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以梁杆单元为主体的钢桥传统计算分析方法存在不能准确反映桁架杆件之间和杆件与桥面之间的连接性能，忽略桁架杆件横向尺寸效应等问题。文中提出了全桥全壳空间计算模型，并应用于单片结构桥梁方案的全桥空间计算中。该模型具有通用性，文中的研究有益于寻找钢桥结构行为的仿真分析途径、准确计算具有结构缺陷的现有钢桥的承载能力、真正连接钢桥图形系统与结构分析系统、探索大跨柔性钢桥的结构分析新方法等
The traditional calculation and analysis methods of the steel bridge with the beam as the main body can not accurately reflect the connection performance between the truss members and between the members and the bridge deck and neglect the transverse size effect of the truss members. In this paper, the full-shell full-shell space calculation model is proposed and applied to the full-bridge space calculation of the bridge structure with monolithic structure. This model is universal. The research in this paper is helpful to find the way of simulation analysis of steel bridge structure behavior, to accurately calculate the bearing capacity of the existing steel bridge with structural defects, to truly connect steel bridge graphic system and structural analysis system, Steel Bridge structural analysis of new methods