Full Paper View

 

Structural Design of Raft Foundation - A Case Study of Lucknow Region in Uttar Pradesh, India

Devesh Ojha, Prof. (Dr.) Rajendra Kr. Srivastava
Case Study | Journal Paper
Volume 1 , Issue 2 , PP 1-22

Abstract

In this age of rapid growth in population in India, there is a scarcity of land in prime locations especially in metro cities of the country. So, to overcome this problem we are moving towards vertical constriction (that is towards high-rise buildings). The main problem in moving towards vertical construction is the foundation system, if the foundation system in high rise buildings is not planned and designed smartly and economically then there are different problems related to the foundation system that is going to arise, the soil in that area also plays a very important role in designing of the economical and stable foundation system. It is always beneficial to have a raft foundation on alluvial soil for high-rise buildings. But, however, it is a matter of great concern what foundation will be proposed on such types of natural soils or man-made refills. In this paper, an attempt has been made to design a raft foundation based on its geotechnical analysis. An extensive survey of research works devoted to studying the geotechnical parameters affecting the behavior of raft foundations is carried out with detailed experiments raft foundations are increasingly being recognized as an economical and effective foundation system for high-rise buildings. This paper sets out some principles of design for such foundations, including design for the geotechnical ultimate limit state, the structural ultimate limit state, and the serviceability limit state. Attention will be focused on the improvement in the foundation performance due to the raft being in contact with, and embedded within, the soil.

Key-Words / Index Term

Raft foundation, High rise buildings, Alluvial region

References

  1. M. Das and N. Sivakugan, Principles of foundation engineering, Cengage learning, 2018.
  2. Sharma, P. Kumar, K. Pandit, and S. Lala, “Codal provisions for foundation design on soils and rocks: A review,” in Lecture Notes in Civil Engineering, Singapore: Springer Singapore, 2021, pp. 599–609.
  3. C. Punmia, A. K. Jain, and A. K. Jain, RCC Designs Reinforced Concrete Structures. 2006.
  4. A. Singh and N. Lingeshwaran, “Seismic Study Of G+ 5 RC Framed Structure Supported on Raft Foundation,” International Journal of Civil Engineering and Technology, vol. 8, no. 4, pp. 467–476, 2017.
  5. J. Shah and S. K. Jain, Design example of a six-story building. A Report by IIT Kharagpur-A Case Study. 2009.
  6. A. Hooper, “Raft analysis and design: some practical examples”, The Structural Engineer., vol. 62A, No. 8, 1984, pp. 233-244.
  7. K. Basudhar, A. Das, S. K. Das, A. Dey, K. Deb, and S. De, “Optimal cost design of rigid raft foundation,” in the Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), vol. 7, Bangkok, Thailand, 2006, pp. 39–44.
  8. Abdelrazaq, F. Badelow, S. H. Kim, and Y. H. Park, “Foundation Design the 151 story Incheon Tower in Reclamation Area,” in Proceedings of the Korean Geotechical Society Confer-ence, Korean Geotechnical Society, 2009, pp. 157–171.
  9. Long, P. D., & Vietnam, V. W. (2010). “Piled raft—a cost-effective foundation method for high-rises”. Geotechnical Engineering Journal of the SEAGS & AGSSEA, Vol. 41, No.3, 2010, pp. 1-12.
  10. Al-Kodmany, “Tall buildings, design, and technology: Visions for the twenty-first Century City,” J. Urban Technol., vol. 18, no. 3, pp. 115–140, 2011.
  11. Al-Kodmany, “Placemaking with tall buildings,” URBAN Des. Int., vol. 16, no. 4, pp. 252–269, 2011.
  12. Das and N. Sivakugan, Fundamentals of geotechnical engineering. Cengage Learning. 2016.
  13. Ooi, I. K. Raft foundations for high-rise buildings on the bouldery clay in Singapore (Doctoral dissertation, Nanyang Technological University, School of Civil and Structural Engineering).
  14. Ramamrutham and R. Narayan, Design of Reinforced Concrete Structures (conforming to IS 456): Limit State Method and Working Stress Method. Dhanpat Rai Pub Company, 2011.
  15. Ojha and R. K. Srivastava, “Combined piled-raft foundation a sustainable option for week soil (alluvial soil),” Journal of Mechanical and Construction Engineering (JMCE), vol. 1, no. 1, pp. 1–6, 2021.
  16. Chauhan and R. Banerjee, “Seismic analysis of irregular building on hilly area,” Journal of Mechanical and Construction Engineering (JMCE), vol. 1, no. 1, pp. 1–7, 2021.