Davenport谱中系数K的计算公式及其工程应用

Formula of Coefficient K in Expression of Davenport Spectrum and Its Engineering Application

随着计算技术的发展 ,求解结构响应的时程分析法愈来愈受到重视 .根据随机振动理论和我国风荷载规范 ,导出了Davenport谱中系数K的计算公式 ,确立了系数K与地面粗糙度指数之间的关系 ;保证了结构风响应时域解的规范性和可靠性 ,为时程分析法在风工程中的应用提供了极大的方便 .

The interest in the time-domain calculations of structural response has intensified with the progress of computational techniques.Based on the theory of stochastic vibration and the Chinese wind loading codes,the coefficient K in the expression of Davenport spectrum is formularized in this paper.The establishment of the relation between coefficient K and Roughness exponent assures the reliability and normalization of the structural response to wind excitation calculated by time-domain method,which provides the application of the time-domain method to wind engineering with great convenience.