International Journal of Geomechanics: Recent submissions

Now showing items 3981-4000 of 4049

    • Modeling Compression Behavior of Structured Geomaterials 

      Martin D. Liu; John P. Carter; Chandra S. Desai (American Society of Civil Engineers, 2003)
      The influence of the natural (or artificially induced) structure of a geomaterial on its compression behavior is investigated. An approach for modeling this influence for various structured geomaterials is proposed by using ...

    • Reviewers 

      Unknown author (American Society of Civil Engineers, 2003)

    • Volumetric Deformation of Natural Clays 

      M. D. Liu; J. P. Carter (American Society of Civil Engineers, 2003)
      A theoretical framework to describe the behavior of natural clay is proposed in a new four-dimensional space, consisting of the current stress state, stress history, the current voids ratio, and a measure of the current ...

    • General Strength Criterion for Geomaterials 

      M. D. Liu; J. P. Carter (American Society of Civil Engineers, 2003)
      This note presents the results of a study on the variation of the strength of geomaterials. A general isotropic strength criterion is proposed which unifies the peak strength and critical state (or steady state) strength ...

    • Numerical Parametric Study of Piezocone Penetration Test in Clays 

      Murad Abu-Farsakh; Mehmet Tumay; George Voyiadjis (American Society of Civil Engineers, 2003)
      This paper presents a numerical model for the simulation of the piezocone penetration test that is used to carry out a parametric study of the piezocone penetration test in cohesive soils. The piezocone penetration is ...

    • New Approach to Limit Equilibrium and Reliability Analysis of Soil Nailed Walls 

      Jian-Xin Yuan; Yuwen Yang; Leslie George Tham; Peter Kai Kwong Lee; Yuet Tsui (American Society of Civil Engineers, 2003)
      A new approach to the limit equilibrium method is developed and used for the analysis of soil nailed walls. The basic procedure of the new approach is to compute the interslice forces by recursion and to fulfill the ...

    • Curvature and Bending Moments from Inclinometer Data 

      P. S. K. Ooi; T. L. Ramsey (American Society of Civil Engineers, 2003)
      Bending moments in excavation support walls and deep foundations are frequently estimated using curvature derived from inclinometer surveys. The basic idea involves fitting a curve or a series of curves to the inclinometer ...

    • Numerical Study of Scale Effects on the Stiffness Modulus of Rock Masses 

      Marta Castelli; Valeria Saetta; Claudio Scavia (American Society of Civil Engineers, 2003)
      The purpose of this paper is to contribute to the study of scale effects on the stiffness modulus of discontinuous rock masses from a mechanical point of view. The study has been conducted on the basis of the observation ...

    • Characterization of Strength and Deformation of Jointed Rock Mass Based on Statistical Analysis 

      Sridevi Jade; T. G. Sitharam (American Society of Civil Engineers, 2003)
      This paper deals with the statistical analysis of the uniaxial compressive strength and of the elastic modulus of jointed rock masses under different confining pressures. Properties of the rock masses with different joint ...

    • Characterization of Heterogeneous Soils Using Surface Waves: Homogenization and Numerical Modeling 

      R. Chammas; O. Abraham; P. Cote; H. A. Pedersen; J. F. Semblat (American Society of Civil Engineers, 2003)
      Seismic surface waves are well-adapted to study the elastic parameters, and hence the mechanical properties, of soils. The aim herein is to evaluate whether Rayleigh waves in heterogeneous soils may be used to estimate ...

    • Contaminant Transport in Fissured Soils by Three-Dimensional Boundary Elements 

      Abbas Elzein (American Society of Civil Engineers, 2003)
      A boundary element method for the solution of contaminant transport equations in three-dimensional (3D) fissured soils with non-equilibrium exchange is proposed. Fast transport is assumed to take place through a network ...

    • Probability of Failure Occurrence and Recurrence in Rock Slopes Stability Analysis 

      Rinaldo Genevois; Roberto W. Romeo (American Society of Civil Engineers, 2003)
      The paper illustrates the procedures for computing the probability of failure occurrence that represents the potential that a slope can undergo failure due to both the spatial variability of the structural and geomechanical ...

    • Viscosity Effects on One-Dimensional Consolidation of Clay 

      Bipul C. Hawlader; Balasingam Muhunthan; Goro Imai (American Society of Civil Engineers, 2003)
      A constitutive relationship for one-dimensional consolidation of clays is presented. It recognizes the importance of structural viscosity and yielding in controlling many of the phenomena associated with the consolidation ...

    • Closure to “Associated and Nonassociated Aspects of the Constitutive Laws for Coupled Elastic/Plastic Materials” by I. F. Collins 

      I. F. Collins (American Society of Civil Engineers, 2003)

    • Failure Process of Granite 

      L. Li; P. K. K. Lee; Y. Tsui; L. G. Tham; C. A. Tang (American Society of Civil Engineers, 2003)
      The initiation, development, and coalescence of cracks when a rock specimen is loaded have been studied by various researchers. The current consensus is that such complex process is however not yet fully understood. In the ...

    • Constitutive Model for Static Liquefaction 

      Z. Mróz; N. Boukpeti; A. Drescher (American Society of Civil Engineers, 2003)
      A general, three-dimensional formulation of the elastoplastic refined Superior sand constitutive model is presented. The model is aimed at realistic simulation of liquefaction phenomena occurring in loose saturated granular ...

    • Direct Shear Test of Sandstone-Concrete Joints 

      Xue F. Gu; Julian P. Seidel; Chris M. Haberfield (American Society of Civil Engineers, 2003)
      Understanding the shear behavior of sandstone-concrete joints is important for the design and analysis of concrete structures interacting with sandstone, for example rock socketed piles, rock anchors, and dam foundations. ...

    • Intake Shape Factors for Entry Points in Porous Media with Transversely Isotropic Hydraulic Conductivity 

      A. P. S. Selvadurai (American Society of Civil Engineers, 2003)
      The intake shape factors for spherical and disc-shaped entry points located within a hydraulically transversely isotropic porous medium of infinite extent are presented in

    • Numerical Analysis of Neutron Moisture Probe Measurements 

      Jie Li; David W. Smith; Stephen G. Fityus; Daichao Sheng (American Society of Civil Engineers, 2003)
      The neutron probe has proven to be an effective means for monitoring long term in situ soil moisture variations. However, it is difficult to experimentally correlate neutron probe data (i.e., neutron counts) with accurate ...

    • 3D Effects of Surface Construction Over Existing Subway Tunnels 

      M. Abdel‐Meguid; R. K. Rowe; K. Y. Lo (American Society of Civil Engineers, 2002)
      A 3D elasto‐plastic finite element model is used to examine the effect of construction over two existing tunnels. Tunnel deformation and the change in lining shape are compared with the field measurements of the York‐Mills ...