Hydrogeology Comes to the Surface
Before concluding whether groundwater is safe or contaminated, engineers must understand the science of hydrogeology. If they don't understand hydrogeology, unnecessary and...
A Damage Model for Reinforced Concrete
The damage index developed by the authors models concrete damage as a low-cycle fatigue phenomenon. By quantifying the energy dissipated as a fraction of the total energy dissipation capacity,...
SDOF Structural Response Model Accounting for SSI
This paper outlines the theory associated with single-degree-of-freedom (SDOF) structural response models which account for soil-structure interaction (SSI) and evaluates the performance...
Numerical Modeling of Interface Behavior for Drilled Shaft Foundations Under Generalized Loading
To evaluate soil-foundation interaction numerically, an isoparametric thin layer element is used within a 3-D, material nonlinear, general purpose geotechnical analysis system developed...
Subgrade Models for Soil-Structure Interaction Analysis
Historical development of improvements to Winkler's spring subgrade model are traced. The improvements consist of various ways to provide shear coupling between the springs....
Beams on Elastic Foundations: A New Approach
Using the Vlasov model, Vallabhan and Das have developed an effective iterative technique to solve the beam-on-elastic-foundation problem where the soil is assumed to have a uniform thickness...
Settlement of Strip Foundations on Regularly Jointed Rock Masses
The analysis of a long, rigid strip foundation resting on the surface of a regularly jointed rock mass is presented. Two models of the overall rock mass are investigated; one in which...
A Geotechnical Analysis System with Applications for Drilled Shaft Foundations
The development and components of a geotechnical analysis system are described and illustrated for drilled shaft foundations. This finite element-based analysis system incorporates several...
Ultimate Capacity of Deep Foundation by a Rigid-Plastic Analysis
This paper is concerned with the determination of the axial ultimate capacity of a rigid pier on the basis of the theory of perfect plasticity. As an application of the upper bound theorem...
Subgrade Model for Static and Dynamic Response Analysis of Surface Foundations
A new subgrade model is presented for the static and dynamic response analysis of surface foundations. The model consists of a number of horizontal layer model units. Each model unit is...
Axial Capacity of Pressure-Injected Piles: A Cavity Expansion Model
The application of cavity expansion theory to the development of a mathematical model for predicting the ultimate axial capacity of pressure-injected piles in cohesionless soils is presented....
GIS:Technology for Transportation
Geographic Information Systems show promise as important tools for transportation engineers. As computer hardware continues to become less expensive and more powerful, and as the software...
MATRIX.BYU
MATRIX.BYU is a general purpose Fortran program for personal computers which provides a flexible and user friendly platform for the input and output of matrix data, the execution of standard...
A Parallel Partitioning Method for Large-Scale Circuit Simulation
In this paper, we discuss a partitioning method for large-scale circuit in parallel computer simulation. The partitioning method maps the sparse and irregular circuit equations to a special...
Computer Aided Design of Monolithic Integrated Circuits
An algorithm has been developed to relocate the sites of electrical components and integrated circuits. The process simulates site location changes in order that path lengths of conductors...
Constraint Based Design from Research into the Classroom
Design is constraint oriented; much of the design process involves the recognition, formulation and satisfaction of constraints. Constraints are continually being added, deleted and modified...
Risk Assessment for TCE and Related Chemicals Based on Multi-Component, Multi-Media Transport Models
Trichloroethylene (TCE) is known to undergo anaerobic transformation and produces daughter products including dichloroethene, and vinyl chloride which have been known as possible carcinogenic...
Modeling of Gaseous Emission from Landfills and Other Area Sources
Several dispersion models based on the Gaussian equation are evaluated to assess their relative utility in modeling emission dispersion from an area source, such as a landfill. The VAPOR...
Analysis of Model Uncertainty Using Bayesian Monte Carlo
Bayesian Monte Carlo analysis combines Bayesian inference with standard Monte Carlo techniques to provide improved estimates of the uncertainty in water quality model parameters and results....
Longterm Response of Lakes to Acidic Deposition
The longterm response of lakes in the northeastern United States to different levels of acidic deposition was predicted by using a lumped parameter hydrologic/biogeochemical model, the...
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