(3) A class I single track railway with mixed passenger and freight lines has a maximum gradient of 9 % and it adopts el

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3 A Class I Single Track Railway With Mixed Passenger And Freight Lines Has A Maximum Gradient Of 9 And It Adopts El 1 (65.22 KiB) Viewed 105 times

(3) A class I single track railway with mixed passenger and freight lines has a maximum gradient of 9 % and it adopts electric traction. The short-term length of the freight train is 600m and the long-term length is 800m. The line plan of one section is shown in the figure below. It is known that the design elevation of point a is 500.00m, and the section from A to B needs to use the upgrade with ruling grade to be designed. It is required to design its profile, write down the design process, illustrate the design results, and calculate the design elevation of point B (two decimal places are reserved). A 50 -30° R-1600 Le-837.76 237.76 562.24 Ls 800m 40.13 -32° R-600 Le-334.93 B 24.94