笔者为此从随机振动理论出发，对点支式幕墙支撑结构的风振系数进行了研究。
Based on random vibration theory, the response of the structure under random wind load and the formula of wind vibration factor was developed.
根据风洞试验的结果计算站房及站台雨棚的体型系数、站台雨棚的位移风振系数；
Then calculating the shape coefficients of the station room and platform canopy and the wind vibration coefficients of the platform canopy on the basis of the wind-tunnel test;
大跨索网结构广泛应用于工程实际，该结构的风振系数是结构抗风设计的重要参数。
The long-span cable nets structures are being widely used in practical engineering, and the wind-induced coefficient is important for the design of the structures.
对点支式玻璃幕墙两端固支支撑结构和不落地支撑结构的风振系数取值问题进行了研究。
The calculation of the gust response factor of the point-supporting curtain wall's supporting structures which are fixed-supported and not on the ground, is analyzed.
同时，计算出了两种体系的位移风振系数，比较分析了等效静力法和时程分析法的计算结果。
In addition, this paper also calculates the displacement wind vibration of two systems, and compares the result of the equivalent static force method and the time domain analysis method.
还计算了屋盖结构的分区整体风振系数，确定了屋盖考虑风振系数的正负风压的控制风向角。
Finally the divisional wind-induced dynamic factors are computed, and the dominating wind angles of positive and negative wind pressures involving wind dynamic factors are determined.
生成了若干关键点的功率谱密度(PSD)和响应的均方值，以及荷载风振系数、位移风振系数。
As a result, some parameters of the key points have been got including the power spectrum density (PSD), the response variance, the gust response factor for load and displacement.
屋面刚度及来流风速对大跨度平屋面的竖向风振响应影响比较大，但对位移风振系数的影响不太明显；
The influences of roof stiffness and wind velocity on wind-induced dynamic response are considerably large, while the influences on wind load factor are slight.
因此虽然上述两种方法得到的风振系数沿高度分布差别较大，但均能实现烟囱的风振位移等效，均是合理的。
So the two methods can both acquire reasonable gust response factors and realize the displacements equivalence of chimney, though distributions of the gust response factors have great difference.
我国现在仍是采用高耸或高层结构的荷载规范，只取结构的第一阶频率计算风振系数，按此方法进行大跨空间网格结构的风振分析是很不合理的。
In China, the high rise structures load code is used for the large span spatial structures, only the first frequency is taken account for the wind vibration analysis, which is not reasonable.
风流经过大跨屋面时，由于气流分离在屋面的大部分区域产生强大的吸力，并引起柔性屋面结构的振动，因此大跨屋面结构抗风设计需考虑风振响应和风振系数。
The wind load has recently become a major concern in wind-resistant design of long-span roof structures due to their characteristics: light, flexible, lightly damped, low natural frequency and so on.
结果表明，结构阻尼比增大，风振脉动增大系数明显减小。
The results showed that the fluctuating amplifying coefficient evidently reduces with the increase of damping ratio.
为了选取大跨屋盖结构脉动风振响应的主导振型，提出了振型能量参与系数及其累积参与系数的计算方法。
The mode energy participation factor and the cumulated factor are presented in order to identify the dominant modes of fluctuating wind-induced response for a large-span roof.
对黏滞阻尼器阻尼系数进行了参数分析，得到黏滞阻尼器比较合理的阻尼系数，然而进行了弹塑性抗震时程分析和随机风振分析。
Coefficient parameters of viscous damper were analyzed, the rational parameters were proposed, and the elasticity-plastic anti-seismic time-history analysis and random wind vibration were performed.
静力三分力系数用于描述风对桥梁的静力作用，气动导数是颤振和抖振分析方法的核心。
Static coefficients are defined to describe the static effect of wind on bridge, and the aerodynamic derivatives are used to describe the aerodynamic effect.
静力三分力系数用于描述风对桥梁的静力作用，气动导数是颤振和抖振分析方法的核心。
Static coefficients are defined to describe the static effect of wind on bridge, and the aerodynamic derivatives are used to describe the aerodynamic effect.
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