Internal Force Test of Super-long Cast-in-place Pile Based on Optical Fiber

Zhang Huihai; Ma Lin; Shi Huaiqing; Wan Zaixin; Wang Donghong

doi:10.3969/j.issn.1007-2993.2021.03.011

Volume 35 Issue 3

Nov. 2021

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Article Navigation > GEOTECHNICAL ENGINEERING TECHNIQUE > 2021 > 35(3): 196-198

Zhang Huihai, Ma Lin, Shi Huaiqing, Wan Zaixin, Wang Donghong. Internal Force Test of Super-long Cast-in-place Pile Based on Optical Fiber[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2021, 35(3): 196-198. doi: 10.3969/j.issn.1007-2993.2021.03.011

Citation:

Zhang Huihai, Ma Lin, Shi Huaiqing, Wan Zaixin, Wang Donghong. Internal Force Test of Super-long Cast-in-place Pile Based on Optical Fiber[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2021, 35(3): 196-198. doi: 10.3969/j.issn.1007-2993.2021.03.011

Citation:

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Internal Force Test of Super-long Cast-in-place Pile Based on Optical Fiber

doi: 10.3969/j.issn.1007-2993.2021.03.011

Zhang Huihai^1,2,3,
Ma Lin^{1,2,3
,
,},
Shi Huaiqing^1,2,3,
Wan Zaixin^1,2,3,
Wang Donghong^1,2,3

1. China JiKan Institute of Engineering Investigations and Design, Co., Ltd., Xi'an 710043, Shaanxi, China;
2. Shaanxi Jikan Engineering Inspection Consultation Co., Ltd., Xi'an 710043, Shaanxi, China;
3. Shaanxi Key Laboratory for the Property and Treatment of Special Soil and Rock, Xi'an 710043, Shaanxi, China

Received Date: 2020-06-10
Available Online: 2021-11-12

Abstract

Abstract

Focusing on the problem of insufficient design data for the super-long piles, field test of distributed optical fiber technology is conducted on the mechanical behavior of the ultra-long piles in a typical supporting project in northwestern China. The results show that the pile side resistance increases first and then decreases along the pile depth, and the critical depth of the pile side friction is 26 m. It is concluded that the range of pile side friction is 58 m from pile body to pile top. The research results can directly guide the design and optimization of pile length.
- super-long piles,
- optical fiber,
- field test,
- internal force