各种类型临时钢梁主要尺寸和适用行车条件表1扣轨梁容许最大跨度（m）层数单侧钢轨数量轨型（kg/m）单层钢轨双层钢轨2根3根4根5根6根7根8根9根10根12根381.2/2.02.0/2.72.4/3.23.0/3.43.3/3.63.5/3.83.8/4.04.0/4.24.3/4.44.5/4.5431.4/2.22.2/3.02.8/3.43.2/3.73.5/3.93.8/4.14.1/4.34.4/4.54.6/4.74.8/4.9501.7/2.62.6/3.43.2/3.83.5/4.13.9/4.44.2/4.64.5/4.94.9/5.15.1/5.35.4/5.4602.3/3.23.2/3.93.7/4.44.1/4.84.6/5.25.0/5.55.3/5.75.7/6.06.0/6.26.3/6.4注：（1）本表录自“专桥0153铁路桥梁抢修通用图集”。（2）活载按前进型机车单机随挂70kN/m均布活载（亦按JF型机车）计算。钢轨容许挠曲应力170MPa。梁的挠度不超过跨度的1/300。（3）表列容许最大跨度，斜线上的限速45km/h，斜线下的限速15km/h。（4）轨头磨损在5～9mm时应减少跨度10%，超过9mm时应减少20%。表2工字钢梁容许最大跨度（m）型钢号码单层热轧普通工字钢GB706—6532a2.0/2.83.7/4.64.7/5.75.5/6.2b2.1/3.03.8/4.74.8/5.75.6/6.3c2.2/3.03.9/4.74.9/5.85.8/6.536a2.4/3.34.2/5.25.3/6.46.3/7.1b2.5/3.34.3/5.45.5/6.56.4/7.3c2.7/3.44.5/5.55.6/6.66.6/7.440a3.0/3.64.8/5.96.0/7.27.1/8.0b3.0/3.74.9/6.16.2/7.37.3/8.2c3.1/3.85.0/6.26.3/7.57.5/8.345a3.4/4.25.6/6.97.0/8.48.4/9.3b3.5/4.35.7/7.17.3/8.58.6/9.5c3.6/4.45.9/7.37.5/8.68.8/9.650a3.9/4.96.5/8.08.3/9.69.7/10.7b4.0/5.06.6/8.28.4/9.710.0/10.9c4.2/5.26.9/8.58.8/10.010.4/11.256a4.5/5.57.4/9.19.4/10.911.2/12.2b4.6/5.77.6/9.39.6/11.111.5/12.4c4.7/5.87.8/9.59.9/11.311.8/12.663a5.1/6.38.6/10.410.9/12.512.9/13.9b5.3/6.58.8/10.811.3/12.813.3/14.3c5.4/6.79.1/11.111.6/13.013.6/14.5续上表型钢号码双层热轧普通工字钢GB706—6532a3.9/4.86.4/7.98.2/9.99.6/11.7b4.0/5.06.7/8.38.5/10.410.1/12.1c4.2/5.27.0/8.68.8/10.810.5/12.436a4.4/5.57.4/9.09.3/11.411.1/13.2b4.6/5.77.7/9.49.8/11.811.6/13.8c4.8/5.98.1/9.810.2/12.312.1/14.240a5.0/6.28.4/10.210.7/12.812.6/14.8b5.2/6.48.7/10.711.2/13.313.1/15.4c5.4/6.79.1/11.111.6/13.813.7/16.045a5.9/7.29.9/11.912.5/14.714.7/17.3b6.1/7.610.3/12.413.1/15.315.3/18.0c6.3/7.910.7/12.813.5/15.915.9/18.750a6.8/8.411.5/13.714.5/17.017.1/20.0b7.1/8.712.0/14.115.0/17.617.8/20.6c7.4/9.012.4/14.615.6/18.318.6/21.256a7.9/9.613.2/15.516.6/19.419.8/22.4b8.1/9.913.6/16.017.2/20.020.4/23.0c8.5/10.314.2/16.618.0/20.821.2/24.263a9.0/11.115.1/17.819.3/22.122.5/25.8b9.4/11.415.7/18.420.1/22.723.4/26.7c9.8/11.816.3/19.120.7/23.424.4/27.6续上表型钢号码单层旧规格33a2.1/3.03.8/4.74.8/5.85.6/6.4b2.2/3.03.9/4.84.9/5.85.8/6.5c2.3/3.14.0/5.05.0/6.05.9/6.736a2.4/3.34.2/5.25.3/6.46.3/7.1b2.5/3.34.3/5.45.5/6.56.4/7.3c2.7/3.44.5/5.55.6/6.66.6/7.440a3.0/3.64.8/5.96.0/7.27.1/8.0b3.0/3.74.9/6.16.2/7.37.3/8.2c3.1/3.85.0/6.26.3/7.57.5/8.345a3.4/4.25.6/6.97.0/8.48.4/9.3b3.5/4.35.7/7.17.3/8.58.6/9.5c3.6/4.45.9/7.37.5/8.68.8/9.650a3.9/4.96.5/8.08.3/9.69.7/10.7b4.0/5.06.6/8.28.4/9.710.0/10.9c4.2/5.26.9/8.58.8/10.010.4/11.255a4.4/5.57.3/9.09.3/10.711.1/12.0b4.5/5.67.5/9.29.5/11.011.3/12.2c4.6/5.77.7/9.49.8/11.111.6/12.463a5.0/6.18.3/10.010.5/12.012.4/13.4b5.1/6.28.5/10.310.8/12.212.7/13.6c5.2/6.48.7/10.611.0/12.413.0/13.8续上表型钢号码双层旧规格33a4.0/4.96.6/8.18.4/10.29.9/11.9b4.1/5.26.9/8.58.7/10.610.3/12.4c4.3/5.47.2/8.89.1/11.110.8/12.836a4.4/5.57.4/9.09.3/11.411.1/13.2b4.6/5.77.7/9.49.8/11.811.6/13.8c4.8/5.98.1/9.810.2/12.312.1/14.240a5.0/6.28.4/10.210.7/12.812.6/14.8b5.2/6.48.7/10.711.2/13.313.1/15.4c5.4/6.79.1/11.111.6/13.813.7/16.045a5.9/7.29.9/11.912.5/14.714.7/17.3b6.1/7.610.3/12.413.1/15.315.3/18.0c6.3/7.910.7/12.813.5/15.915.9/...
