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一、钢结构设计规范所列钢种钢号在修订《钢结构设计规范》时曾先后研究了美、英、法、德、意、奥、挪、加、日、罗、前苏等20几个国家的现行钢结构规范、规程和建议。在这些规范、规程、建议中,各国所列钢材的钢种、钢号、牌号虽然不同,但相应钢材的综合性能(包括冶炼工艺、轧制方法、化学成份、机械性能、加工制造等)差别不大,钢结构设计的强度指标也都在同一水平。各国的共同特点是: 1.生产工艺钢材(钢板、型钢、管材、棒材等)生产多采用平炉钢、转炉钢、电炉钢,且以纯氧顶吹转炉钢为主,平炉钢次之,电炉钢很少用于钢结构工程。同时,绝大部
First, steel design specifications listed in the steel grades in the revision of “Steel Design Code” has studied the United States, Britain, France, Germany, Italy, Austria, Norway, Canada, Japan, Romania, the Soviet Union and other 20 Current national steel structure codes, procedures and recommendations. Among the norms, rules and suggestions, the types, grades and grades of the steel products listed in each country are different, but the overall performance (including the smelting process, rolling method, chemical composition, mechanical properties, processing and manufacturing) of the corresponding steel products is different Small, steel design strength indicators are also at the same level. Common features of all countries are: 1. The production of steel (steel, steel, pipe, bar, etc.) the production of more use of open hearth steel, converter steel, electric furnace steel, and pure oxygen top blown converter steel, open hearth steel, electric furnace Steel is rarely used for structural steel works. At the same time, most of them