Nov 16
Spanning Speed
Spanning Speed
IN September, the Union Minister for Railways Mr Ashwini Vaishnaw, along with L&T CEO & MD Mr S N Subrahmanyan flagged off a full-span launching equipment for the Mumbai-Ahmedabad High Speed Rail (HSR) project in Tamil Nadu’s Kancheepuram. 
The virtual flag-off ceremony marked a true reflection of aligning L&T with the spirit of Atmanirbhar Bharat”. Mr Satish Agnihotri (MD – National High Speed Rail Corporation Ltd), Mr Miyamoto Shingo (Minister of Economic Section – Embassy of Japan, New Delhi) and Mr S V Desai (L&T’s Whole-Time Director & Sr EVP – Civil Infrastructure) participated in the event.
Considering the scale of laying the 508-km-long rail corridor, the major portion of which is being constructed by L&T, such innovative and state-of-the-art construction techniques and methodologies will speed up the pace of execution. The full-span launch equipment, comprising first-of-their-kind straddle carriers and girder transporters, will move and erect full-span girders as a single piece for the double track. The 40-metre-long girders, weighing 975 MT, will be the heaviest prestressed concrete box girders to be precast and erected in the history of India’s construction industry.
In Mr Subrahmanyan’s words: “Both these equipment have been entirely designed and developed in-house and, most pertinently, customised to the specific requirements of the high-speed rail project that is by far the largest EPC project ever to be awarded in India. There are several challenges to build at such speed and scale, but we are committed to take on this mammoth challenge to deliver India’s first high speed rail project in time and to quality”.
Here are some key technical facets of the full span launching equipment:
• The equipment has been designed using state-of-the-art finite element analysis software by developing full-scale models in-house and by following stringent international codes while maintaining world-class design standards.

• The machines are checked for various critical loading cases and optimised using combinations of different material grades to ensure long and efficient operation, at a minimum operating cost.

• The launching girder machines are suitable for curved tracks and different gradients.

• The machines are equipped with highly mechanised and proven world-class and reliable components and can operate in automatic mode using in-built programme logic.

• There is a provision for remote monitoring through IoT.


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