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本文对横向加劲单曲悬索屋盖结构的模型进行了静力与动力试验研究,探求结构在预应力态和荷载态的位移和内力变化规律,以及结构在竖向振动时的动力特征。本文所述结构的特点是通过横向加劲构件端部支座的强迫位移,使结构建立预应力。文中叙述了各项荷载试验,并将实测值与理论值作了互相验证比较。对这种结构的静力特征、支座强迫位移的作用、索端支座刚度对结构的影响作了探讨。动力试验给出了结构的前五个自振频率与振型。这种结构已在二个工程上得到了应用。
In this paper, static and dynamic tests are conducted on the model of the laterally stiffened single-swing cable roof structure. The displacement and internal forces of the structure in the pre-stressed and loaded state are studied, and the dynamic characteristics of the structure in the vertical vibration are analyzed. The feature of the structure described herein is that the structure is prestressed by the forcible displacement of the end supports of the transverse stiffening members. The load tests are described in this paper and the actual and theoretical values are verified and compared with each other. The static characteristics of the structure, the effect of the forced displacement of the support, and the influence of the stiffness of the cable end support on the structure are discussed. The dynamic test gives the first five natural frequencies and modes of the structure. This structure has been applied in two projects.