截面分类是运用欧洲规范进行钢桥或钢-混凝土组合梁桥设计的重要部分。介绍欧洲规范截面分类的原则、方法,给出Loukouni大桥及Djoué大桥的设计过程中截面分类的示例,并对截面分类的目的进行探讨。有助于工程技术人员理解欧洲规范截面分类的内容,从而熟练地运用欧洲规范进行钢桥及钢-混凝土组合梁桥的设计。 Section classification is the use of European norms for steel or steel-concrete composite beam bridge design an important part. This paper introduces the principle and method of section classification in European norms, gives examples of section classification in the design of Loukouni Bridge and Djoué Bridge, and discusses the purpose of section classification. Helps engineers to understand the European classification of cross-sectional content, so proficient use of European norms steel and steel-concrete composite beam bridge design.