Journal of Shandong University(Engineering Science) ›› 2021, Vol. 51 ›› Issue (1): 24-31.doi: 10.6040/j.issn.1672-3961.0.2020.265

• Civil Engineering • Previous Articles     Next Articles

Ultimate uplift capacity of shallow vertical plate anchors in sand

Xiuguang SONG1(),He YANG1,Xiaoyan CHEN2,Wenjie CUI1,Hongya YUE1,*(),Kai ZHANG3,Juan TIAN4   

  1. 1. School of Qilu Transportation, Shandong University, Jinan 250002, Shandong, China
    2. Jinan Xingjiadu Yellow River Diversion Irrigation Management Office, Jinan 250100, Shandong, China
    3. Construction Management Department, Jinan Pilot Zone Management Committee, Jinan 250101, Shandong, China
    4. Investment Department, Shandong Express Group Co., Ltd., Jinan 250101, Shandong, China
  • Received:2020-07-03 Online:2021-02-20 Published:2021-03-01
  • Contact: Hongya YUE E-mail:songxiuguang@sdu.edu.cn;yuehongya@mail.sdu.edu.cn

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Abstract:

This paper investigated the pullout behaviour of shallow vertical plate anchors in sand. Pull-out model tests were performed using the particle image velocimetry (PIV) technology, by which the soil deformation and failure mechanisms were observed. Then the ultimate bearing capacity of vertical plate anchors at various soil properties and cover depths was simulated using the finite element limit analysis software. According to the observed failure mechanism, a limit equilibrium solution was developed to calculate the bearing capacity of shallow strip plate anchors in sand, which was then extended for the prediction of the ultimate bearing capacity of rectangle plate anchors by introducing a shape coefficient. Results predicted by the new limit equilibrium solution showed close agreement with those by the lower bound limit analysis solution. The limit equilibrium solution was compared with 51 experimental data, which showed an average of 5% overestimation of the ultimate bearing capacity. This research can provide a theoretical method for the calculation of the ultimate bearing capacity of shallow plate anchors in sand.

Key words: vertical plate anchor, failure mechanism, capacity, limit equilibrium, finite element limit analysis

CLC Number: 

  • TU476

Fig.1

Schematic of test apparatus"

Fig.2

Typical load-displacement curves of vertical anchor plate"

Fig.3

Shear strain contours and displacement vectors at failure"

Fig.4

Comparison and validation of the calculated model"

Fig.5

Comparison of failure model between experimental tests and elatoplastic analysis"

Fig.6

Mechanical model of limit equilibrium method"

Fig.7

Comparison between upper and lower bound solutions and limit equilibrium results"

Table 1

Summary of the experimental studies on vertical plate anchors in sands"

数据来源 试验数量 L/h 锚定板材料 密实度 H/h φ/(°) φin/(°) Cf
文献[29] 10 1 钢板/木板/混凝土/玻璃 压实处理 2 34/36 0.5φ/0 0.42
文献[30] 9 1 铝板 密砂/松砂 2~7 31/34/40.5 0.5φ 0.42/0.26
文献[17-19, 24] 15 1~5/条形 铝板 69.70% 1~8 41[14] 29 0.42
文献[24-25] 9 1~5 钢板 压实处理 1.7~7.7 43.6 10.6 0.42
文献[15] 6 1 钢板 30%/50%/75% 1~5 32/35/39 0.5 φ 0.42/0.26
本研究试验 2 条形 钢板 50%/83% 1~7 36.6/40.3 0.56~0.99 φ —

Fig.8

Comparison between experimental data and limit equilibrium results"

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