Modal Failure Probability and System Performance
It is pointed out that the modal failure probability, i.e., the probability that a structure fails in a particular mode, cannot be uniquely defined under the time-invariant framework....

Causal Probabilistic Networks in Assessing the Vulnerability of Existing Buildings
A probabilistic assessment of the 'state of health' of the structure is pursued on the basis of pieces of evidence collected by inspection and by querying, in case, historical data bases....

Fatigue Reliability of Structural Systems Under Earthquake Loads
The authors have develop a methodology for calculating the expected low-cycle fatigue damage in structural components subjected to brief nonstationary random loads. The methodology is...

Time Variant Reliability Under Environmental Loads
Time variant reliability with deteriorating resistance under a stochastic load process is considered. An outcrossing formulation for fatigue degradation is presented, and a simple and...

How to Include Reliability Constraints in Structural Optimization
Structural optimization is a complex process made of design cycles aimed at finding the best possible solution. At each design cycle ultimate and/or serviceability limit states must be...

Reliability Analysis of Navigation Structures
Methods for probabilistic stability analyses of concrete monoliths at hydraulic structures were developed and tested. Numerous analyses were performed using data from six actual structures...

Reliability Modeling of an Engineered Barrier System
The Weibull distribution is widely used in reliability literature as a distribution of time to failure, as it allows for both increasing failure rate (IFR) and decreasing failure rate...

Optimal Utilization of a Multi-Reservoir Water Distribution System
A water supply distribution system planning model (DSPM) has been developed using a linear programming approach. Unlike the conventional formulation, the water demand requirements are...

Reliability-Based Assessment of Navigation Structures
In 1989, the Director of Civil Works, U.S. Army Corps of Engineers (HQUSACE), requested regional assessments of the future modernization needs of Corps Divisions with significant inland...

Computer Aided Learning of System Reliability Assessment
Good education should foster an awareness of the probabilistic nature of the real world. Insensitivity to, or inability to acknowledge and analyze, uncertainties of this world can lead...

Verification of Real-Time Software for Active Structural Control
In this paper we give an overview of our preliminary work in verifying the reliability of real-time software systems for active structural control. While there have been numerous studies...

The Reliability Program in Truncated JC Method
JC method is in common use in the structure reliability analysis. In this paper, the program which can be used as to consider the truncated distribution has been proposed, With this method...

Using Condition Indexes to Evaluate Local Railroad Track Networks
The U.S. Army Construction Engineering Laboratories (USACERL) have developed condition indexes for assessing track condition that apply to local railroads. Indexes were developed for the...

Infrastructure Condition Forecasting Using Neural Networks
Condition forecasting models are critical components of any infrastructure management system. infrastructure condition assessed through periodic inspections which assign ratings to various...

Preliminary Test Planning for the National Maglev Initiative
This paper describes the effort undertaken as part of the National Maglev Initiative to identify, document, and analyze the following maglev system aspects: architecture, operational concepts,...

Structural Engineering in Natural Hazards Mitigation
This two-volume set of proceedings, Structural Engineering in Natural Hazards Mitigation, contains the papers presented at Structures Congress...

Injury Determination and Quantification
Several different approaches for injury determination and quantification are discussed within the framework of the natural resource damage assessment process. The basic concepts and terminology...

ECOR, an International Organization Active in the Coastal Zone
The Engineering Committee on Oceanic Resources is an international organization that fosters and facilitates cooperation in the field of ocean engineering. The purpose of ECOR is: (a)...

Improvement of Terminal Reliability and Travel Time Reliability Under Traffic Management
Terminal reliability and travel time reliability of road networks are proposed as new indicators for road network management and construction. First, the significance of road network management...

Comparing Bowen Ratio-Energy Balance Systems for Measuring ET
Two Bowen ratio-energy balance (BREB) systems for measuring evapotranspiration (ET) under wet and dry conditions were compared. The study sites were an irrigated grass sod near Kimberly,...

 

 

 

 

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