Effects of Heterogeneity and Nonlinearity on Uplift Characteristics of Shallow Horizontal Anchor Plates
- Resource Type
- Original Paper
- Authors
- Zhao, Lianheng; Gong, Xiaogen; Hu, Shihong; Tan, Yigao; Zhao, Zhigang
- Source
- Geotechnical and Geological Engineering: An International Journal. 41(2):1615-1634
- Subject
- Heterogeneity and nonlinearity
The uplift resistance
Failure surface
Anchor plates
Variational principle
- Language
- English
- ISSN
- 0960-3182
1573-1529
Based on the upper bound theorem of limit analysis and variational principle, the uplift resistance of shallow horizontal anchor plates in heterogeneous soil and three-dimensional failure surface of overlying soil are investigated. The results calculated by the theoretical approach are compared with results of the existing solutions and numerical results obtained by software PLAXIS 3D to verify the validity of the variational analysis. Furthermore, the influence of the heterogeneity and nonlinearity on the uplift characteristics of shallow horizontal anchor plates is discussed. The results show that: (i) Increase in the uplift resistance and expansion of failure range are observed with decreasing nonlinear coefficient m and variation coefficient kt of soil uniaxial tensile strength as well as increasing variation coefficient kc of soil initial cohesion. (ii) Heterogeneity and nonlinearity jointly determine the shape of failure surface. This study enriches the analytical method of anchor plates and has great significance for stability and safety of anchor plates.