Skip to main content

Grade compensation of curve

GRADE COMPENSATION OF CURVE 

Grade compensation on curve is the reduction in gradient of curved portion of a track. On curve extra pull is required to pull the train due to more tractive resistance. Therefore if gradient are to be provided on curve some compensation should be given in rulling gradient to overcome that increased tractive resistance to a certain limit and to pull the train with same speed it is expressed as a percentage per degree of a curve. The grade compensation provided on Indian railway is as follows

1.On BG curves-0.04%/degree

2.on MG curves-0.03%/degree

3.on NG curves-0.02%/degree

Labels:

Comments

Post a Comment

Popular posts from this blog

point and crossing railway

Point and crossing points and crossing are special arrangement on the track to facilitate smote diversion of train from One track to another. Important terms in points and crossing main track: track from which are trains to be diverted is called main track. Branch track : track to which a train is diverted is called branch track. Tongue rail: the tappered movable rail which is attached at or near one end to a running rail is called tongue rail. Stock rail: stock rail is a running rail to which our tongue rail is attached. Switch: which is a pair of tongue rail with necessary connection. Points: a pair of tongue rail and stock rail with necessary connection form points. Heel of switch: heel of switch is untampered end of switch rail which is fixed to the lead rail. Toe of switch : toe of switch is the thin tapering end of the tongue rail. Heel of divergence :heel of divergence is a distance between the running face of the stock rail and that of the tongue rail measured at the heel...
Post a Comment
Read more

Different type of rail joint

  Supported rail joint: rail joint in which the rail ends rest on a single sleeper called "joint sleeper". Suspended rail joint:the rail joints in which the rail ends are projected beyond sleepers  are known as suspended rail joints Bridge rail joint : joints in the rail ends are projected beyond sleepers and are carried by the flat or corrugated plate called bridge plates are known as bridge rail joint. Welded rail joint : rail joint in which the rail ends are welded together are called rail joint Square or even rail joint :when the joint of one rail of a track are directly opposite the joint of another rail they are known as square or even rail joint Staggered or broken rail joint :in this the joint of one rail of a track are not directly opposite to the joint of other rail Compromise rail joint :the rail joint where two different railway sections are required to be join together are known as compromise rail joint.
Post a Comment
Read more

Working stress method

Assumption in theory of simple bending of RCC structure(working stress method) 1. A section which is plane before bending remains plane after bending. 2. The concrete and steel reinforcement are perfectly bonded . 3. All tensile stress are taken up by steel and non by concrete. 4.the stress strain relation of Steel and concrete under working load is a straight line. 5. The modulli of elasticty of Steel and concrete are constant.                                                                                  6. The modular ratio has the value                                       ,where.              Is the permissible compressive strength of concrete ...
Post a Comment
Read more