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Reliability of Electric Power Transmission Systems in Seismically Active Metropolitan Tokyo: Part 2. Seismic Hazard Analysis
For studying the seismic reliability of a power transmission system of Metropolitan Tokyo, the seismic hazard analysis of Kanto district was performed based on a three dimensionally distributed...

Reconciliation Between Probabilistic and Deterministic Seismic Margin Analysis Methods
This paper presents a procedure for reconciling the results from the probabilistic and deterministic methods for calculating a high confidence of a low probability of failure (HCLPF) capacity...

Some Insight in Autoregressive (AR) Spectral Modeling
The difficulties associated with the determination of reliable autoregressive (AR) approximations of the Pierson-Moskowitz and Davenport spectra are examined from the standpoint of developing...

Continuous Simulation of Gaussian Processes with Given Spectrum
A new algorithm, to be called MIMA (modulated interpolated moving average) allows stationary Gaussian processes with given spectral density to be simulated in continuous time, while providing...

Reliability-Based Analysis of Shallow Foundations
The effects of different parameters on the reliability of shallow foundations are examined. It is found that the footing depth, the footing length, and the load ratio have almost no effect...

Statistical Properties of Prestressed Concrete Beams in Shear
Monte Carlo simulations were performed on prestressed concrete rectangular and tee-section beams in shear produced by a single concentrated load at mid span. The truss analogy model was...

Seismic Characterization of Fracture Properties
Laboratory measurements of the mechanical stiffness, hydraulic conductivity and seismic properties of three natural fractures were made as a function of applied normal stress. Seismic...

Wave Propagation in Hyper-Structures
The concept of hyperelement was introduced by E. Kausel and J.M. Roesset, 1977 in connection with the derivation of the dynamic stiffness matrix for layered continuum problems involving...

Dynamics of Composite Tubes
A displacement-based stiffness method is used to study the characteristics of dispersive wave propagation in laminated composite cylindrical tubes. It is assumed that the tube is composed...

Black Holes
For many years, scientists have searched the skies for black holes; stars even more massive than white dwarves. As of yet, there have been no 100% sure sightings. Since they do not emit...

Curvilinear Long Wave Hydrodynamic (CLHYD) for Tidal Circulation and Storm Surge Propagation
The objective of this paper is to demonstrate the ability of a two-dimensional long wave hydrodynamic model to simulate long wave processes in curvilinear coordinates. The series of tests...

Sounding Out Buried Waste
Geophysical diffraction tomography (GDT) is a new remote sensing technique for quantitative high-resolution subsurface imaging. It is similar to optical holography where long wavelength...

Strides in Nondestructive Testing
Stress wave methods of nondestructive testing are increasingly used in civil engineering applications. Four case histories of the use of different types of stress wave testing are given....

Slips Ahoy
Klancnik discusses the markets for marina construction in the 1990s. The past decade saw a boom in the boating industry and in the design and construction of marinas. The market will remain...

Behavior and Design of Gravity Earth Retaining Structures
This paper summarizes recent research on the soil-structure interaction of gravity earth retaining structures and provides new design procedures for these structures. The procedures currently...

Mudflow Rheology in a Vertically Rotating Flume
Joint research by the U.S. Geological Survey and the University of Missouri-Rolla currently (1990) is being conducted on a 3.05 meters in diameter vertically rotating flume used to simulate...

Rheological Properties of Simulated Debris Flows in the Laboratory Environment
Steady debris flows with or without a snout are simulated in a 'conveyor-belt' flume using dry glass spheres of a uniform size, 5 or 14 mm in diameter, and their...

Experimental Study on the Rheologic Behavior of the Slurry of Viscous Debris Flow
The slurry of viscous debris flow is a kind of dense solid-liquid mixture. It has very complicated rheologic behavior. As shown in the experiment described in this paper, the slurry exhibits...

Two-Dimensional Modeling of Overland Flow
Two-dimensional distributed finite element (F-E) and finite difference (F-D) models are developed to simulate storm events on arid watersheds. The F-E model uses the kinematic wave approximation,...

Unsteady Flow of Bingham Viscoplastic Material in an Open Channel
An analytic solution for transient flow of a Bingham viscoplastic material in an open channel is presented. The solution for the response to a time-varying pressure gradient predicts shear...

 

 

 

 

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