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本文建立了钢桁梁桥的平面桁架计算模型与空间刚架计算模型，运用于空间迭代法求得竖向、横向基本周期，以丰准线黄河大桥为例提出了预测铜桁梁桥悬拼过程中人体对振动感觉的分析方法，这一方法可用于评价、改进钢桁梁桥的悬拼方案，指导安全施工。
In this paper, the calculation model of truss girder bridge truss truss and the calculation model of space truss frame are established, and the vertical and horizontal basic cycles are obtained by the iterative method of space truss. Taking the Huanghe River Bridge as an example, This method can be used to evaluate and improve the suspended truss project of steel truss girder bridge to guide the safe construction.