Next Article in Journal
Demodulation of Chaos Phase Modulation Spread Spectrum Signals Using Machine Learning Methods and Its Evaluation for Underwater Acoustic Communication
Next Article in Special Issue
Distributed Temperature Sensing Monitoring of Well Completion Processes in a CO2 Geological Storage Demonstration Site
Previous Article in Journal
Identity Management Systems for the Internet of Things: A Survey Towards Blockchain Solutions
Previous Article in Special Issue
Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle

Field Performance of Open-Ended Prestressed High-Strength Concrete Pipe Piles Jacked into Clay

1
College of Engineering, Ocean University of China, Qingdao 266100, China
2
Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China
3
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
4
School of Civil Engineering, and Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(12), 4216; https://doi.org/10.3390/s18124216
Received: 31 October 2018 / Revised: 24 November 2018 / Accepted: 29 November 2018 / Published: 1 December 2018
(This article belongs to the Special Issue Fiber Optic Sensors for Structural and Geotechnical Monitoring)
  |  
PDF [4784 KB, uploaded 11 December 2018]
  |  

Abstract

The behavior of open-ended pipe piles is different from that of closed-ended pipe piles due to the soil plugging effect. In this study, a series of field tests were conducted to investigate the behavior of open-ended prestressed high-strength concrete (PHC) pipe piles installed into clay. Two open-ended PHC pipe piles were instrumented with Fiber Bragg Grating (FBG) sensors and jacked into clay for subsequent static loading tests. Soil plug length of the test piles was continuously measured during installation, allowing for calculation of the incremental filling ratio. The recorded data in static loading test were reported and analyzed. The distribution of residual forces after installation and the effect on the bearing capacity were also discussed in detail. The test piles were observed to be in partially plugged condition during installation. The measured ultimate shaft resistance and total resistance of the test piles were 639 and 1180 kN, respectively. The residual forces locked in the test piles after installation significantly affected the evaluation of the axial forces, and thus the shaft and end resistances. It tended to underestimate the end resistances and overestimate the shaft resistances if the residual forces were not considered in the loading test. However, the residual forces did not affect the total bearing capacity of open-ended PHC pipe piles in this study. View Full-Text
Keywords: open-ended pipe piles; field test; static loading test; soil plugging; residual forces open-ended pipe piles; field test; static loading test; soil plugging; residual forces
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Kou, H.-L.; Diao, W.-Z.; Liu, T.; Yang, D.-L.; Horpibulsuk, S. Field Performance of Open-Ended Prestressed High-Strength Concrete Pipe Piles Jacked into Clay. Sensors 2018, 18, 4216.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top