Abstract
Bearing capacity of pile depends mainly on the type of soil through which it rests and on the method of installation. Many empirical and analytical formulae developed based on the field and laboratory experiments to estimate the pile group bearing capacity. The present investigation is carried out to get the load-settlement characteristics of different configurations of pile groups, such as 1 × 1, 2 × 2 and 3 × 3. In many projects, some of the manufactured piles are loaded to determine the pile bearing capacity. This is the most reliable way to determine the pile capacity. However, it is not easy to determine the point where the pile has reached its ultimate capacity on the load-settlement curve. By using different graphical methods, the ultimate bearing capacity is calculated from load-settlement data. Among these methods, there are considerable differences between the graphical ultimate bearing capacities of the piles which decrease to 35% for the piles loaded up to the collapse load and increases up to 120% for the piles loaded to the failure load. Improvement ratio and settlement ratio are calculated using load-settlement curves. Model plate load test is used to determine the load-settlement curves. It is time and cost efficient, easy to perform and reliable. Experiments are conducted on dry, clean and poorly graded sand. Steel pipe piles of length 30 cm, diameter 2 cm, 2.5 cm are used in this experiment. The spacing between the piles is taken as 3d.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Hirany, A., Kulhawy, F.H.: Conduct and interpretation of load tests on drilled shaft foundations. J. Geotech. Geoenviron. Eng. 121(5) (1988)
Hansen, J.B.: Discussion of hyperbolic stress-strain response in cohesive soils. J. SMFD 89(4), 241–242 (1963). https://doi.org/10.21660/2016.19.20111
Chin, F.K.: Estimation of the ultimate load of piles not carried to failure. Proc. Second Southeast Asian Conf. Soil Eng. Singapore 1, 81–90 (1970)
Fuller, F.M., Hoy, H.E.: Pile load tests including quick-load test method conventional methods and interpretations. HRB 333, 78–86 (1970)
Brinch Hansen, J.: Discussion of hyperbolic stress-strain response: cohesive Soil. by Robert L. Kondner. J. Soil Mech. Found. Div. ASCE 89(4), 241–242 (1963)
Davisson, M. T.: High capacity piles. Proc. innovations in found. Const. 52, (1972)
Deb, P., Pal, S. K.: Load-settlement and load-sharing behaviour of a piled raft foundation resting on layered soils. Acta Geotech. Slov. 17(1), 71–86 (2020)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Ghanta, N.S., Pal, S.K. (2021). Interpretation of Load-Settlement Curves from Graphical Methods. In: Patel, S., Solanki, C.H., Reddy, K.R., Shukla, S.K. (eds) Proceedings of the Indian Geotechnical Conference 2019. Lecture Notes in Civil Engineering, vol 133. Springer, Singapore. https://doi.org/10.1007/978-981-33-6346-5_36
Download citation
DOI: https://doi.org/10.1007/978-981-33-6346-5_36
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-33-6345-8
Online ISBN: 978-981-33-6346-5
eBook Packages: EngineeringEngineering (R0)