道路平均照度Eav、道路照明功率密度LDP计算
工程
路基工程安全技术交底工程项目施工成本控制工程量增项单年度零星工程技术标正投影法基本原理
:XXX路灯工程序号123456789101112道路宽度W(m)121212121212121212121212灯杆距路缘距离Ly(m)0.50.50.50.50.50.50.50.50.50.50.50.5灯臂长度Lt(m)333333333333悬挑长度Lx(m)Lx=Lt-Ly2.52.52.52.52.52.52.52.52.52.52.52.5灯具安装高度H(m)131313131313131313131313维护系数U0.70.70.70.70.70.70.70.70.70.70.70.7灯具效率K0.40.40.40.40.40.40.40.40.40.40.40.4布灯系数N222222222222道路有效宽度Weff(m)Weff=W-Lx9.59.59.59.59.59.59.59.59.59.59.59.5路灯间距S(m)303030303030303030303030路灯光源功率P(W)400400400400400400400400400400400400光源光通量φ(lm)440004400044000440004400044000440004400044000440004400044000道路平均照度Eav(lx)Eav=(φ×U×K×N)/(Weff×S)86.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.4561403586.45614035道路照明功率密度LDP(W/m2)LDP=P/(Weff×S)1.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.4035087721.403508772