利用AutoCAD几何求解3支不等高避雷针保护范围

建筑物防直击雷设计中,通常采用多支避雷针形成联合保护,多支不规则不等高避雷针的内部保护范围需要将避雷针分为3支一组,采用求解三元二次方程组的复杂方法,手算工作量大、效率低,编程实现也有相当的难度。利用AutoCAD带有的向量计算和坐标变换功能,巧妙利用几何方法解析出3支不等高避雷针内部的保护范围。

Using AutoCAD to Determine Protection Range of Triple Unequal Height Lighting Rods

In the Anti-Thunderstorm design of buildings,multiple lighting rods are often used to form a joint protection range.To know the protection range of the multiple lighting rods needs to divide the protection range into three unequaled parts,and solve the ternary quadratic equations,which is difficult and has low efficiency.The AutoCAD＇s vector calculation and the coordinate transform function are used to analyze the protection range of triple unequaled-height lighting rods,which is much simpler than solving the ternary quadratic equations.