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| Reliability analysis of wind resistance of transmission tower-line system based on probability density evolution |
| Received:October 12, 2022 Revised:November 30, 2022 |
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| DOI：10.7511/jslx20221012002 |
| KeyWord:tower-line system fluctuating wind field dimension reduction spectral representation method reliability probability density evolution |
| Author | Institution |
| 谭淳元 |
武汉工程大学 土木工程与建筑学院, 武汉 |
| 张文远 |
武汉工程大学 土木工程与建筑学院, 武汉 |
| 刘章军 |
武汉工程大学 土木工程与建筑学院, 武汉 |
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| Abstract: |
| In this study,the three-line and two-tower straight section transmission tower-line system is taken as the engineering object of study,and the finite element simulation is applied to establish the wind resistance reliability analysis method of the transmission tower-line system based on probability density evolution.Firstly,the DR-SRM is used to simulate the fluctuating wind field of structures,and a representative sample set of wind load is generated.Then,combined with PDEM theory,the stochastic dynamic response of the transmission tower line system considering aeroelastic effect is analyzed.Finally,the equivalent extreme value idea is applied to construct the failure criteria of the transmission tower line system under wind load,and then the wind resistance reliability of the transmission tower line system is analyzed in detail.In this paper,by combining DR-SRM and PDEM theory,the wind resistance reliability of structures can be precisely analyzed with only a small number of representative samples,which provides a reference for engineering practice. |
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