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本文在文献[1、2]所提出的桁梁桥弹性及弹塑性侧倾稳定分析理论的基础上,针对更一般的梯形桁梁桥,建立了新的斜桥门架节间侧倾稳定分析力学模型,提出了一种新的梯形桁梁桥侧倾稳定分析方法,对梯形桁粱桥的弹塑性侧倾稳定特性作了深入的分析研究,并与精确的空间杆系方法等进行了比较。结果表明,本文方法不仅具有很好的精度,而且计算速度快,数据输入简便。本文方法还适用于上承式矩形桁梁桥。
Based on the theory of elasticity and elasto-plastic stability analysis of truss girder bridge proposed in [1] and [2], a new stability analysis of inland truss girder bridges with a more general trapezoidal truss girder bridge is established Mechanics model, a new roll stability analysis method for trapezoidal truss girder bridges was proposed. The elastoplastic roll stability characteristics of the trapezoidal truss bridge were analyzed in depth and compared with the accurate method . The results show that this method not only has good accuracy, but also has the advantages of fast calculation speed and simple data input. The method of this article is also applicable to the over-standing rectangular truss girder bridge.