Field Tests and Simplified Calculation Method for Static Drill Rooted Nodular Pile

In order to explore bearing characteristics of a new-type static drill rooted nodular pile foundation (SDRN), which is composed of PHC pile, bamboo joint pile, and cement soils, field tests of three piles were carried out by embedding internal rebar stress gauges to collect test data. The test resul...

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Bibliographic Details
Published in:Advances in civil engineering 2019-01, Vol.2019 (2019), p.1-13
Main Authors: Zhu, Da-Yong, Zheng, Ling-Wei, Fang, Peng-Fei, Xie, Xinyu, Zhang, Ri-Hong, Wang, Zhong-Jin, Li, Jinzhu
Format: Article
Language:English
Subjects:
Axial forces
Bamboo
Behavior
Cement
Civil engineering
Construction
Drilling
Exploratory drilling
Field study
Field tests
Load
Mathematical analysis
Methods
Pile foundations
Rebar
Reinforcing steels
Settling
Soil bearing capacity
Soil settlement
Strain gauges
Stress gauges
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Summary:In order to explore bearing characteristics of a new-type static drill rooted nodular pile foundation (SDRN), which is composed of PHC pile, bamboo joint pile, and cement soils, field tests of three piles were carried out by embedding internal rebar stress gauges to collect test data. The test results show that the SDRN piles were under elastic state and the load-settlement curves changed slowly before reaching the ultimate capacity. As pile head loads increased, the pile shaft frictions developed progressively, and axial forces gradually reduced along pile depths. Taking into account the interaction between the pile, the cement soils, and surrounding soils, a simplified method for calculating settlements and bearing capacity of SDRN piles was proposed. With corresponding parameters, the computing results obtained by the proposed method were compared with the field experimental data, which indicates acceptable agreements; thus, it is concluded that the applicability and predictive capability of the proposed method were verified.
ISSN:1687-8086
1687-8094
DOI:10.1155/2019/5841840