Winkler springs (p-y curves) for liquefied soil from element tests

Rouholamin, M; Bhattacharya, S; Lombardi, D

Abstract

In practice, piles are most often modelled as "Beams on Non-Linear Winkler Foundation" (also known as “p-y spring” approach) where the soil is idealised as p-y springs. These p-y springs are obtained through semi-empirical approach using element test results of the soil. For liquefied soil, a reduction factor (often termed as p-multiplier approach) is applied on a standard p-y curve for the non-liquefied condition to obtain the p-y curve liquefied soil condition. This paper presents a methodology to obtain p-y curves for liquefied soil based on element testing of liquefied soil considering physically plausible mechanisms. Validation of the proposed p-y curves is carried out through the back analysis of physical model tests.

Citation

Rouholamin, M., Bhattacharya, S., & Lombardi, D. (2014). Winkler springs (p-y curves) for liquefied soil from element tests. In K. Soga, K. Kumar, G. Biscontin, & M. Kuo (Eds.), Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 (951-956). https://doi.org/10.1201/b17395-170

• Conference Name: International Symposium on Geomechanics from Micro and Macro
• Start Date: Sep 1, 2014
• End Date: Sep 3, 2014
• Online Publication Date: Sep 25, 2014
• Publication Date: Aug 26, 2014
• Deposit Date: Feb 10, 2015
• Publicly Available Date: Feb 10, 2015
• Publisher: CRC Press
• Peer Reviewed: Peer Reviewed
• Pages: 951-956
• Book Title: Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
• ISBN: 9781138027077; 9781315737324
• DOI: https://doi.org/10.1201/b17395-170
• Keywords: p-y spring; soil testing; liquefied soil; element testing; piles; Winkler method
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/7539
• Publisher URL: http://dx.doi.org/10.1201/b17395-170