Abstract: For geohazards and geotechnics, numerous problems involve large deformation, such as the installation of foundations, landslides, debris flow, collapse of underground structures, and the formation of sinkholes (Barandiarán Villegas, 2018). Benefitting from the sustained development of computing power, numerical simulations have become useful analytical methods in geomechanics and related fields. This special issue contains original research articles on the application of numerical methods to large deformation analysis of geohazards and geotechnics. Focal points of the issue include innovative uses of: (1) mesh-based methods, (2) mesh-free particle methods, (3) mesh-based particle methods, (4) discontinuous numerical methods, and finally (5) practical applications of the above techniques, e.g. case studies and benchmarking exercises.

岩土工程及灾害的大变形模拟

[1]Belytschko T, Lu YY, Gu L, 1994. Element-free Galerkin methods. International Journal for Numerical Methods in Engineering, 37(2):229-256.

[2]Belytschko T, Liu WK, Moran B, et al., 2013. Nonlinear Finite Elements for Continua and Structures. John Wiley & Sons, Hoboken, USA.

[3]Calvetti F, 2008. Discrete modelling of granular materials and geotechnical problems. European Journal of Environmental and Civil Engineering, 12(7-8):951-965.

[4]Chen JS, Pan CH, Wu CT, et al., 1996. Reproducing kernel particle methods for large deformation analysis of non-linear structures. Computer Methods in Applied Mechanics and Engineering, 139(1-4):195-227.

[5]Cundall PA, Strack OD, 1979. A discrete numerical model for granular assemblies. Geotechnique, 29:47-65.

[6]Dai ZL, Huang Y, Cheng HL, et al., 2017. SPH model for fluid–structure interaction and its application to debris flow impact estimation. Landslides, 14(3):917-928.

[7]Guo N, Yang ZX, 2021. NSPFEM2D: a lightweight 2D node-based smoothed particle finite element method code for modeling large deformation. Computers and Geotechnics, 140:104484.

[8]Guo N, Yang ZX, Yuan WH, et al., 2021. A coupled SPFEM/DEM approach for multiscale modeling of large-deformation geomechanical problems. International Journal for Numerical and Analytical Methods in Geomechanics, 45(6):648-667.

[9]Hamann T, Qiu G, Grabe J, 2015. Application of a coupled Eulerian–Lagrangian approach on pile installation problems under partially drained conditions. Computers and Geotechnics, 63:279-290.

[10]Harlow FH, 1964. The particle-in-cell computing method for fluid dynamics. Methods in Computational Physics, 3: 319-343.

[11]Hu Y, Randolph MF, 1998. A practical numerical approach for large deformation problems in soil. International Journal for Numerical and Analytical Methods in Geomechanics, 22(5):327-350.

[12]Jin YF, Yin ZY, Shen SL, et al., 2016. Selection of sand models and identification of parameters using an enhanced genetic algorithm. International Journal for Numerical and Analytical Methods in Geomechanics, 40(8):1219-1240.

[13]Jin YF, Yin ZY, Wu ZX, et al., 2018a. Identifying parameters of easily crushable sand and application to offshore pile driving. Ocean Engineering, 154:416-429.

[14]Jin YF, Yin ZY, Wu ZX, et al., 2018b. Numerical modeling of pile penetration in silica sands considering the effect of grain breakage. Finite Elements in Analysis and Design, 144:15-29.

[15]Jin YF, Yin ZY, Zhou WH, et al., 2019. Identifying parameters of advanced soil models using an enhanced transitional Markov chain Monte Carlo method. Acta Geotechnica, 14(6):1925-1947.

[16]Jin YF, Yuan WH, Yin ZY, et al., 2020a. An edge-based strain smoothing particle finite element method for large deformation problems in geotechnical engineering. International Journal for Numerical and Analytical Methods in Geomechanics, 44(7):923-941.

[17]Jin YF, Yin ZY, Yuan WH, 2020b. Simulating retrogressive slope failure using two different smoothed particle finite element methods: a comparative study. Engineering Geology, 279:105870.

