Presentation on

Conceptual Design of Chenab Bridge

Nilesh Bhosale

M.Tech.

Transportation Engg.

Content

Basic information of bridge

The bridge site

Description of bridge

Design of bridge

Construction method

Conclusion

Basic information of bridgeThe Client

KONKAN RAILWAY CORPORATION LTD, India

Location

Crosses Chenab river between Bakkal and Kauri,in Reasidistrict of Jammu and Kashmir

The contractorAfcons Infrastructure Ltd, Mumbai, India

The Official Project Name

Design & Construction of Special Bridges across the RiverChenab at km 50/800 on the Katra-Laole section of theUdhampur-Srinagar-Baramulla Rail Link Project

Bridge Site

Site is located in mountainous region of Jammu Kashmir

All the traffic in the region is running through narrow road network,

which is crowded and dangerous. The bridge is a part of the new

railway connection.

Description of bridge

Deck will carry two railway tracks

Superstructure is a steel girder

Design of Bride

The design speed of the railway was set to be 100 km/h and

the design life had to be 120 years. Fatigue assessment shall

be done as per BS: 5400 Part –10.

Wind loads is derived using physical topographic models of the

site and tests in a wind tunnel laboratory.

The superstructure is a plate girder with a closed deck, where

rails are connected.

The closed deck keeps the rainwater out and provides mostly

dry environment below the deck.

Wind tunnel test

Construction method

Insufficient infrastructure.

Workshop, Paint shop and Electricity generation.

Cable crane (Capacity 40 tonnes)

Steel decks

Derrick crane (Capacity 100 tonnes)

Erection of arch segments

Typical arch erection by derrick crane.

Erection of last span and key segment by cable crane.

Conclusion

The design of the main arch requires consideration of a number of

additional parameters, such as fatigue , stability, composite action,

etc.

The Chenab Bridge will be the biggest / the longest-span / the

highest railway arch bridge ever built in the world.

Its design offered great challenges to the design team.

Thank you