By investigating torque on rectangular cylinders with various side ratios and aspect ratios at normal attack angle in a boundary layer wind tunnel, this paper presents empirical formula of torque spectra, RMS torque coefficients and Strouhal numbers of rectangular tall buildings, and coherence functions of torque are also studied.
本文通过研究不同长宽比、高宽比的矩形棱柱体在边界层风洞中典型攻角下的扭矩,提出了矩形高层建筑扭矩功率谱密度、均方根扭矩系数和Strouhal数的经验公式,并对相干函数作了一定的探讨,建立了完整的扭转动力风荷载解析模型。
The torque coefficient and antislide coefficient is important evaluation parameter of the performance class of high strength bolt.
扭矩系数及抗滑移系数是评定高强度螺栓性能级别的重要参数。
In this paper all experimental results of the torsion moment coefficients of high strength bolts with two kinds diameters,M27 and M24,and different plate combinations are presented.
扭矩系数是高强度螺栓扭矩法施工的关键参数。