Test and Study of Pipe Pile Penetration in Cohesive Soil Using FBG Sensing Technology
Institute of civil engineering, Qingdao university of technology, Qingdao 266000, China
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Sensors 2020, 20(7), 1934; https://doi.org/10.3390/s20071934
Received: 12 February 2020
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Revised: 24 March 2020
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Accepted: 26 March 2020
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Published: 30 March 2020
(This article belongs to the Special Issue Sensors for Nondestructive Testing and Evaluation)
In order to examine the applicability of Fiber Bragg Grating (FBG) sensing technology in the static penetration of pipe piles, static penetration tests in clay were conducted using double-wall open and closed model pipe piles. The strain was measured using FBG sensors, and the plug height was measured using a cable displacement sensor. Using one open pile and two closed piles, the difference in pipe pile penetration was compared and analyzed. Based on FBG sensing technology and the strain data, the penetration characteristics of the pipe pile, such as axial force, lateral friction, and driving resistance were examined. Results showed that FBG sensing technology has superior testing performance for the pipe pile penetration process, can accurately reflect the strain time history of pipe piles, and can clearly reflect the penetration process of pipe piles with increasing penetration depth. In addition, the variation law of the characteristics of the jacked pile pile–soil interface was obtained. This test has significance for model tests and the engineering design of pipe piles.
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Keywords:
Fiber Bragg Grating sensor; jacked pile; double-wall open-closed pipe pile; earth plug effect; pile driving resistance; compaction effect
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MDPI and ACS Style
Wang, Y.; Liu, X.; Zhang, M.; Sang, S.; Bai, X. Test and Study of Pipe Pile Penetration in Cohesive Soil Using FBG Sensing Technology. Sensors 2020, 20, 1934. https://doi.org/10.3390/s20071934
AMA Style
Wang Y, Liu X, Zhang M, Sang S, Bai X. Test and Study of Pipe Pile Penetration in Cohesive Soil Using FBG Sensing Technology. Sensors. 2020; 20(7):1934. https://doi.org/10.3390/s20071934
Chicago/Turabian StyleWang, Yonghong, Xueying Liu, Mingyi Zhang, Songkui Sang, and Xiaoyu Bai. 2020. "Test and Study of Pipe Pile Penetration in Cohesive Soil Using FBG Sensing Technology" Sensors 20, no. 7: 1934. https://doi.org/10.3390/s20071934
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