声明
致谢
摘要
ABSTRACT
Chapter Ⅰ Introduction
1.1 Background and motivation
1.1.1 Uncertainties of extreme wind load effect coeffcient
1.1.2 Probabilistic estimation of extreme wind load effects with consideration uncertainty and directionality
1.2 Objectives and scope of the research
Chapter Ⅱ Turbulence Uncertainty and Its Effects on Dynamic Wind Pressure Characteristics
2.1 Introduction
2.2 Wind tunnel experiments
2.3 General characteristics of dynamic pressure coefficients
2.4 The probability distributions and peak factors of non-Gaussian pressure coefficients
2.5 Pressure characteristics in various turbulent flows
2.5.1 Effect of mean wind speed profile
2.5.2 Effect of turbulence intensity
2.5.3 Effect of integral length scale
2.5.4 Influence of low-frequency turbulence
2.6 Conclusion
Chapter Ⅲ Probabilistic Estimation of Wind Load Effect Coefficients by Moment-based Hermite Model
3.1 Introduction
3.2 Estimation of extreme value distribution through momem-based translation model
3.3 Performance of moment-based Hermite model
3.3.1 Effects of skewness and kurtosis on peak factor
3.3.2 Applications to non-Gaussian wind pressures
3.4 Anew moment-based translation model and its performance
3.4.1 A moment-based translation model with newly defined statistical moments
3.4.2 The performance of newly proposed translation model
3.5 Conclusion
Chapter Ⅳ Sampling Errors in Probabilistic Estimation of non-Gaussian Wind load Effects by Moment-based Translation Process Method
4.1 Introduction
4.2 Estimation of extreme value distribution through translation process theory
4.2.1 Translation process theory and moment-based Hermite model
4.2.2 PDF-based method with 3-parameter Gamma distribution
4.3 A new strategy for PDF-based method with 3-parameter Gamma distribution
4.3.1 Sensitivity of peak factor to skewness and kurtosis
4.3.2 A new strategy for estimating parameters of 3-parameter Gamma distribution
4.3.3 Validation
4.4 Estimation of sampling errors of peak factor
4.5 Application to non-Gaussian wind pressures on a saddle type roof
4.5.1 Non-Gaussian processes witll a kurtosis larger than 3
4.5.2 Non-Gaussian processes wim a kurtosis smaller than 3
4.5.3 Influence of sample duration
4.6.Conclusion
Chapter Ⅴ Probabilistic Estimation of Multiple Limit State Responses and System Reliability against Wind Loading
5.1 Introduction
5.2 Methodology
5.2.1 Probability distribution of a yearly maximum wind load effect
5.2.2 Joint probability distribution of multiple yearly maximum wind load effects
5.2.3.Joint probability distribution of multiple extremes by Gaussian copula
5.3 Probabilistic extreme wind response of claddings on a saddle type roof
5.3.1 Directional extreme wind speed model
5.3.2 Directional extreme wind load effect coefficients
5.3.3 Estimation of probabilistic single screw internal force with directionality effect
5.3.4 Estimation of probabilistic multiple limit state responses with directionality effect
5.4 Conclusion
Chapter Ⅵ Conclusions and Recommendations
6.1 Conclusions
6.1.2 Probabilistic estimation of non-Gaussian extreme wind load effect coefficients by moment-based Hermite model
6.1.3 Analytical method for sampling error estimation in probability distribution of non-Gaussian extreme wind load effect coefficients by moment-based Hermite model
6.1.4 Probabilistic estimation of extreme wind load effects with consideration uncertainty and directionality
6.2 Recommendations for future work
6.2.1 Turbulence effects on bluff body aerodynamics
6.2.2 Study on PDF of non-Gaussian processes
6.2.4 Reliability of structures against non-stationary winds
参考文献
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