Page 44 - CO April 2017 Full Issue

interaction COVER STORY Powered by Chandni Chowk Railway Station - Delhi Metro Casting yard Hyderabad Metro enough to bear the weight of a city’s completion of these complicated structures mechanical devices to digital technologies. heavy trafc which calls for strong, frm along the metro corridors. In fact, except for Digitalisation is about working with foundations and L&T’s geotechnical arm laying of foundations and erection of pillars tools and practices based on information ofers engineering solutions to the entire which are both in-situ processes, over 85 and communication technology that gamut of geotechnical and foundation per cent of the works are precast! For the improves productivity. Areas of focus engineering for metro systems. Trench Hyderabad Metro, precasting is one of the for Digitalisation in L&T are P&M cutter equipment was introduced in India construction methods that has been used to Monitoring, Project Monitoring & Control, by L&T for underground stations involving standardise quality and accelerate speed of Safety, Engineering & Design, Customer rock socketing and permanent diaphragm construction. Interactions, Employee Involvement / walls. We have installed India’s frst secant Te underground metro comprises tunnels Engagement and Procurement. pile wall for the Delhi Metro Rail project and stations: Tunneling is done by Tunnel at Hauz Khas. Deploying a large feet of Boring Machines (TBM) or by NATM Power of BIM: L&T has implemented state-of-the-art Plant & Machinery, L&T (New Austrian Tunneling Method). Te Building Information Modelling (BIM) propels progress from the initial stages of selection of the tunneling method depends in Hyderabad Metro (3D) and now are foundation to completion. on the ground conditions, surface features in the process of implementing 5D BIM As pioneers of precast technology in India, and dimensions of the tunnel. Based on the in Mumbai. We have a competent BIM L&T has been using this technology aptly constraints and location, the stations can be Team that enhances value to the customer in the metro segment. Starting from simple constructed using: by increasing productivity, decreasing cost precast segments that are tied together to • Top Down Method with diaphragm by avoiding rework, facilitating seamless form a full span of the metro portals, an walls interface and system integration. entire span is now being cast as a single piece • Bottom Up Method with Soldier to fast track project completion. Called ‘U’ pile/Sheet pile / Secant pile Future outlook for the industry and from girders, these trough-like heavy concrete • Combined Top Down and Bottom a company perspective. structures are cast at a dedicated yard under Up Methods (Diaphragm walling India has an operational metro rail network standard factory conditions and then shifed with shear pins) of about 300 km, 90 per cent of this network to the site where they are merely lifed and A cost effective technique for erecting has come up across four cities in the last 10 placed into position using a combination of Over Track Exhausts (OTE) segment was years. Rapid urbanisation will drive demand heavy duty cranes. L&T has taken precast proposed and executed at the Chennai for more and more metro rail systems in technology to a new level by constructing Metro that achieved an excellent erection Tier 1 and Tier 2 cities. With our inherent even station buildings using this innovative speed of 10 OTEs/day. capabilities, talent, experience and growing technology. Te concourse and platforms track record, we are well positioned to ride are now precast and erected in place at Digitalisation: The Digital Revolution this metro wave by providing the most the station buildings thereby fast-tracking marks the movement from analog and optimal solutions. u Lucknow Metro Chennai Metro Depot 46 construction opportunities|aPrIL 2017