In last article,we have obtained a relation for the superelevation in railways. The superelevation obtained,by this relation,is popularly known as equilibrium superelevation. It has been experienced,all over the world,that different trains pass over the curve with different speeds.It is therefore obvious that superelevation provided for a particular speed would not suit any other speed.A little consideration will show,that as the superelevation increases with the square of the speed,therefore at higher speeds there is a tendency for the train to overturn.similarly,at lower speeds,there is a tendency for the train to derail.
It will be interesting to know,that there are so many theories prevalent for calculation of superelevation all over the world.In most of the countries(including India) superelevation is provided in such a way that the faster trains may run safely without the danger of overturning or discomfort to the passengers due to insufficient superelevation. And at the same time,the slower trains may also travel safely without the danger of derailment due to excessive superelevation. These days,the superelevation is,usually,provided for equilibrium speed or weighted average speed under average conditions.
It will be interesting to know,that there are so many theories prevalent for calculation of superelevation all over the world.In most of the countries(including India) superelevation is provided in such a way that the faster trains may run safely without the danger of overturning or discomfort to the passengers due to insufficient superelevation. And at the same time,the slower trains may also travel safely without the danger of derailment due to excessive superelevation. These days,the superelevation is,usually,provided for equilibrium speed or weighted average speed under average conditions.
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