Model Test of the Pullout Bearing Capacity of End-Bearing Torpedo Anchors

Journal of Marine Science and Engineering

卷:10

Jia Liu¹  Gang Li²  Jinli Zhang³ 

[1] School of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China;

[2] Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, China;

[3] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;

关键词: torpedo anchor;    pullout capacity;    embedment depth;    relative density;    pullout angle;   

DOI  :  10.3390/jmse10060728

来源: DOAJ

【 摘 要 】

Torpedo anchors (TAs) are regarded as one of the most efficient mooring solutions for taut mooring systems, and end-bearing TAs are a new type of TA that primarily relies on end-bearing plates at the tail to generate a pile-end resistance to improve their pulloutbearing capacity (P). Therefore, the estimation of the pullout capacity of the end-bearing TA is vital for the design of offshore floating facilities. In this study, pullout model tests were conducted to investigate the P of conventional and end-bearing TAs and examine the effects of factors such as the embedment depth (h), the relative density (D_r), the pullout angle (α), and the area (A) of the bearing plates on P. The test results show that, under oblique pullout loading, the P on the conventional TA increased slowly as displacement increased, while there was a peak on the load–displacement curve of each end-bearing TA with a relatively large A. The end-bearing TAs considerably outperformed the conventional TAs in terms of the P. In addition, increasing h, D_r, and A significantly increased the P of the end-bearing TAs. However, increasing h and D_r slightly decreased the ability of the bearing plates to increase the P of the end-bearing TAs. These research results can provide a guideline for TA installation in deep-sea engineering.

【 授权许可】

Unknown