Experimenta Lstudy of Behavior of Piled Raft Foundations under Vertical Loading in Sand

Authors

Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Mazandaran, Iran

Abstract

Several numerical studies have been carried out to analyze the behavior of piled raft foundations, but very few experimental studies are reported in literatures. The conventional approach for the design of piled raft foundations ignores the raft load sharing and it has been assumed that the piles carry the whole of structural loads. This approach is unduly conservative and lead to an uneconomic design. Only when the piles cap is elevated from the ground level, this design method is valid. In a piled raft foundation, pile-soil-raft interaction is complicated. The available laboratory studies are mainly focused on steel piles. The present study aimed to evaluate the behavior of piled raft foundations in sand, using experimental physical models.

Keywords

References

شرف ­خواه م، "مطالعه آزمایشگاهی پی­ های گسترده شمعی در ماسه تحت بارگذاری قائم"، پایان­نامه دکتری، دانشگاه صنعتی نوشیروانی بابل، دانشکده مهندسی عمران، 1397.‌
Altaee A, Fellenius BH, “Physical Modeling in Sand”, Canadian Geotechnical Journal, 1994, 31 (3), 420-431.
Bazyar MH, Ghorbani A, Katzenbach R, “Small-Scale Model Test and Three-Dimensional Analysis of Pile-Raft Foundation on Medium-Dense Sand”, International Journal of Civil Engineering, 2009, 7 (3), 170-175.
Cooke RW, “Piled Raft Foundation on Stiff Clays-a Contribution to Design philosophy”, Geotechnique, 1986, 36 (2), 169-203.
Comodromos EM, Papadopoulou MC, Laloui L, “Contribution to the Design Methodologies of Piled Raft Foundations under Combined Loadings”, Canadian Geotechnical Journal, 2016, 53 (4), 559-577.
El-Garhy B, Galil AA, Youssef A, Raia MA, “Behavior of Raft on Settlement Reducing Piles: Experimental Model Study”, Journal of Rock Mechanics and Geotechnical Engineering, 2013, 5 (5), 389-399.
EI Sawwaf M, “Experimental Study of Eccentrically Loaded Raft with Connected and Unconnected Short Piles”, Journal of Geotechnical and Geoenvironmental Engineering, 2010, 136 (10), 1394-1402.
Fioravante V, Giretti D, “Contact versus Noncontact Piled Raft Foundations”, Canadian Geotechnical Journal, 2010, 47(11), 1271-1287.
Hemsley JA, “Design applications of raft foundations”, Thomas Telford Ltd, 2000.
Huangab M, Jiu Y, Jiang J, Lie B, “Nonlinear Analysis of Flexible Piled Raft Foundations subjected to Vertical Loads in Layered Soils”, Soils and Foundations, 2017, 57 (4), 632-644.
Khanmohammadi M Fakharian K, “Evaluation of Performance of Piled-Raft Foundations on Soft Clay: A Case Study”, Geomechanics and Engineering, 2018, 14 (1), 43-50.
Lee SH, Chung CK, “An Experimental Study of the Interaction of Vertically Loaded Pile Groups in Sand”, Canadian Geotechnical Journal, 2005, 42 (5), 1485-1493.
Oh EYN, Huang M, Surarak C, Adamec R, Balasurbamaniam AS, “Finite Element Modeling for Piled Raft Foundation in Sand”, Eleventh East Asia-Pacific Conference on Structure Engineering & Construction, TAIWAN, 19-21, 2008.
Patil JD, Vasanwala SA, Solanki CH, “An Experimental Study on behavior of Piled Raft Foundation”, Indian Geotechnical Journal, 2016, 46 (1), 16-24.
Poulos, HG, Davis EH, “Pile Foundation Analysis and Design”, John Wiley & Sons, New York, 1980.
Raut JM, Khadeshwar SR, Bajad SP, Kadu MS, “Simplified Design Method for Piled Raft Foundations”, Advances in Soil Dynamics and Foundation Engineering: 2014, 462-471.
Reul O, Randolph MF, “Design Strategies for Piled Rafts Subjected to Nonuniform Vertical Loading”, Journal of Geotechnical and Geoenvironmental Engineering: 2004, 1-13.
Samanta M, Bhowmik R, “3D Numerical Analysis of Piled Raft Foundation in Stone Column Improved Soft Soil”, International Journal of Geotechnical Engineering, 2014, 9 (1) 101-112.
Sedran G, Stolle DFE, Horvath RG, “An Investigation of Scaling and Dimensional Analysis of Axially Loaded Piles”, Canadian Geotechnical Journal, 2001, 38 (3), 530-541.
Tagaya K, Scott RF, Aboshi H, “Scale Effect in Anchor Pullout Test by Centrifugal Technique”, Soil and Foundations, 1988, 28 (3), 1-12.
Tomlinson MJ, “Pile Design and Construction Practice”, 4nd Edition, E & FNS pon, 2004.
 
Journal of Civil and Environmental Engineering
Volume 51.3, Issue 104 - Serial Number 104
Autumn 2021
October 2021
Pages 87-101

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