基于有限样本的高层建筑横风向风振极值响应估计方法
By using a generalized Van der Pol aerodynamic damping model and a linear extrapolation strategy based on the average exceedance rate, the problem of accurately estimating the extreme response of crosswind vibration in high-rise buildings was solved, achieving robust estimation results under finite sample conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2023-04-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to accurately estimate the extreme crosswind response of high-rise buildings under limited sample conditions, especially for generalized Van der Pol type nonlinear dynamic systems. The performance of the linear extrapolation strategy between the logarithm of the mean exceedance rate and the response PDF has not been effectively evaluated.
Monte Carlo simulation was performed using the generalized Van der Pol aerodynamic damping model. The extreme value distribution was estimated by formula (6) using the linear extrapolation strategy of the average exceedance rate. The influence of narrowband feathering on the exceedance rate was ignored, and the extreme value response was estimated using the B exceedance rate.
With a limited sample size, a robust estimate of the extreme response of crosswind vibration in high-rise buildings is provided, which improves the ability to capture rare events and ensures the accuracy and stability of the extreme response.
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Figure CN116522443B_ABST