It is found that the magnetic field distribution is dominated by the structure of the conducting flame. The location of lightning rod and the conductor joint practice have significant influences on the magnetic field distribution. Finally some suggestions on the design and construction of lightning protection structures are given.
出处
《建筑电气》
2001年第3期29-34,共6页
Building Electricity
关键词
建筑物
防雷
磁场计算
导电构架
室内磁场
Building lightning protection Magnetic field calculation Building conducting structure
