NDLI: Application of Advanced Procedures to Model Tests on the Subsoil Behavior Under Vertical Loading of Group Pile in Sand

Content Provider	Springer Nature Link
Author	Towhata, Ikuo Aoyama, Shogo Goto, Shigeru Mao, Wuwei
Copyright Year	2015
Abstract	It is known that bearing behavior of group pile is substantially different from the superposition of the single-pile loading in both clay and sandy grounds when the pile spacing is narrower. However the mechanism which causes the difference, called soil–pile–soil interaction, is less known in sand than in clay. This is because the sandy ground that bears the group pile has not been investigated well in previous studies. In order to obtain more direct information on the subsoil behavior, several advanced procedures including visualizing test and image analysis (PIV) and tactile sensors were adopted to discuss the behavior of the ground in this study. The clear difference of the ground deformation between wider and narrower spacing of piles in the group pile exists only before the bearing load yielded as revealed from visualizing test and PIV. It corresponded to the lower secant modulus of the tip resistance in narrower-spacing group pile at the same stage. After the ground yielding, the bearing behavior does not show significant difference among the piles. The bearing mechanism after yielding was investigated by PIV as well.
Starting Page	64
Ending Page	76
Page Count	13
File Format	PDF
ISSN	09719555
Journal	Indian Geotechnical Journal
Volume Number	46
Issue Number	1
e-ISSN	22773347
Language	English
Publisher	Springer India
Publisher Date	2015-05-13
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geoengineering, Foundations, Hydraulics Image analysis Group pile Subgrade reaction PIV
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

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