Horizontal curves - railways, Mechanical Engineering

Horizontal Curves - Railways

In railway engineering, the horizontal curve is defined by its degree as well as by its radius. The degree is the angle subtended at the centre by a chord of 100 ft (30.5 m).

780_Horizontal Curves.png

Figure: Degree of a Curve

D = 360/2π R× 30.5

assuming that the length of chord and arc is the same.

= 1750/R

For Broad Gauge, the maximum degree of curvature permitted is 100 or 175 m radius.

When a train is travelling on a curve, the outer rail has to be raised with respect to the inner rail to counteract the centrifugal force (Figure).

866_Horizontal Curves1.png

Figure: Force on a Vehicle Moving on a Curved Path

The super-elevation (or cant) is given by the equation:

e =       V2/gR

where  e =  Superelevation,

v =  Speed in m/sec,

R = Radius in m, and

g = Acceleration due to gravity.

= V2/127 R

where  V =  Speed in Km/hr.

The maximum super-elevation provided on a BG track is 165 mm. A horizontal curve requires transitional ends.

Posted Date: 1/23/2013 12:34:25 AM | Location : United States







Related Discussions:- Horizontal curves - railways, Assignment Help, Ask Question on Horizontal curves - railways, Get Answer, Expert's Help, Horizontal curves - railways Discussions

Write discussion on Horizontal curves - railways
Your posts are moderated
Related Questions
EQUIPMENT FOR RESISTANCE WELDING-Protection A circuit breaker can be provided (this equipment can be rated for interrupted capacity) which will cater to a number of resistance

Keywords related to Air transportation: Airfield/Airport       :            The area which contains the facilities needed for the operation of aircraft. Apron

Currency Bull Spread and Bear Spread: A currency bull spread is constructed by buying a call option for a particular underlying currency and simultaneously writing a call opti

Information phase of screw conveyor with auger: Steps: To secure all and complete information and gather facts and from best sources.Our project is selected based on the cu

hey ...!!!! i am looking for hydraulic car lift circuit diagram. can any 1 plzzz help me did this?

when 2 bodies are connected by a string show the direction of acceleration

Q. What do you understand by Binders? Binders used in a foundry are : Inorganic and organic binders. Organic binders used for core making and will be discussed later. Clay b

Cylinder Bore: The nominal inner diameter of the working cylinder is called the cylinder bore and is designated by the letter D and is usually expressed in millimetre (mm).

Application of Hydrostatic sensor paver machine The Hydrostatic sensor paver machine that is used for lying bituminous Mixed material, roll-down or lean-mixed concrete, track-

Calculated the diameter of an aluninium shaft: Calculated the diameter of an aluninium shaft that is designed to store the similar amount of strain energy per unit volume as a