A Time-Dependent Microplane Model for Creep of Cohesive Soils
The microplane model is used in this paper to describe the time-dependent (creep) behavior of cohesive soils (clays). The constitutive equations are defined on each of a set of microplanes...
Numerical Undrained Cyclic Loading Simulations Using the Discrete Element Method
Three dimensional numerical experiments on random arrays of rough spheres were performed using the discrete element method to study the behavior of granular soil and the results were compared...
Interparticle Sliding and Rolling
Numerical experiments are done with a continuum plasticity program in order to study the initiation and evolution of shear bands. Many elements are used in order to resolve families of...
Scale Effects in Cone Penetration Tests
A field testing program was undertaken to examine the existence of scale effects between a miniature 1.27 cm2 and 15 cm2...
Plate Load and Pressuremeter Testing in Saprolite
On the island of Oahu, Hawaii, an exploratory tunnel for the Interstate Route H-3 highway was completed in December 1989. The purpose of the exploratory tunnel was two-fold; first to locate...
In Situ Determination of Smith Soil Model Parameters for Wave Equation Analysis
A methodology for in situ determination of Smith soil model parameters for wave equation analysis is presented. The method uses a small-rod penetration test in conjunction with CAPWAPC...
Hypermedia and its Application to Geotechnical Databases
The concept of hypermedia has the potential for greatly enhancing existing database management software. In the present paper the concept of hypermedia is briefly described, the nature...
Relational Database Design and Technology
Logical and physical design of a Relational Database Management System (RDBMS) is presented with a simple geotechnical database example. Fundamental relational database design principles...
Settlement of Shallow Foundations in Sands Selection of Stiffness on the Basis of Penetration Resistance
The paper discusses the use of the formulae of the theory of elasticity to compute the settlement of shallow foundations in sands when subjected to static loading. Special emphasis is...
Wave Equation Modelling of the SPT
The stress wave propagation in the Standard Penetration Test (SPT) is described in this paper. It is shown that the SPT is a complex dynamic system and that both force and motion measurements...
A Hybrid Expert System for Design with Geosynthetics
A prototype hybrid expert system is presented that selects geosynthetic materials and performs detailed designs for different geotechnical applications. An expert system is used to give...
An Expert System for Estimating Soil Strength Parameters
An expert system to aid in selecting shear-strength parameters for use in stability analysis was developed for use on a PC. It provides guidance in interpreting strength measurements and...
Soil-Cement Mixed Wall Technique
This paper introduces the soil-cement mixed wall technique and its applications for the installation of cutoff walls, excavation support walls and soil-crete columns for soil stabilization....
Stabilization of Collapsible Alluvial Soil Using Dynamic Compaction
The effectiveness of dynamic compaction for improving collapsible soils was evaluated under field conditions using full scale load tests performed on 1.5 m square footings. Tests were...
Jet Grouting?Uses for Soil Improvement
The frequency of use of any engineering technique depends mainly on the technical feasibility and economics of the system. In geotechnical engineering, the more problems a construction...
Group Efficiency of Piles Driven Into Sands: A Simple Approach
A simplified analysis for computing group efficiency of circular displacement piles in sands is presented. Pile installation is assumed to cause soil displacements in the horizontal direction...
Three-Dimensional Nonlinear Study of Piles and Simplified Models
In a recent study the authors examined the effect of the nonlinear behavior of soil on the axial and lateral response of one or two piles due to monotonic and cyclic pseudodynamic loading...
An Expert System for Preliminary Ground Improvement Selection
Ground Improvement is an area which has rapidly advanced in the past two decades. Most of the work has resulted from experience in field work. Thus experience has played a vital role in...
SOLES: A Knowledge-Based Soil Liquefaction Potential Evaluation System
A prototype computer program, SOLES has been developed to evaluate the liquefaction potential of soil subjected to earthquake excitations. The program applies both rule-and algorithm-based...
Evaluation of Geotechnical Design Parameters by Expert System Techniques
This study refers to application of an artificial intelligence technique to evaluate geotechnical design parameters in the soil design definition. This complex evaluation is incorporeted...
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