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采用桁架梁的刚构比铰接排架具有较大的劲度和抗震性能,常为设计者所注意。目前对桁架刚构的理论研究和提供计算方法已有很多,但在实际应用中采用这些方法计算,不免带来许多烦琐的运算。本文对几种常用的矩形和梯形桁架提供计算角变形常数和劲度的近似公式与计算图表,又在理论上探讨了桁架梁的弦杆与腹杆的相互关系,提供明确的分析角变形常数的方法。
Rigid-frame articulated trusses with trussed beams have greater stiffness and seismic performance and are often noticed by designers. At present, there are many theoretical researches and computation methods for the truss rigid structures, but the calculations using these methods in practical applications inevitably bring about many tedious operations. In this paper, some commonly used rectangular and trapezoidal trusses are provided with approximate formulas and calculation diagrams for calculating the angular deformation constants and stiffness, and the relationship between the chords and the webs of the lattice girders is theoretically discussed, and a clear analysis of the angular deformation constants is provided. Methods.