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Current Affairs 30th March, 2021: All about Chenab Bridge you need to know

30th March, 2021 Published by: Saloni Bhatia Updated Tue, 30 Mar 2021 01:35 PM IST
Source: Amar ujala
The Chenab Bridge is a railway bridge that is currently being built in the Bakkal and Kauri areas of Jammu and Kashmir's Reasi district. Northern Railways is funding the project.

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The bottom ends of the arch were linked on March 17, 2021, and the bridge is scheduled to open in December 2021, according to the announcement.
It will be the world's highest rail bridge when it is completed, spanning the entire length of the Chenab River at a height of 359 m (1,178 ft) above the river.

Details about the Chenab Bridge

The Northern Railways took on the project of building a new railway line between Udhampur in Jammu and Baramulla on the northwestern edge of the Kashmir Valley in Jammu and Kashmir. In 2002, this project was classified as a national project.
The construction of a large number of runners – a total of 63 km – in the rough and mountainous terrain of the Himalayas is a difficult aspect of this project.

Design of the Chenab Bridge

The Chenab Bridge was determined to be a wide-span single steel arch bridge with approach viaducts on Arthur Lane.
To help manage wind-induced forces on the bridge, the chords of the trusses are sealed steel boxes that are internally stiffened and filled with concrete. Another benefit of concrete filling is that it eliminates the need for interior decoration.
The use of continuous construction has reduced the number of bearings, especially on the approach viaduct. This is helpful because it decreases maintenance and inspection efforts while also enhancing riding quality. Concrete piers support the viaduct, while steel piers support the arch.
Fatigue, global stability, second-order impacts, composite action, and other factors must all be taken into account when designing large arch rail bridges.
For the long spans of the Chenab Bridge, Indian construction standards such as the Indian Railway Standards (IRS), the Indian Road Congress (IRC), and the Indian Standards (IS) were found to be insufficient.

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