斜拉索上瞬时风速与风荷载的数值模拟

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (7) : 210-212.

论文

斜拉索上瞬时风速与风荷载的数值模拟

方治华;李晨

作者信息 +

Numerical simulation of instantaneous wind speed and wind load on the stayed cable

FANG Zhi-hua; LI Chen

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文章历史 +

摘要

基于线性自回归模型法，确定了随时间和高度变化的脉动风模拟方法，编制了瞬时风速和风荷载模拟程序。将此方法应用到斜拉索结构，对苏通大桥Z34号拉索表面的风速、风荷载进行模拟。对所得脉动风时程进行谱分析和数理统计分析。结果表明，模拟点处模拟谱与目标谱吻合较好，证明了模拟结果的准确性。

Abstract

Based on linear autoregressive model, identified simulation of fluctuating wind changed with time and height, compiled instantaneous wind speed and wind load procedures. The method is extended to cable-stayed structure and simulated wind speed and wind pressure of A34 cable on the SU-TONG stayed cable bridge. Analyzed the fluctuating wind time history used Spectrum Analysis and Mathematical Statistics. The results showed that simulated spectrum is good agreement with target spectrum and proved the accuracy of procedures.

导出引用

方治华;李晨 . 斜拉索上瞬时风速与风荷载的数值模拟[J]. 振动与冲击, 2010, 29(7): 210-212

FANG Zhi-hua;LI Chen. Numerical simulation of instantaneous wind speed and wind load on the stayed cable[J]. Journal of Vibration and Shock, 2010, 29(7): 210-212