A numerical study of pre-boring impacts on side friction of piles
Document Type
Conference Proceeding
Publication Date
1-1-2019
Abstract
In this paper, a feasible finite element technique, using a one-dimensional disk to represent the soil around the pile, is developed with ABAQUS program to explore the impacts of the size of pilot hole on the long-term load carrying capacity of pre-bored piles. The proposed finite element model incorporates cavity expansion theory along with Biot's coupled consolidation theory to capture the change of stress state of the surrounding soil. The long-term side capacity is examined by applying vertical shear displacement on the soil element adjacent to the pile until the ultimate state is reached. Based on the proposed numerical model, a set of reduction factor curves pertaining to the unit side friction are presented for various combinations of pre-bore size and soil conditions, which are expected to provide guidelines for the design and construction of pre-bored piles.
Publication Source (Journal or Book title)
Geotechnical Special Publication
First Page
140
Last Page
148
Recommended Citation
Chen, S., Li, L., & Zhang, Z. (2019). A numerical study of pre-boring impacts on side friction of piles. Geotechnical Special Publication, 2019-March (GSP 307), 140-148. https://doi.org/10.1061/9780784482094.014