摘要
以一个位于高层建筑物顶部的电梯机房作为研究对象,结合其地理位置、闪电环境和雷电防护现状,进行了雷击电磁脉冲分析。对于电梯机房的各类屏蔽条件,分别对机房内设备的感应电压进行了相应的计算分析,给出了电梯机房需要采取的屏蔽措施和其它防护措施,得出结论:①无论雷电击中电梯机房还是击中建筑物附近,若无屏蔽措施均将影响电梯正常运行;②位于建筑物顶部的电梯机房在做好基本防雷措施的基础上,还需要采取金属网格(钢筋半径为0.002m、网格宽度为0.01m)进行屏蔽。
An analysis is made of the lightning electromagnetic pulses in the elevator on a high building top,combined with its geographical location,lightning environment,and lightning protection status.For the various types of shielding conditions of the elevator room,the induced voltages of the equipment are calculated,respectively.The shielding measures and other protection measures needed for the elevator are discussed.It is concluded that without shielding measures,the operation of the elevator will be affected,whether the lightning strikes on the elevator machine room or nearby buildings.With basic lightning protection measures,the elevator at the top of the building should install also a metal grid shielding(steel),with a radius of 0.002 m,a grid width of 0.01 m.
出处
《气象科技》
2013年第2期422-424,共3页
Meteorological Science and Technology
关键词
电梯机房
雷击电磁脉冲
屏蔽措施
elevator,lightning electromagnetic impulse,shielding measure
