Field tests on installation performance of a new hybrid dynamically installed anchor

HAN Cong-cong; SHEN Kan-min; LI Wei; ZHAO Su-wen; WANG Jing; LIU Jun; KONG Xian-jing

doi:10.11779/CJGE202109010

Volume 43 Issue 9

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Chinese Journal of Geotechnical Engineering > 2021 > 43(9): 1657-1665. > DOI: 10.11779/CJGE202109010

HAN Cong-cong, SHEN Kan-min, LI Wei, ZHAO Su-wen, WANG Jing, LIU Jun, KONG Xian-jing. Field tests on installation performance of a new hybrid dynamically installed anchor[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(9): 1657-1665. DOI: 10.11779/CJGE202109010

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Field tests on installation performance of a new hybrid dynamically installed anchor

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2.
PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
3.
Zhejiang Huadong Construction Engineering Corporation Limited, Hangzhou 310014, China

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Received Date: February 02, 2021
Available Online: December 02, 2022

Graphical Abstract

Abstract

Abstract

The dynamically installed anchor (DIA) is a newly developed anchoring foundation applied to ocean engineering, which is installed through gravitational energy and used to secure floating structures. On the basis of the existing laboratory investigation and numerical simulation results, the present study aims to investigate the installation performance of a self-developed hybrid DIA (comprising a plate-shaped anchor and a booster) by performing large-scale field tests (sea trials) with the actual environmental loads taken into consideration. In field tests, the effects of the shape of the plate-shaped anchor, the booster weight, and the release height on the final penetration depth of the hybrid DIA within the seabed are investigated. The results indicate that the present hybrid DIA can successfully penetrate into the seabed, which is largely unaffected by environmental loads including wind, wave and current. After installation, the tilt angle from the central axis of the hybrid DIA to the vertical direction is less than 8°. Moreover, a prediction model based on the total energy of the hybrid DIA is proposed to quickly estimate the final penetration depth of the hybrid DIA, which may provide references for engineering design.
- dynamically installed anchor,
- field test,
- penetration depth,
- seabed sediment,
- environmental load,
- sea trial

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References (24)

References

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