Weighted Dual Approach to an Equivalent Stiffness-based Load Transfer Model for Jacked Open-ended Pile
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JACM-7-3_041
تاریخ نمایه سازی: 12 مرداد 1400
Abstract:
This paper presents a new equivalent stiffness-based load transfer model for an open-ended pipe pile. The main idea of this model is to replace the sum of unit stiffnesses corresponding with external and internal unit skin frictions in the basic differential equation of load transfer by a weighted average of equivalent unit stiffnesses using a dual approach of equivalent replacement. The contribution of external and internal skin frictions to equivalent unit stiffnesses is evaluated by normalized dimensionless weighting coefficients in the form of average value with the penetration depth. Application of new load transfer model to a jacked open-ended pile concerning semi-empirical models of external and internal unit skin frictions leads to corresponding explicit expressions of weighting coefficient. A computational example of a jacked open-ended pile is carried out. It is shown that the proposed equivalent stiffness-based load transfer model is an effective tool for analyzing behaviors of the open-ended pile in considering the soil plugging effect.
Keywords:
jacked open-ended pile , load transfer method , equivalent stiffness , dual approach of equivalent replacement
Authors
Nguyen Linh
Department of Mechanical Engineering, Thuyloi University (TLU), Hanoi, Vietnam
Ngoc Nguyen
Department of Mechanical Engineering, University of Transport and Communications (UTC), Hanoi, Vietnam
Kuu Nguyen
Department of Mechanical Engineering, Thuyloi University (TLU), Hanoi, Vietnam
Diem Nguyen
Department of Mechanical Engineering, University of Transport and Technology (UTT), Hanoi, Vietnam
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