New Delhi, India (Metro Rail Today): On October 28, 2021 The workers of Larsen and Toubro Limited (L&T)started the casting of of the first full span Pre Stressed Concrete (PSC) Box Girder of 40 m span to expedite the construction of viaduct for 508 km Mumbai- Ahmedabad High Speed Rail Corridor in a casting yard in Anand, Gujrat.
PSC Box Girder of 40 m span weighs around 970 MT and will be the heaviest PSC Box Girder in the construction industry of India. The 40 m Span Girder is being cast in a single piece which is without any construction joint, involving 390 cum of Concrete and 42 MT of steel.
The Mumbai- Ahmedabad High Speed Rail Corridor will be 508kmlong and out of 508 km 352 km lies in the state of Gujrat (348 km) and Dadra & Nagar Haveli (4 km) and the rest of 156 km lies in the state of Maharashtra. Out of 352km lies in the state of Maharashtra.
To expedite construction of viaduct, construction of substructure and superstructure has been taken in panel. While the work of substructure which is Pile, Pile Cap, pier and Pier Cap is in process for superstructure, casting yards have been developed along the alignment to cast full span girder and segment girders s that they can be launched using heavily machinery over casted Pier Caps. Most of the Girders will be full span 30, 35 & 40 m, however for location having site constraint, segmental launching of small precast segments will be used.