Location
St. Louis, Missouri
Date
02 Jun 1993, 9:00 am - 12:00 pm
Abstract
Foundation for the prestigious 235m. Delhi television tower commissioned in 1988 in New Delhi consists of 279 reinforced concrete piles of 500 mm diameter with 1250 KN load carrying capacity. The tower is resting on a circular pile cap 32 m. diameter with an average thickness of 2.5 m. Pile cap was designed assuming full rigid conditions at site. When it was noticed that the pile reinforcement was predominantly anchored to the layers of the pile cap reinforcement, it was apprehended that this arrangement does not ensure complete rigidity as assumed, but it makes it only partially flexible. This paper deals with detailed analysis of same pile cap allowing flexibility for calculating the pile forces and moments under the service loads. It was finally concluded after comparing the results of flexible pile cap thus obtained, with that of rigid pile cap, with respect to pile forces and maximum radial moments with reduced global gust factor of 1.21 that reinforcement and the thickness for the pile cap provided, were O.K. and needed no corrective measures.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
3rd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1993 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Viswanath, H. R., "Rigid vs. Flexible Pile Caps: Case Study for 235 m. Delhi T.V. Tower" (1993). International Conference on Case Histories in Geotechnical Engineering. 51.
https://scholarsmine.mst.edu/icchge/3icchge/3icchge-session01/51
Rigid vs. Flexible Pile Caps: Case Study for 235 m. Delhi T.V. Tower
St. Louis, Missouri
Foundation for the prestigious 235m. Delhi television tower commissioned in 1988 in New Delhi consists of 279 reinforced concrete piles of 500 mm diameter with 1250 KN load carrying capacity. The tower is resting on a circular pile cap 32 m. diameter with an average thickness of 2.5 m. Pile cap was designed assuming full rigid conditions at site. When it was noticed that the pile reinforcement was predominantly anchored to the layers of the pile cap reinforcement, it was apprehended that this arrangement does not ensure complete rigidity as assumed, but it makes it only partially flexible. This paper deals with detailed analysis of same pile cap allowing flexibility for calculating the pile forces and moments under the service loads. It was finally concluded after comparing the results of flexible pile cap thus obtained, with that of rigid pile cap, with respect to pile forces and maximum radial moments with reduced global gust factor of 1.21 that reinforcement and the thickness for the pile cap provided, were O.K. and needed no corrective measures.
