JavaScript is disabled for your browser. Some features of this site may not work without it.
Reliability Of Linear Systems Subjected To Wind Loads

Author
Zhao, Haoran
Abstract
Probabilistic models for wind loads are developed and used to estimate the properties of the responses of linear systems. This analysis involves four steps. First, along-wind, across-wind forces and torque are represented as polynomials of turbulence fluctuations and wake excitations which are assumed to be stationary Gaussian processes. Second, we provide two types of models, namely, the empirical model and the mathematical model, for the second-moment properties of the turbulence fluctuations and wake excitations so that the probability law of the wind loads is characterized completely. Proposed models are then calibrated to the experimental observations. Third, the mathematical model provides an efficient method to estimate the response properties relative to Monte Carlo simulation. The responses are modeled by translation processes that match the target second-moment properties and marginal distributions of the responses. Fourth, the response properties which are of interest, e.g., the mean rates at which the responses exit the safe set, are calculated from the resulting translation processes. We illustrate this procedure by one numerical example.
Date Issued
2015-08-17Subject
Wind loads; Mean crossing rate; Translation processes
Committee Chair
Grigoriu,Mircea Dan
Committee Member
Zhang,Ke
Degree Discipline
Civil and Environmental Engineering
Degree Name
M.S., Civil and Environmental Engineering
Degree Level
Master of Science
Type
dissertation or thesis