摘要
对于采用Davenport风谱作为脉动风荷载功率谱密度函数的结构风振计算,建立一种适合高精度数值积分的计算格式,采用高精度的龙贝格求积法计算结构顺风向风振响应的数值解,并认为此解可以作为理论解的良好逼近;以本文的数值积分解作为比较依据,检验了基于背景分量共振分量的结构风振计算方法的精确度和适用性。
A kind of formula suitable for high resolution numerical integration were established and Romberg integration method with high resolution was adopted to obtain the numerical solutions for wind induced structural vibration analysis, in which Davenport wind speed spectrum was adopted as the power spectrum density function of fluctuating wind load. This solution was regarded as an asymptotic solution of the analytical solution of the problem under discussion. With the help of the numerical integration solution obtained herein, the precision and applicability of the wind induced structural vibration analysis method based on background and resonance component was examined.
出处
《力学季刊》
CSCD
北大核心
2006年第1期162-167,共6页
Chinese Quarterly of Mechanics
关键词
结构风振
数值积分
背景分量共振分量
wind induced structural vibration
numerical integrations background component and resonant component
