Enhancing the Structural Analysis of Rc Piled - Raft Foundation by Actual Behaviour of Supporting Piles

Al-Zuhairi, Alaa H.; Abdualrahman, Safaa Q.; Hanoon, Ammar N.; Abdulhameed, A.; Taj, Ali I.; Al Zand, Ahmed W.

doi:10.2478/cee-2022-0062

Abstract

This paper presents a numerical analysis of the piled-raft foundation (PRF) based on the actual behavior of supporting piles. The raft was modeled as a thin plate, while the piles were modeled as springs in different ways. This research also aims to propose an analytical model of piles based on actual behavior at fieldwork. The results proved that the structural behavior of raft member can be improved through utilizing the actual behavior of supporting piles. When the piles were modeled as non-linear stiffness springs, settlements and bending stresses of raft foundation were reduce marginally as compared with those obtained from piles with linear stiffness springs.

References

[1] SIVAPRIYA, S. V. - BALAMURUKAN, R. - VIGNESHWAR, A. J. - DEVI, N. P. - SHRINIDHI, A.: Effect of Eccentricity in Sandy Slope of Laterally Loaded Single Pile. Civil and Environmental Engineering, Vol. 15, Iss. 2, 2019, pp. 92-100, https://doi.org/10.2478/cee-2019-0013.
Search in Google Scholar Back to article
[2] SEDIN, V. - BIKUS, K. - KOVBA, V. - KONONOV, D. - ZAHILSKYI, V.: Influence of the Static Loading of a Raft Unconnected to a Pile on the Pile Displacements Tested in Field Conditions. Civil and Environmental Engineering Reports, Vol. 29, No. 2, 2019, pp. 22-30, https://doi.org/10.2478/ceer-2019-0013.
Search in Google Scholar Back to article
[3] PATIL, J. D. - VASANVALA, S. A. – SOLANKI, C. H.: A study on piled raft foundation: state of art. International Journal of Engineering Research and Technology, Vol. 2, Iss. 8, 2013, pp. 1464-1470.
Search in Google Scholar Back to article
[4] POULOS, H. G. – GRAHAME, B.: Foundation design for the Burj Dubai – the world’s tallest building. 6th International Conference on Case Histories in Geotechnical Engineering, 2008, 16 p.
Search in Google Scholar Back to article
[5] MALI, S. - SINGH, B.: 3D Numerical Modeling of Large Piled-Raft Foundation on Clayey Soils for Different Loadings and Pile-Raft Configurations. Studia Geotechnica et Mechanica, Vol. 42, No. 1, 2020, pp.1-17, https://doi.org/10.2478/sgem-2019-0026.
Search in Google Scholar Back to article
[6] RAUT, J. M. et al.: Simplified design method for piled raft foundations. Advances in soil dynamics and foundation engineering, 2014, pp. 462-471, http://dx.doi.org/10.1061/40601(256)32.10.1061/40601(256)32
Search in Google Scholar Back to article
[7] SAWWAF, E. – MOSTAFA: Experimental study of eccentrically loaded raft with connected and unconnected short piles. Journal of geotechnical and geoenvironmental engineering, Vol. 136, Iss. 10, 2010, pp. 1394-1402, https://doi.org/10.1061/(ASCE)GT.1943-5606.0000341.
Search in Google Scholar Back to article
[8] POULOS, H. G.: Piled raft foundations: design and applications. Geotechnique, Vol. 51, Iss. 2, 2001, pp. 95-113, http://dx.doi.org/10.1680/geot.2001.51.2.95.10.1680/geot.2001.51.2.95
Search in Google Scholar Back to article
[9] DANNO, KOICHIRO - MAKOTO KIMURA: Evaluation of long-term displacements of pile foundation using coupled FEM and centrifuge model test. Soils and Foundations, Vol. 49, No. 6, 2009, pp. 941-958.10.3208/sandf.49.941
Search in Google Scholar Back to article
[10] POULOS, H. G.: Comparison of some methods for analysis of piled rafts. 14th International Conference on Soil Mechanics and Foundation Engineering, Vol. 2, 1997, pp. 1119-1124.
Search in Google Scholar Back to article
[11] CLANCY, P. A.: Analysis and design of piles raft foundations. Int. J. NAM Geomechs, 1993.
Search in Google Scholar Back to article
[12] POULOS, H. G.: An approximate numerical analysis of pile–raft interaction. International Journal for numerical and analytical methods in geomechanics, Vol. 18, Iss. 2, 1994, pp. 73-92, https://doi.org/10.1002/nag.1610180202.
Search in Google Scholar Back to article
[13] Al-ZUHAIRI, A. H. - MAHDI, H. A – JAWAD, S. M.: Prediction of smear effect on the bearing capacity of driven piles. Journal of engineering, Vol. 18, Iss. 10, 2012, pp. 1169-1178.
Search in Google Scholar Back to article
[14] YAMASHITA, K.: Settlement behaviour of a five-story building on a piled raft foundation. Takenaka technical research report, Vol. 49, 1994, pp. 61-68.
Search in Google Scholar Back to article
[15] MOSSALLAMY, E. et al.: Innovative application of piled raft foundation to optimize the design of high-rise buildings and bridge foundations. 10th International Conference on piling and deep foundations DFI/EFFC, 2006, pp. 347-358.
Search in Google Scholar Back to article
[16] YAMASHITA, K. – TAKESHI, Y. – MASAAKI, K.: Simplified method for analyzing piled raft foundations. Deep foundations on bored and auger piles, CRC Press, 2020, pp. 457-464.10.1201/9781003078517-64
Search in Google Scholar Back to article
[17] SMALL, J. C. – POULOS, H. G.: Non-linear analysis of piled raft foundations. Contemporary Issues in deep foundations, 2007, pp. 1-9, https://doi.org/10.1061/40902(221)14.
Search in Google Scholar Back to article
[18] RUSSO, G.: Numerical analysis of piled rafts. International journal for numerical and analytical methods in geomechanics, Vol. 22, Iss. 6, 1998, pp. 477-493, https://doi.org/10.1002/(SICI)1096-9853(199806)22:6%3C477::AID-NAG931%3E3.0.CO;2-H.
Search in Google Scholar Back to article
[19] CHIN, F. K.: Estimation of the ultimate load of piles from tests not carried to failure. The 2nd Southeast Asian Conference on Soil Engineering, 1970.
Search in Google Scholar Back to article
[20] De SANCTIs, L.M.: Communication of paper submitted for publication, 2001.
Search in Google Scholar Back to article
[21] IMPE, P. D.: Methods of analysis of piles raft foundation. International society of soil mechanics and geotechnical engineering, 2001.
Search in Google Scholar Back to article
[22] ASTM D1143-07: Standard test method for piles under static axial compressive load, 2013.
Search in Google Scholar Back to article

Enhancing the Structural Analysis of Rc Piled - Raft Foundation by Actual Behaviour of Supporting Piles

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