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| Image Source: Internet |
New Delhi, India (Metro Rail Today): The Delhi-Meerut Rapid Transit System (RRTS) Corridor will not only pass through the median of Delhi-Meerut road but will also pass over rivers, bridges, rail crossing, metro corridors, expressways etc. The project will witness the use of special spans to bridge over gaps wherever the corridor has to cross over existing structures or natural features. Its 82 km long corridor.
National Capital Region Transport Corporation (NCRTC) is constructing India's first RRTS corridor and out of 82 km a total of 72 km stretch of the corridor is elevated.
A NCRTC spokesperson said,
To construct the elevated viaduct of the RRTS corridor, the corporation was erecting piers (Pillars) at an average distance of approximately 34 meters. However, maintaining this distance between piers is not practically possible in some complex areas where the corridor is set to cross over river crossings, metro corridors, expressways, or other such existing public infrastructures. This is where the 'special spans', which are mammoth civil structures with beams made of structural steel, come in in the picture. Two such special spans are coming between Sahibabad and Ghaziabad, with customized shape, elevation, design, and weight, he said. One of the spans is being set up at Vasundhara, which is 73 metres long and weighs 850 tonnes, to cross NCRTC is taking all measures to ensure the services of Indian Railways running below are not affected and the construction work is completed on time
The Delhi Metro Rail Corporation (DMRC) has used such concrete and steel spans at locations where constructing a pillar to support the viaduct has not been possible.
The spokesperson added further,
NCRTC is building special spans at a factory which are then transported to the sites on trailers during the night to avoid any bunch up of traffic and assembled in a systematic way with the help of specialised cranes. The size and structure of these steel spans are designed aesthetically in advance, in line with the overall requirements of construction, installation and usage.
NCRTC team is working day and night at the sites with 17 launching gantries (Tarini) in operation for the elevated section in the corridor. The construction work for the underground stations has also started. The priority section of 17 km between Sahibabad to Duhai in Uttar Pradesh is targeted to be commissioned by March 2023 and the full corridor by 2025.
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