Multi-scale investigation of active failure for various modes of wall movement

作     者：Ahmet Talha GEZGIN Behzad SOLTANBEIGI Adlen ALTUNBAS Ozer CINICIOGLU Ahmet Talha GEZGIN;Behzad SOLTANBEIGI;Adlen ALTUNBAS;Ozer CINICIOGLU

作者机构：Department of Civil EngineeringBogazici UniversityIstanbul34342Turkey Estimating&Engineering DepartmentVan Oord Dredging and Marine ContractorsRotterdam3063 NHThe Netherlands Department of Civil EngineeringMedipol UniversityIstanbul34810Turkey 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2021年第15卷第4期

页      面：961-979页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

基　　金：The authors would like to thank the Scientific and Research Council of Turkey(TUBITAK)for supporting this study with project number 119M849 

主　　题：discrete-element modelling granular materials retaining walls particle shape arching 

摘      要：Retained backfill response to wall movement depends on factors that range from boundary conditions to the geometrical characteristic of individual ***,mechanical understanding of the problem warrants multi-scale analyses that investigate reciprocal relationships between macro and micro ***,this study attempts a multi-scale examination of failure evolution in cohesionless ***,the transition of retained backfills from at-rest condition to the active state is modeled using the discrete element method(DEM).DEM allows conducting virtual experiments,with which the variation of particle and boundary properties is ***,various modes of wall movement(translation and rotation)toward the active state are modeled using two different backfills with distinct particle shapes(spherical and nonspherical)under varying *** each model,cumulative rotations of single particles are tracked,and the results are used to analyze the evolution of shear bands and their geometric ***,dependencies of lateral pressure coefficients and coordination numbers,as respective macro and micro behavior indicators,on particle shape,boundary conditions,and surcharge levels are ***,contact force networks are visually determined,and their influences on pressure distribution and deformation mechanisms are discussed with reference to the associated modes of wall movement and particle shapes.