Analytical global sensitivity analysis for uncertainty in structural dynamic properties of bridges

作者：Wan, Hua Ping; Ren, Wei Xin^*; Yan, Wang Ji

来源：Journal of Vibration Engineering, 2016, 29(3): 429-435.

DOI：10.16385/j.cnki.issn.1004-4523.2016.03.008

• Bridge structures
• Gaussian process models
• Global sensitivity analysis
• Structural dynamic properties
• Uncertainty

Study on how structural parameter uncertainty influences the structural dynamic properties of bridges has significant importance, such as providing guidance for the seismic-resistant and wind-resistant design, structural dynamic optimization, etc. Global sensitivity analysis (GSA) can be applied to evaluate the effects of individual uncertain parameters and interaction effects among parameters on the overall uncertainty in structural dynamic properties of bridges, thereby ranking the relative importance of uncertain parameters. However, GSA has the disadvantage of high computational cost, which will hinder its wide application to sensitivity analysis of uncertainty in structural dynamic properties of bridges. This paper develops an analytical GSA method based on Gaussian process model, aiming at efficiently and effectively performing sensitivity analysis of uncertainty in structural dynamic properties of bridges.

• 出版日期2016
• 单位合肥工业大学