Estimation of Near-Regional Seismic Ground Motion from Underground Nuclear Explosion Tests
A problem unique to the location of a nuclear waste repository adjacent to the Nevada Test Site is the assessment of seismic ground motion from potential underground nuclear explosion...

Summary of Questions/Answers and Panel Discussions on Session III: Characterization of Design Vibratory Ground Motion

Design of Underground Repository Openings in Hard Rock to Accommodate Vibratory Ground Motions
A methodology and preliminary application for designing repository openings to withstand vibratory ground motions is presented. The methodology first establishes the design basis ground...

Optimal Cost Basis for Seismic Design
The paper summarizes a methodology for establishing seismic design levels based on a cost-benefit assessment. The methodology requires the development of costs and benefits for varying...

Simulated Earthquake Ground Motions for Design Purpose
In this paper, firstly, it was clarified that there is a case where in the long-period range there is seen a tendency to follow the ω+-2$/ model approximately while in the short-period...

Evaluation of Code Accidental-Torsion Provisions Using Earthquake Records from Buildings
Building code provisions for accidental torsion are evaluated from analysis of earthquake-induced motions of three nominally-symmetric-plan buildings. The results demonstrate that the...

Empirical Prediction of Strong Ground Motion
In 1982, we published equations for the prediction of various measures of ground motion as a function of earthquake magnitude, distance from the earthquake rupture, and site geology. Many...

New Methods to Characterize Site Amplification
Methods alternative to spectral ratios are introduced to characterize site amplification. The methods are developed by using a range of models, from the simple constant amplification model...

Three-Dimensional Simulations of Ground Motions in Sedimentary Basins
This report describes work being done at the U.S. Geological Survey on 3-D simulations of earthquake ground motions in sedimentary basins. The ultimate goal of this research is to predict...

Seismic Condition Assessment of the San Francisco-Oakland Bay Bridge
The project summarized here was initiated at the University of California at Berkeley to study seismic behavior of the San Francisco-Oakland Bay Bridge and to develop recommendations for...

Report and Summary of ATC-31—Evaluation of the Performance of Seismically Retrofitted Buildings
Structural and damage data for seismically retrofitted buildings affected by the October 1, 1987 Whittier Narrows and October 17, 1989 Loma Prieta, California earthquakes were collected...

Recent Improvements in the LLNL PSHA Methodology
For the purpose of comparison, the LLNL PSHA methodology is defined as the 1989 version developed under contract for the NRC. Additional work on a series of subsequent projects for DOE...

Wind Resistant Design and Response Control of Tall Building
This paper presents an overall view of the wind resistant design and response control of the tall buildings in Japan, the Crystal Tower in Osaka and the Landmark Tower in Yokohama. The...

A California Tower: Response to Seismic Forces
First Interstate World Center is a signature building for the city of Los Angeles. The granite clad tower with its serrated facade rises 1,018 ft. above street level. It is the tallest...

Structural Response Using Stiffness Decoupler
The structural properties of a new stiffness decoupler developed by Hu, Kirmser and Swartz at Kansas State University, and its applications as an energy absorber and a device to isolate...

Response of Equipment in Structures Supported on Resilient-Friction Base Isolators Subjected to Ground Motion
In this paper, the response of equipment in structures on a particular friction-type device, the resilient-friction base isolator, is examined. The R-FBI is composed of layers of Teflon...

Robust Control for Buildings Under Earthquake
Robust control techniques are applied to civil engineering structures subjected to earthquake excitation. Full state feedback and observer based control laws are used to reduce the response...

Wind-Induced Vibrations of Tall Buildings Using Tuned Mass Damper
A Lagrange formulation is applied to tall buildings using tuned mass damper. The resulting equations of motion are analyzed using a frequency window method. The method reduces the computational...

Floor Response Spectra Analysis Including Correlations of Multiple Support Motions
This paper deals with the response spectrum analysis method of the secondary structures including the correlation effects between nonuniform support excitations. Based on the random vibration...

Radionuclide Transport in Fractured Media
Until recently, the classical advective-dispersive transport equation was considered to be an adequate model for describing the motion of a solute (e.g. radionuclides) in porous and fractured...

 

 

 

 

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