The flow fields generated by stationary and travelling downbursts and resultant wind load effects on transmission line structural system

Under the typhoon disaster, the power grid often has serious accidents caused by falling power towers and breaking lines. It is of great significance to analyze and predict the damage probability of a transmission line-tower system for disaster prevention and reduction. However, some problems existing in current models, such as complicated calculation, few factors, and so on, affect the accuracy of the prediction. Therefore, a damage probability assessment method of a transmission line-tower system under a typhoon disaster is proposed. Firstly, considering the actual wind load and the design wind load, physical models for calculating the damage probability of the transmission line and power tower are established, respectively based on model-driven thought. Then, the damage probability of the transmission line-tower system is obtained, combining the transmission line and power tower damage probability. Secondly, in order to improve prediction accuracy, this paper analyzes the historical sample data containing multiple influencing factors, such as geographic information, meteorological information, and power grid information, and then obtains the correction coefficient based on data-driven thought. Thirdly, the comprehensive damage probability of the transmission line-tower system is calculated considering the results of model-driven and data-driven thought. Ultimately, the proposed method is verified to be effective, taking typhoon ‘Mangkhut’ in 2018 as a case study.

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Wind Load Effects on Manufactured Home Foundations

American Journal of Engineering and Applied Sciences ◽

10.3844/ajeassp.2011.548.555 ◽

2011 ◽

Vol 4 (4) ◽

pp. 548-555

Author(s):

Qimin

Keyword(s):

Wind Load ◽

Load Effects

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Refined Process Upcrossing Rate Approach for Estimating Probabilistic Wind Load Effects with Consideration of Directionality

Journal of Structural Engineering ◽

10.1061/(asce)st.1943-541x.0001625 ◽

2017 ◽

Vol 143 (1) ◽

pp. 04016148 ◽

Cited By ~ 1

Author(s):

Xinxin Zhang ◽

Xinzhong Chen

Keyword(s):

Wind Load ◽

Load Effects

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Study on a Large-Span Steel Truss Roof Isolation Bearings for Wind Load Effect Isolation Effect

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.405-408.1022 ◽

2013 ◽

Vol 405-408 ◽

pp. 1022-1027

Author(s):

Zi Fen Fang ◽

Zhi Qiang Zhang ◽

Fei Liu

Keyword(s):

Financial Services ◽

Base Isolation ◽

Wind Load ◽

Isolation Effect ◽

Load Effect ◽

Large Span ◽

Roof Structure ◽

Rubber Bearing ◽

Steel Truss ◽

Load Effects

The isolation of large-span Steel Truss Roof structure is developed on the basis of base isolation. The isolation of large-span Steel Truss Roof structure is to limit the transmission of wind load effect to the substructure. Based on the engineering background, we mainly discuss using rubber bearing isolation structure wind load effects. This paper will explains and demonstrates the isolation mechanism of Large-span Steel Truss Structure,and than test and verify isolation effect by Calculating through the analysis of wind tunnel tests conducted on the Yancheng financial services center, which the steel truss roof isolation bearings for wind load effect isolation effect.

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