日照间距系数.doc

日照间距系数 日照间距系数图示根据日照标准确定的房屋间距与遮挡房屋檐高的比值。 日照间距的计算方法： 以房屋长边向阳，朝阳向正南，正午太阳照到后排房屋底层窗台为依据来进行计算。 日照间距系数=D/H,由此得日照间距应为：D=(H-H1)/tanh； 式中： D房屋间距 H前幢房屋檐口至地面高度； H1后幢房屋窗台至地面高度。 实际应用中，常将D换算成其与H的比值，即日照间距系数，以便于根据不同建筑高度算出相同地区、相同条件下的建筑日照间距。 日照间距计算示意图 D= L0 H L0（间距系数）=ctghcos H计算高度 H=层高X层数+女儿墙高度C C=首层窗台高+室内外地坪差 全国主要城市不同日照标准的间距系数序号城市纬度冬至日大寒日现行标准正午影长率日照1h正午影长率日照1h日照2h日照3h1漠河53004.143.883.333.113.213.332齐齐哈尔47202.862.682.432.272.322.431.82.03哈尔滨45452.632.462.252.12.152.241.51.84长春43542.392.242.071.931.972.061.71.85乌鲁木齐43472.382.222.061.921.962.046多伦42122.212.061.921.791.831.917沈阳41462.162.021.881.761.81.871.78呼和浩特40492.071.931.811.691.731.89大同400021.871.751.631.671.7410北京39571.991.861.751.631.671.741.61.711喀什39321.961.831.721.61.611.7112天津39061.921.81.691.581.611.681.21.513保定38531.911.781.671.561.61.6614银川38291.871.751.651.541.581.641.71.815石家庄38041.841.721.621.511.551.611.516太原37551.831.711.611.51.541.61.51.717济南36411.741.621.541.441.471.531.31.518西宁36351.731.621.531.431.471.5219青岛36041.71.581.51.41.441.520兰州36031.71.581.51.41.441.491.11.2;1.421郑州34401.611.51.431.331.361.4222徐州34191.581.481.411.311.351.423西安34181.581.481.411.311.351.41.01.224蚌埠32571.51.41.341.251.281.3425南京32041.451.361.31.211.241.31.0;1.11.826合肥31511.441.351.291.21.231.291.227上海31121.411.321.261.171.211.260.91.128成都30401.381.291.231.151.181.241.129武汉30381.381.291.231.151.181.240.70.9;1.01.130杭州30191.361.271.221.141.171.220.91.0;1.11.231拉萨29421.331.251.191.111.151.232重庆29341.331.241.191.111.141.190.81.133南昌28401.281.21.151.071.111.1634长沙28121.261.181.131.061.091.141.01.135贵阳26351.191.111.0711.031.0836福州26051.171.11.050.981.011.0737桂林25181.141.071.020.960.991.040.70.8;1.038昆明25021.131.061.010.950.981.030.91.039厦门24271.111.030.990.930.961.0140广州23081.060.990.950.890.920.970.50.741南宁22491.040.980.940.880.910.96142湛江21020.980.920.880.830.860.9143海口20000.950.890.850.80.830.88