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Tham khảo tài liệu 'thiết kế giao thông công cộng', kỹ thuật - công nghệ, kiến trúc - xây dựng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | RAILWAYS IC TXANSHRT s 64 S41 I----12.5-----1 The common rail sections rail section G kg m run A cm2 K head cm3 y x base cm3 Wy . cm3 Ịx cm4 I cm4 s 41 40.95 52.2 196.0 200.5 41.7 1368 260 s 9 49.43 63.0 240.2 248.2 51.0 1819 320 s 54 54.54 69.4 262.4 276.4 57.0 2073 359 S64 64.92 82.4 355.9 403.5 80.5 3253 604 UIC 60 60.34 76.9 335.5 377.4 68.4 3055 513 Ri 59 58.96 75.1 372.6 351.8 81.0- 3257 781 Wy1 118cm3 because of asymmetry Rail dimensions T H 30 I H 51 2.60 Concrete sleeper B70 8 Standard cross-section for a twin track bed Track Installations For further information on British railways contact Safety and Standards Directorate Railtrack PLC London. For further information on European railways contact the Union of European Railway Industries Brussels. 0 c T _ centre-line of track centre of trac distance between centres d t 1 -1 J 9 Distance between centre-lines of tracks The key standard distances d between track centre-lines are as listed below On open stretches of track 4.00m 3.5m on older stretches - where signals are installed 4.50 m - as safety space after every second track 5.40 m - on newly built stretches V 200km h 4.70 m In stations 4.50m 4.75m - main lines straight through 4.00 m - in sets of 5-6 lines 6.00 m - for brake inspection test tracks 5.00 m - in sidings for carriage cleaning 5.00 m The standard gauge for the UK and for 71 of all the railways in the world is 1.435m. Tolerances on the gauge width are as follows -3 30 mm on main lines -3 35 mm on branch lines Gauges in other countries are Russia 1.520m Spain and Portugal 1.668m South and Central Africa 1.067m Chile Argentina and India 1.673m. Typically the expected life of sleepers can be taken to be as follows timber sleepers impregnated with creosote 25-40years timber sleepers unimpregnated 3-15years steel sleepers about 45years concrete sleepers estimated at least 60years The depth of trench in a cutting should be 0.4-0.6m below grade and the slope of the trench 3-10 depending on the type of
