三心拱计算公式(1)

巷道断面积计算公式我的数据2009-08-0115:04阅读37评论0字号:大中小巷道断面积计算公式道面积公式三心拱S=B0(h20.262B0)S=B0(h20.198B0)S=B0(h20.161B0)圆弧拱S=B0(h20.241B0)S=B0(h20.175B0)S=B0(h20.138B0)半园拱S=B0(h20.39B0)注:式中h2为墙高Bo为巷道宽度f0为拱高拱形巷道参数几何参数结项目构形式f0,1/3BOf0,1/4BOf0,1/5BO0.9827941.1071491.190290弧度α56-18-3663-26-0668-11-55角度0.5880030.4636480.380506弧度β33-41-2426-33-5421-48-05角度0.691898BR0.904509B01.128887B0三0心拱0.260957Br0.172746B00.128445B000.333333Bf00.25B00.2B001.326610BS1.221258B01.164871B00ψ1.1760050.9272950.761013弧度b67-22-4853-07-4843-36-10角度0.541667BR0.625B00.725B0圆0弧拱0.333333Bf00.25B00.2B001.274006BS1.159119B01.103469B00S——为拱弧长f0——拱高B0——巷道宽度α——小圆角度β——大圆角度R——大圆半径r——小圆半径巷道面积公式三心拱S=B0(h20.262B0)S=B0(h20.198B0)S=B0(h20.161B0)圆弧拱S=B0(h20.241B0)S=B0(h20.175B0)S=B0(h20.138B0)半园拱S=B0(h20.39B0)