对全桥、横梁采用两次有限元离散计算方法，考虑桥面系、主桁架相互作用问题，研究了单线和双线钢桁梁桥的实际受力状态和设计者常采用的简化计算方法存在的问题，对《铁路桥跨结构设计规范》（初稿）中有关纵、横梁的计算条文提出了建议，它们对各类钢桁梁桥的设计均有参考价值 For the full-bridge and cross-beam, the finite element method is used twice, and the interaction between bridge deck and main truss is considered. The actual stress state of single-track and two-lane steel truss bridges and the simplified calculation methods commonly used by designers , Put forward suggestions on the calculation provisions of longitudinal and transverse beams in the “Code for Design of Railway Bridge Structures” (the first draft), which are of reference value to the design of all kinds of steel truss bridges