[18]Jin YF, Yin ZY, Li J, et al., 2021a. A novel implicit coupled hydro-mechanical SPFEM approach for modelling of delayed failure of cut slope in soft sensitive clay. Computers and Geotechnics, 140:104474.

[19]Jin YF, Yin ZY, Zhou XW, et al., 2021b. A stable node-based smoothed PFEM for solving geotechnical large deformation 2D problems. Computer Methods in Applied Mechanics and Engineering, 387:114179.

[20]Jin Z, Lu Z, Yang Y, 2021. Numerical analysis of column collapse by smoothed particle hydrodynamics with an advanced critical state-based model. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):882-893.

[21]Liang WJ, Zhao JD, 2019. Multiscale modeling of large deformation in geomechanics. International Journal for Numerical and Analytical Methods in Geomechanics, 43(5):1080-1114.

[22]Lucy LB, 1977. A numerical approach to the testing of the fission hypothesis. Astronomical Journal, 82:1013-1024.

[23]Meng JJ, Zhang X, Utili S, et al., 2021. A nodal-integration based particle finite element method (N-PFEM) to model cliff recession. Geomorphology, 381:107666.

[24]Oñate E, Idelsohn SR, Del Pin F, et al., 2004. The particle finite element method—an overview. International Journal of Computational Methods, 1(2):267-307.

[25]Qiu G, Henke S, Grabe J, 2011. Application of a coupled Eulerian–Lagrangian approach on geomechanical problems involving large deformations. Computers and Geotechnics, 38(1):30-39.

[26]Qu CX, Wang G, Feng KW, et al., 2021. Large deformation analysis of slope failure using material point method with cross-correlated random fields. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):856-869.

[27]Rao SS, 2017. The Finite Element Method in Engineering, 6th Edition. Butterworth-Heinemann, Oxford, UK.

[28]Shan ZG, Liao ZX, Dong YK, et al., 2021. Implementation of absorbing boundary conditions in dynamic simulation of the material point method. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):870-881.

[29]Barandiarán Villegas LB, 2018. Sinkhole Development over Karstic Substratum. An MPM Approach. Universitat Politècnica de Catalunya, Barcelona, Spain.

[30]Yin ZY, Wang P, Zhang FS, 2020. Effect of particle shape on the progressive failure of shield tunnel face in granular soils by coupled FDM-DEM method. Tunnelling and Underground Space Technology, 100:103394.

[31]Yuan WH, Wang B, Zhang W, et al., 2019. Development of an explicit smoothed particle finite element method for geotechnical applications. Computers and Geotechnics, 106: 42-51.

[32]Yuan WH, Wang HC, Liu K, et al., 2021. Analysis of large deformation geotechnical problems using implicit generalized interpolation material point method. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):909-923.

[33]Zhang W, Yuan WH, Dai BB, 2018. Smoothed particle finite-element method for large-deformation problems in geomechanics. International Journal of Geomechanics, 18(4):04018010.

[34]Zhang X, 2014. Particle Finite Element Method in Geomechanics. PhD Thesis, The University of Newcastle, Australia.

[35]Zhang X, Krabbenhoft K, Pedroso DM, et al., 2013. Particle finite element analysis of large deformation and granular flow problems. Computers and Geotechnics, 54:133-142.

[36]Zhang ZQ, Li YL, Zhu XY, et al., 2021. Meso-scale corrosion expansion cracking of ribbed reinforced concrete based on a 3D random aggregate model. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):924-940.

[37]Zhang ZY, Jin XG, Luo W, 2019. Numerical study on the collapse behaviors of shallow tunnel faces under open-face excavation condition using mesh-free method. Journal of Engineering Mechanics, 145(11):04019085.

[38]Zheng G, Zhu R, Sun JB, et al., 2021. Numerical study on failure propagation between two closely spaced tunnels. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(11):894-908.