PROJECTS

Design of a prestressed concrete bridge over the spillway of Omkareshwar Dam. A total of 23 spans require bridge decking viz. from pier P4 to P27. These superstructures are proposed to be constructed with two different techniques because of site and time constraints. The first 7 spans, from pier P4 to P11, will comprise cast-in-situ post-tensioned girder slab superstructure, and the last 16 spans, from pier P11 to P27, will comprise precast pre-tensioned girders in association with cast-in-situ deck slab. The bridge deck shall be provided with 75mm thick fiber reinforced concrete (M-35 grade) wearing course suitably bonded with the deck concrete. As per site specific response spectra, which also considers the dynamic behaviour of the dam, seismic coefficient isa high as 0.43 x G. Consequently metallic pin and guide bearings have been provided to withstand the lateral forces.

Structural design consultancy for Wazirabad approaches flyovers located on the western and eastern bank of Yamuna River, Delhi which involves nearly 50000 sqm of open portion of elevated flyover, 25000 sqm of closed portion of viaduct , 90000 sqm of embankment. It is proposed to adopt precast segmentally constructed, four span continuous curved box girder of 164.5m length as a standard continuous unit. However the length & nos. of spans in a continuous unit will be varied depending on site constraints. Wide precast superstructure deck will be further split into a spine box girders & side frame cantilevers. Cantilever construction or span by span construction method using launching girder will be employed.

Detailed design consultancy of the flyover interchange at Mukarba Chowk, a complex junction of various movement in all directions, that lies at the intersection of the most prestigious Grand Trunk Karnal Road (NH1) and Outer ring Road, the ‘spine’ of peripheral Delhi.

This bridge (Bridge no. 7) is a part of the Port connectivity Link being developed by NHAI connecting various islands with NH-17. M/s SUNCON- SOMA Enterprise Ltd. JV is involved in execution of the above work on the basis of total designs provided by NHAI. The structural system consists of simply supported spans resting on very deep pile foundations. The superstructure has been re-engineered to make it construction friendly and so use of precast/cast in situ post tensioned girders with in situ slab has been made. In some places the girders shall be precast in parts and spliced to together with the aid of prestressing to facilitate transportation and handling of the girders in the creek.