Ultimate pullout capacity of single vertical plate anchors in sand

Author(s):  
Peizhi Zhuang ◽  
Hongya Yue ◽  
Xiuguang Song ◽  
Renjuan Sun ◽  
Jianqing Wu ◽  
...  
2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Tugen Feng ◽  
Jingyao Zong ◽  
Wei Jiang ◽  
Jian Zhang ◽  
Jian Song

Three-dimensional nonlinear numerical analysis is carried out to determine the ultimate pullout capacity of a square plate anchor in layered clay using the large finite element analysis software ABAQUS. An empirical formula for the pullout bearing capacity coefficient of a plate anchor in layered soils is proposed based on the bearing characteristics of plate anchors in single-layer soils. The results show that a circular flow (circulation field) is induced around the plate anchor during the uplift process and that the flow velocity and circulation field range are mainly affected by the properties of the soil around the plate anchor. The bearing characteristics of plate anchors in layered soils are influenced by factors such as the embedment depth of the plate anchor, the friction coefficient between the soil and the plate anchor, the thickness of the upper soil layer, and the thickness of the middle soil layer. The rationality of the finite element numerical calculation results and the empirical formula is verified by comparing the results from this study with results previously reported in the literature.


2012 ◽  
Vol 4 (2) ◽  
pp. 105-120 ◽  
Author(s):  
G.S. Kame ◽  
D.M. Dewaikar ◽  
Deepankar Choudhury

2013 ◽  
Vol 5 (4) ◽  
pp. 299-312 ◽  
Author(s):  
Paramita Bhattacharya ◽  
Jyant Kumar

2021 ◽  
Vol 9 (8) ◽  
pp. 913
Author(s):  
Haixiao Liu ◽  
Yancheng Yang ◽  
Jinsong Peng

Anchors may exhibit various complicated behaviors in the seabed, especially for deepwater anchors including gravity installed anchors (GIAs) and drag embedment plate anchors (drag anchors), stimulating the development of an efficient analytical tool that applies to a variety of anchors. The present paper introduces a unified model for analyzing different anchor behaviors in both clay and sand, consisting of unified concepts, mechanical models, and analytical procedure. The kinematic behaviors of the anchors are classified uniformly as three types, i.e., diving, pulling out, and keying. By utilizing the least-force principle, various anchor properties, such as the ultimate pullout capacity (UPC), failure mode, movement direction, embedment loss, and kinematic trajectory, can all be determined by the combination and analysis of the three behaviors. Applications of the model are demonstrated summarily, by solving the UPC and the failure mode of anchor piles and suction anchors, the kinematic trajectory of drag anchors in a single soil layer or layered soils, the maximum embedment loss (MEL) of suction embedded plate anchors (SEPLAs) and OMNI-Max anchors, and the kinematic behavior of OMNI-Max anchors. Compared to existing theoretical methods, this unified model shows strong applicability and potentiality in solving a variety of behaviors and properties of different anchors under complicated seabed conditions.


2018 ◽  
Vol 37 (4) ◽  
pp. 2625-2637 ◽  
Author(s):  
Qian-qing Zhang ◽  
Ruo-feng Feng ◽  
Zhen-hao Xu ◽  
Shan-wei Liu ◽  
Jian-gu Qian

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