| Title |
Shaft Group Efficiency of Friction Pile Groups in Deep Soft Clay |
| Authors |
백진열(Paek, Jin-Yeol) ; 조재연(Cho, Jae-Yeon) ; 정상섬(Jeong, Sang-Seom) ; 황택진(Hwang, Taik-Jean) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.2C.049 |
| Keywords |
주면하중전이거동;f-w 곡선;주면 무리효율;연약지반;유한요소 해석 shear load transfer;f-w curve;group efficiency factor;soft clay;finite element |
| Abstract |
In this study, the behaviors of friction pile groups are investigated using 3D finite element (FE) analysis. The emphasis was quantifying on the shear load transfer (f-w) characteristics of pile groups and the shaft group effects. A framework for determining the f-w curve is proposed based on both theoretical analysis and field load test database. Through comparisons with case histories and FE results, it is shown that the proposed f-w curve is capable of predicting the behavior of a friction pile in deep soft clay. Additionally, a numerical analysis that takes into account the group efficiency factors were performed for major parameter on group pile-soil interaction, such as the pile spacing, pile arrangement, soil condition, and location of pile cap. Based on these results, the shaft group efficiency factors were also proposed. |