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http://dx.doi.org/10.7843/kgs.2017.33.12.21

Analysis of Plugging Effect for Large Diameter Steel Pipe Piles Considering Driveability (CEL Method)  

Jeong, Sang-Seom (Dept. of Civil and Environment Engrg., Yonsei Univ.)
Song, Su-Min (Dept. of Civil and Environment Engrg., Yonsei Univ.)
Ko, Jun-Young (Dept. of Civil, Environmental and Construction Engrg., Texas Tech Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.12, 2017 , pp. 21-33 More about this Journal
Abstract
This paper presents the analysis of plugging effect especially when the large diameter steel pipe pile was installed by considering driveability (BPM, blow per meter). The Coupled Eulerian-Lagrangian (CEL) technique was used to simulate the driving of open-ended piles into soil. To consider the driveability, the applied driving energy for each pile was obtained from the analysis results by using the wave equation. The parametric studies were performed for different pile diameters, penetration depths of pile, soil elastic modulus and BPM. It was found that the SPI is almost constant with increasing both the pile diameter and the required driving energy. It is also found that the plugging effect increases with increasing the pile length, resulting in the increase of lateral earth pressure. Based on this study the apparent magnitude and distribution of the lateral earth pressure is proposed for inside portion mobilizing soil plug.
Keywords
Large diameter steel pipe pile; Large deformation FE analysis; Coupled Eulerian-Lagrangian technique; Driveability; Plugging effect; Soil Plugging Index (SPI); Lateral earth pressure coefficient;
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Times Cited By KSCI : 4  (Citation Analysis)
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