First Cable-Stayed Rail Bridge Is Ready: Railway Minister
Union Railway Minister Ashwini Vaishnaw uploaded a timelapse video of the construction of the Anji Khad bridge, which is now operational. With 96 cables, this is India’s first cable-stayed train bridge. The overall length of the cable strands is 653 km. The video was posted with the comment, “In 11 months, India’s first cable-stayed rail bridge will be ready.”
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The bridge is being built in the Reasi district of Jammu and Kashmir as part of Indian Railways’ most difficult Udampur-Srinagar-Baramulla-Rail Link (USBRL) Project. The bridge is approximately 80 km from Jammu.
The Anji Khad Bridge, which connects Katra and Reasi in Jammu and Kashmir, is the country’s “first cable-stayed bridge” on Indian Railways. The bridge is part of the Udhampur-Srinagar-Baramulla Rail Link (USBRL) Project, a national endeavour.
The bridge is located amid the Himalayas’ young fold mountains, which contain exceedingly complex, delicate, and frightening geological characteristics in the form of faults, folds, and thrusts, in addition to the region’s seismic proneness. IIT Roorkee and IIT Delhi conducted detailed site-specific investigations.
The bridge is being built in the Reasi district of Jammu and Kashmir as part of Indian Railways’ most difficult Udampur-Srinagar-Baramulla-Rail Link (USBRL) Project.The bridge is approximately 80 km from Jammu.
Due to space constraints, the slopes of the mountain supporting one foundation of the main span have been stabilised by a special hybrid foundation on the Katra end. The main pylon with a 40-metre-deep hybrid base, the central embankment, and the ancillary viaduct were all built on the Srinagar end of the bridge.
The bridge’s entire length is 725.5 metres. Given the ease of construction and typical site conditions, the bridge was divided into four sections: a 120-meter-long approach viaduct on the Reasi side, a 38-meter-long approach bridge on the Katra end (CA2), the main bridge (473.25-meter-long cable-stayed portion), and the central embankment (94.25-meter-long).
The main Anji bridge is a cable-stayed structure with a total length of 473.25 m and a main span of 290 m. The Anji Khad Bridge joins tunnels T2 and T3 of the Udhampur-Srinagar-Baramulla Rail Link project’s Katra-Banihal Section.
This First Cable-Stayed Rail Bridge features a single main pylon that stands 331 metres above the river bed and is 193 metres tall from the top of the foundation.
The entire length of the bridge is 725 meters, which includes the main bridge (473.25 metres), an ancillary viaduct (120 metres), an approach bridge (38 metres) on the Katra end, and the centre embankment (94.25 metres).
It is an asymmetrical cable-stayed bridge balanced on a central pylon’s axis. The bridge’s entire deck width is 15 metres.
The Anji Khad Bridge is supported by 96 cables with lengths ranging from 82 to 295 metres. In the main pylon construction, 40-metre-deep micropiles were utilised all around the circumference of the 20-metre hybrid well foundation.
The bridge will carry a single railway line as well as a 3.75-meter-wide service road; there will be a 1.5-meter-wide footpath on each side of the deck, for a total width of 15 metres. The Anji Khad Bridge was built to withstand big storms with high winds. The design wind speed taken into account is 213 kmph.
Various innovative techniques and equipment, such as DOKA Jump-Form Shuttering and Pump Concreting Systems, are being used to increase efficiency, improve worker safety, and reduce construction time by approximately 30%.
A cutting-edge tower crane (imported from Spain) with a capacity of 40 T and an extensible height of up to 205 metres is being utilised to improve building activities at heights of up to 193 metres. The Anji Khad Bridge is equipped with an integrated monitoring system comprised of multiple sensors positioned at various points along the bridge.
The Italian business ITALFERR (a company belonging to the Italian State Railways Group “Ferrovie dello Stato Italiane”) was allocated the contract for Detailed Design and Construction Supervision (DDC) of this landmark bridge, and proof checking was assigned to the company COWI, UK. The design is based on Indy, with assistance from Photo by Eurocodes when applicable. The line’s design speed is 100 km/h, which poses no concerns for train-structure interaction.
The Department of Earthquake Engineering at the Indian Institute of Technology, Roorkee, conducted site-specific earthquake parameter analyses to describe the region’s seismo-tectonic framework.Because of the bridge’s importance, a vast number of sensors will be installed on it to monitor its structural integrity.
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