三心拱巷道参数断面计算表.pdf

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1、三心、圆弧、半园拱形巷道断面参数计算表三心拱圆弧拱1/3拱：f0=B0/3;S=B0(h2+0.262B0)f0=B0/3;S=B0(h2+0.241B0)1/4拱：f0=B0/4;S=B0(h2+0.198B0)f0=B0/4;S=B0(h2+0.175B0)1/5拱：f0=B0/5;S=B0(h2+0.161B0)f0=B0/5;S=B0(h2+0.138B0)半园拱S=B0(h2+0.39B0)注：式中h2为墙高；B0为巷道宽度；f0为拱高。拱形巷道参数表几何参数结构形式项目f0＝1/3B0f0＝1/4B0f0＝1/5B0弧度

2、0.9827941.1071491.190290α角度56°18′36″63°26′06″68°11′55″弧度0.5880030.4636480.380506β角度33°41′24″26°33′54″21°48′05″三心拱R0.691898B00.904509B01.128887B0r0.260957B00.172746B00.128445B0f00.333333B00.25B00.2B0S1.326610B01.221258B01.164871B0弧度1.1760050.9272950.761013ψb角度67°22′48″5

3、3°07′48″43°36′10″圆弧拱R0.541667B00.625B00.725B0f00.333333B00.25B00.2B0S1.274006B01.159119B01.103469B0注：表中S：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