They were trying to compare
high capacity Padma Bridge railway with low capacity lines in a minor Indian state.
You mean something like this????
https://timesofindia.indiatimes.com...ge-to-begin-in-march/articleshow/57172147.cms
Work on Bidupur-Dargah bridge to begin in March
TNN | Feb 16, 2017, 11:26 IST
PATNA:
The actual construction of piers (pillars) on the six-lane Kachchi Dargah-Bidupur bridge over the Ganga is expected to commence from March 10.
The ADB entered into an agreement with the government of India on November 15 last year for extending a loan of USD 500 million (Rs 3,000 crore) for the ambitious bridge project in Bihar.
"Work will soon begin on a new piece of infrastructure that will help fill the urgent need for bridge connections in Bihar. The new Ganga bridge, supported by ADB,
will be built 10km downstream and east of the capital Patna and is likely to be India's longest river bridge with a length of almost 10km," said a blog on the ADB website by Saleha Waseem, operations communications specialist of South Asia regional department in the ADB.
CM Nitish Kumar commissioned the construction work of the bridge in presence of RJD chief Lalu Prasad and his sons Tej Pratap Yadav and
Tejashwi Prasad Yadav on January 31 last year.
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Or something like this????
https://timesofindia.indiatimes.com...ngest-railway-bridge/articleshow/51074696.cms
Katni to have India's longest railway bridge
Bhopal:
Katni in Madhya Pradesh will have India's longest railway bridge, 14 km on the up line, almost three and half times longer than Vembanad rail bridge in Kerala that connects Edappally and Vallarpadam in Kochi and is 4.62 km long.
Called Katni grade separator, down line of the bridge would be of 7 km. Its total length would be 21 km up and down side.
Project received clearance from Cabinet Committee on Economic Affairs (CCEA) recently along with other railway projects. Design and survey of the bridge has been completed and it will take 5 years for completion.
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Or something like this??
https://www.railway-technology.com/projects/chenab-bridge-jammu-kashmir/
Chenab Bridge, Jammu and Kashmir, India
Chenab Bridge is an under-construction rail bridge, located between Bakkal and Kauri in the Reasi district of Jammu and Kashmir (J&K), India. The 1,315m-long bridge is being built at a height of 359m. Once completed, it will be the tallest rail bridge in the world.
The INR5.12bn ($92m) bridge is a part of
Jammu-Udhampur-Srinagar-Baramulla Rail Line(JUSBRL) project being undertaken by the Ministry of Indian Railways. The bridge will include a 14m-wide dual carriageway and a 1.2m-wide central verge.
The project is expected to be finished by March 2016 and will have a lifespan of 120 years. It will contribute to the economic development of the state and help in providing better transportation accessibility within the state and the country.
Chenab Bridge design details
Chenab Bridge forms a massive steel arch, the first of its kind in India. The country has no codes or design guidance for such massive structures. Based on experiences drawn from similar projects worldwide, the design practices for the bridge are being followed.
BS: 5400 is being used as the basic guideline for the design and construction of the bridge. The deep Chenab river valley under the bridge is prone to high wind pressure risking the stability of the bridge.
Norway-based Force Technology Laboratory conducted several wind tunnel tests to understand the effects of wind speed, static force coefficients and gust buffeting. The bridge is designed to resist wind speeds of up to 260kmph. The seismic nature of the project zone was also considered during its design.
The bridge will include 17 spans, as well as the 469m main arch span across the Chenab River, and viaducts on either side. The main span of the bridge will include two 36m-long approach spans. It will be built as a two ribbed arch with steel trusses made of concrete-filled sealed steel boxes. The structure will be supported by two 130m-long, 100m-high pylons on either end through cables.
Steel was chosen to construct the bridge as it will be more economical and able to resist temperatures of -20C and wind speeds of above 200kmph. The Jammu and Kashmir region witnesses frequent terrorist attacks. To enhance safety and security, the bridge will be made of 63mm-thick special blast-proof steel. The concrete pillars of the bridge are designed to withstand explosions.
A ring of aerial security will be provided to safeguard the bridge. An online monitoring and warning system will be installed on the bridge to protect the passengers and train in critical conditions. Footpaths and cycle trails will be provided adjacent to it. The bridge will be painted with a special corrosion-resistant paint, which lasts for 15 years.
Bridge construction and challenges faced
The bridge is being constructed in one of the most complicated and isolated terrains. One of the biggest challenges involved was construction of the bridge without obstructing the flow of the river. Approach roads, five kilometres in length, were constructed to reach the foundations of the bridge.
The deck of the bridge is partly in straight horizon and partly in curves. It is located on a transition curve with changing radius. Construction is therefore being carried out in stages following the gradual change in the alignment. This is the first time a bridge is being constructed incrementally on a transition curve.
Cable cranes and derrick will be used to construct the bridge. The cable cranes used for the project will be the largest in the world.
Construction of the bridge is expected to require 25,000mt of steel, 4,000mt of reinforced steel, 46,000m³ of concrete and eight million m³ of excavation.
Contractors involved in constructing the Indian bridge
Amberg Engineering was appointed to carry out review work of the alignments. Konkan Railway Corporation is executing the project. Design and construction of the bridge was awarded to a joint venture of Afcons Infrastructure, Ultra Construction & Engineering Company of South Korea and VSL India in 2004.
Finland-based WSP Group and Germany-based Leonhardt Andra and Partners are the consultants for the project. VCE Consult ZT-GmbH designed the pylons of the bridge. Jochum Andreas Seiltransporte installed the cables for the pylon. AkzoNobel was awarded the painting services contract for the bridge.
