通过对比交通部标准JTJ025—86《公路桥涵钢结构及木结构设计规范》、行业标准TB10002.2—2005《铁路桥梁钢结构设计规范》与国家标准GB50017—2003《钢结构设计规范》的主要条文，研究了公路、铁路行业桥梁钢结构与房建钢结构在设计准则、所用钢材牌号及材料属性、设计荷载、主要计算公式等方面的异同，重点分析了三种规范材料强度取值、构件强度、稳定性和疲劳验算存在差异的原因，客观评价了公路、铁路钢结构规范主要验算公式的合理性；研究成果对工程设计人员深入理解公路、铁路桥梁钢结构设计规范，掌握钢桥设计的精髓有实用价值。

Through the comparison with main contents among JTJ025—86 Standard for Design of Steel Structure and Timber Structure Highway Bridges and Culverts , TB10002.2—2005 Code for Design on Steel Structures of Railway Bridge and GB50017—2003 Code for Design of Steel Structures, the similarities and differences of design criteria, the steel grades and material properties, design load, the main calculation formula and so on between highway, railway steel bridge codes and building steel structure specifications are researched, then the reasons for the differences in the material strength values, structural strength, stability and fatigue checking between the three kinds of specifications are analyzed particularly, and the rationality of main checking formula in highway, railway steel bridge specifications is evaluated objectively. For the project planners, the research is of practical value to comprehend the design code of steel structure in rail road bridge and grasp the essence of steel structure design.

河南大学教学改革研究项目