Granular Pile Anchors For Soft Soils

O. Eswara Reddy*, Madhav.M.R**, Saibaba Reddy.E***, Vidyaranya Bandi****
* Associate Professor, Department of Civil Engineering, SreeVidyanikethan Engineering College, Tirupati, India.
** Professor Emeritus, Jawaharlal Nehru Technological University, Hyderabad, India.
*** Professor, Jawaharlal Nehru Technological University, Hyderabad, India.
**** Engineering Manager, Larsen and Toubro, Mumbai, India.
Periodicity:June - August'2014


Soft soils need to be improved to make them suitable for construction. Granular Piles (GP) are effective and economical solutions to improve the behavior of the soft soil by increasing bearing capacity, reducing settlements due to reinforcement. Granular piles due to their inherent advantage are effective in countering swell pressures from expansive clays. Installation process of GPs densifies the ground adjacent to GPs inducing additional benefit. Advantages of GP to resist compressive and shear loads are well documented and attempts to extend its utility to resist tensile loads is being investigated. An anchor is placed at the base of granular pile and attached to the footing by a cable or rod which transfers applied pullout force to the bottom of GP. Such an assembly is termed as 'Granular Pile Anchor' (GPA). Experimental study on laboratory models of GPA in clayey sand for different compaction properties lead to different undrained shear strength and stress – strain characteristics. Pullout resistance derived from pile capacity is mainly affected due to the variation in undrained shear strength with depth. Results are presented as variations of load – displacement responses and failure patterns for three different undrained shear strength values.


Granular Pile Anchor, Pullout, Granular Pile, Displacements, Undrained Shear Strength.

How to Cite this Article?

Reddy,E.O., Madhav.M.R., Reddy,S.E., and Bandi,V. (2014). Granular Pile Anchors For Soft Soils. i-manager’s Journal on Civil Engineering, 4(3),15-24


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