答案:答:线间距D=(5.12+5.10+5.14)/3=5.12m道岔中交至连接曲线中交斜边长L=D/sina=5.12/sina=61.653m连接曲线切线长=R×tana/2=450×/tana2=18.717m夹直线长l=L-b-T=61.653-19.962-18.717=22.974m曲线上下股轨长:π/180=0.017453292上股=(R+0.7175)×4.4549×0.017453292=37.472m下股=(R-0.7175)×4.4549×0.017453292=37.354m。夹直线长为22.974m;曲线上股37.472m,下股37.354m。
答案:答:线间距D=(5.12+5.10+5.14)/3=5.12m道岔中交至连接曲线中交斜边长L=D/sina=5.12/sina=61.653m连接曲线切线长=R×tana/2=450×/tana2=18.717m夹直线长l=L-b-T=61.653-19.962-18.717=22.974m曲线上下股轨长:π/180=0.017453292上股=(R+0.7175)×4.4549×0.017453292=37.472m下股=(R-0.7175)×4.4549×0.017453292=37.354m。夹直线长为22.974m;曲线上股37.472m,下股37.354m。
A. 80-110Nm
B. 80-100Nm
C. 80-120Nm
D. 100-120Nm
A. 正确
B. 错误
A. 折断
B. 其他站线中间两螺栓孔范围内有裂纹
C. 其他部位裂纹发展到螺栓孔
D. 胶接绝缘夹板性能不良
A. 1
B. 2
C. 3
D. 4