Jns stadium, Delhi.

Structural analysis of tensile roof system at Jawaharlal nehru stadium, Delhi.

1. Jawaharlal nehru stadium, delhi . TENSILE ROOF

2. JAWAHARLAL NEHRU STADIUM, DELHI CAPACITY - 60 000 COUNTRY - India CITY - New Delhi CLUBS - D elhi Dynamos FC INAUGURATION - 1982 RENOVATIONS - 2007-2010 DESIGN - GMP Architekten , Schlaich , Bergemann und Partner (2007-2010 ) COST - 50 mln € (2007-2010)

3. Before renovation in 2008 Before renovation Jawaharlal Nehru Stadium originally opened in 1982 and was recently upgraded to meet international standards to host the XIX Commonwealth Games, held October 3 – 14, 2010. The facility will serve as the site of the opening and closing ceremonies as well as athletic events. The refurbished stadium also features a high-definition television system, state-of-the-art lighting and an underground tunnel that runs the length of the stadium.  The roof was completed in summer 2010. In addition to TMC and Birdair , the project team also consists of the Government of India, engineer Schlaich Bergerman and Partners (Germany), architect GMP (Germany), and local General Contractor Shapoorji Pallonji & Co Ltd. Cables were supplied by Pfeifer Seil - und Hebetechnik GmbH and heavy lift equipment was provided by VSL International Ltd. 

4. PLAN OF STADIUM COMPLEX As part of this, the seating capacity was reduced to 60,000. The owner of the stadium also decided to install a 53,800m2 membrane roof with a roof depth of 70m. An elliptical steel structure 930m in circumference was installed around the stadium to hold the two compression rings for the new membrane roof. The first step of the operation involved lifting the cable-net structure to the level of the lower compression ring. During this stage, the lower radial cables were temporarily connected to the upper radial cables. The lower radial cables were then permanently fixed to the lower compression ring by pulling the cable heads with chain hoists. During the next step the cable-net structure was raised until the radial cables of the 24 main axes could be fixed by pinning to the upper compression ring. The SLU-120 strand jacks were then moved onto the secondary axes to replace the smaller equipment.

5. An elliptical steel structure 930m in circumference and 45m high was installed around the stadium to hold the compression rings for the new roof. The cable-net structure consists of two compression rings and one tensioning ring. The cable-net structure was lifted using only the upper radial cables. PROCESS OF CONSTRUCTION

6. Two circumferential basket like supporting colonnade structures independently carry the compression rings as well as the complete ramp system for access and emergency evacuation. Ridge and valley radial cables alternate and create the link to the inner tension ring. Membrane panels span between the upper ridge and the lower valley cable and result in a beautiful lotus like folded plate cladding arrangement.  IT IS one of the largest membrane roof system in the world. ROOF DETAILS

7. DETAILS WATER DRAINAGE VIA MEMBRANE PLATES

8. SPECIALIZED HARDWARE SOLAR BEHAVIOUR SECTION

9. CONSTRUCTION PHASE

10. DETAILS

11. PRESENTATION BY HARSHADA B. SHREYA S. SUBHASHINI R. TEJAS D. MRUNMAI G. PRATHMESH M. THANK YOU!