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For India's Bullet Train, First Box Girder Erected To Speed Up Project

Bullet Practice Venture: The peak of the piers is 13.4 metres from the bottom degree

The primary full-span pre-stressed concrete (PSC) field girder spanning 40 metres was erected in a casting yard within the Navsari district of Gujarat, right now, on the upcoming high-speed bullet practice hall between Mumbai and Ahmedabad.

The Nationwide Excessive Pace Rail Company Restricted (NHSRCL) – answerable for the event, execution, and upkeep of the bullet practice challenge, mentioned in an announcement right now that the 40 metre full span field girder weighing round 970 MT, involving 42 MT of metal was forged in a single piece – with none building joint on November 1, 2021.
 

It’s also the heaviest pre-stressed concrete field girder within the nation’s building business. To hurry up the development of viaduct for the nation’s first bullet practice hall between Mumbai and Ahmedabad, NHSRCL is adopting the total span launching technique.

Infrastructure conglomerate Larsen & Toubro’s constructed tools was used to launch the girder – which has designed utilizing state-of-the-art finite component evaluation software program. The machines are checked for numerous essential loading instances and optimized utilizing mixtures of various materials grades to make sure lengthy and environment friendly operation, at a minimal working value, mentioned L&T in its assertion right now.

The precast girder was picked up from the stacking yard by the straddle provider and was moved to the predefined location from the place it was lifted by the bridge gantry for last erection. The erection marks an necessary milestone in the direction of finishing the Surat-Billimora stretch of the challenge, mentioned L&T. The complete span girder was then positioned between the pier ‘P11’ and ‘P12’ of the high-speed rail hall. The peak of the piers is 13.4 metres from the bottom degree, based on NHSRCL.

To expedite the development of the viaduct, the event of the substructure and superstructure have been taken up in parallel. The work of substructure – pile, pile cap, pier and pier cap, is in progress. For the development of the superstructure – casting yards have been developed alongside the alignment to forged the total span girders and the segmental girders.

23 casting yards are being developed alongside the alignment for casting of the total span girders of 30, 35 and 40 metres. Every casting yard is unfold in an space of 16-93 acres as per the requirement and is positioned close to the high-speed rail alignment.

Amenities comparable to jigs for making rebar cage, casting beds with hydraulically operated pre-fabricated moulds, batching crops, mixture stacking space, cement silos, and labour camps have been developed in every casting yard for dashing up the casting of girders.

The 508 km lengthy Mumbai-Ahmedabad bullet practice hall will cowl 12 stations alongside its route and scale back the journey time between the 2 main cities to 2 hours and 57 minutes, together with halts in any respect stations. As soon as prepared for providers, the high-speed rail will function at a velocity of 320 km per hour and will probably be much like Shinkansen or the Japan bullet practice.

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