Lifeline Earthquake Engineering
This proceedings,
Regarding Nature as Raw or Cooked
Tensions between nature and technological culture are mounting as never before. On one side are the deep ecologists who claim the industrial capitalist system has raped the world of nature....
Hydropower's Balancing Act
Relicensing applications are due at the end of 1991 on some 170 hydro plants across the U.S., a large percentage of the more than 400 plants that will go through the process by 2010. Conditions...
Retrofitting Fossil Plant Facilities Structural Perspectives
This publication, Retrofitting Fossil Plant Facilities: Structural Perspectives, was prepared by the Retrofit Task Committee of the Fossil Power Committee of the American Society of Civil...
Analyzing Risk
Engineers designing major projects must often grapple with large areas of uncertainty�from estimating the seismic hazard to a nuclear powerplant to the potential effects of decades of...
Reliability of Large Technological Systems
Codes and regulations regarding large technological systems of growing complexity should take into account the increasingly sophisticated analysis tools that have been and are being developed...
Time Dependent Stochastic Characteristics of the Lateral Random Vibration of Tall Structures with Circular Cross-Section
From full scale measurement of the pressure field at three levels of a concrete chimney with 230 m height the lift coefficient is deduced and the lateral oscillation is investigated. The...
Reliability of Overhead Transmission Lines Subjected to Wind Action
The probability distribution of the strength of steel towers used in transmission lines, due to wind excitation, is evaluated on the basis of test results of 72 towers of various designs,...
Stochastic Behavior of Concrete Arch Dam-Reservoir Fluid-Foundation Systems in Nonstationary Random Vibration
The behavior of elastic arch dam reservoir fluid system subjected to ground acceleration excitations has been studied extensively by Chopra and his colleagues. In their studies, the excitations...
Seismic Ground Motions for Lifeline Analysis
The spatial variation of seismic ground motions necessary for lifeline analysis is determined from a stochastic source model combined with a substitute system representing the equivalent...
Variability of Parameters of Earthquake Ground Motion Recorded by Strong Motion Arrays
The spatial variation of scalar measures of earthquake ground motion, such as peak ground acceleration, strong motion duration, and root-mean-square amplitude, along with various spectral...
Serviceability of Water Transmission Systems
This present paper deals with the vulnerability and reliability of a functionally as well as physically hierarchical lifeline system. Most major lifeline systems have this feature. For...
Identification of a Site-Specific Ground Motion Model
The power spectral density and envelope function of earthquake ground accelerations at a site of interest are determined with the aid of system identification based on information predicted...
Critical Seismic Excitation for Structures
Critical seismic excitations are defined as stationary random functions with a given variance, which maximize the response variance of a linear structural dynamic system. A method is presented...
Earthquake Energy Partitioning in Base Isolated and Dynamically Damped Structures
New earthquake energy spectra are proposed for practical design procedures using energy concepts. The spectra show integrated earthquake input energy of a unit mass with given natural...
Reliability of Electric Power Transmission Systems in Seismically Active Metropolitan Tokyo: Part 1. Network Modeling
A method is proposed for modeling electric power transmission systems. The model can be used to evaluate the reliability of the network connectivity in a seismically active region. It...
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...
Reliability of Electric Power Transmission Systems in Seismically Active Metropolitan Tokyo: Part 3. Seismic Reliability Analysis
The seismic reliability of the connectivity of electric power transmission networks is evaluated by using the results of Parts 1 and 2. The fragility curves for the supporting structures...
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...
Identification of Power Spectra?Linear and Nonlinear Approaches
Linear dynamical filter systems driven by white noise can be used for the generation of stationary and Gaussian processes. A linear approximation method proposed by W. Wedig is presented...
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