精品文档---下载后可任意编辑1.1 Scope of ApplicationThis Standard applies to the structural design of steel buildings. TheStandard, however, need not apply to structural designs based on specialresearch studies.1.2 Structural Safety Verification TestsWhere a design in involvesconnection and other structural details notexpressly prescribed in this Standard, the structural safe& of such detailsshall be proved by tests or by other appropriate means.1.3 Enlargement of SectionSections of various structural elements shall be enlarged as required,with due consideration for practical limitation in precision of structural designs, inadequacy in constructional workmanship, and such adversefactors as rusting, corrosion and wear of steel materials.1.4 NomenclatureAGross sectional area; nominal body area of a high-strength bolt; or sumof sectional areas of column components (mm2)ANNet section (mm2)AdSectional area of lacing element; or total sectional area of a pair oflacing elements in the case of double lacing (mm2)AfCross-sectional area of compression flange; or cross-sectional area ofeither flange (mm2)ApSectional area of parts in contact (mm2)AsCross-sectional area of vertical or horizontal stiffeners (mm2)AwCross-sectional area of web plate (mm2)aEquivalent area loss due to rivet, bolt or high-strength bolt holes(mm2);or spacing of intermediate stiffeners (mm)a0Net area loss due to rivet, bolt or high-strength bolt holes (mm2)bWidth of compression element free at one edge and fixed at the other;width of rocker or roller; or longitudinal spacing or pitch of consecutiveholes (mm)C=1.75−1.05(M 2M 1)+0.3(M 2M 1)2Bending coefficient dependent upon moment gradientDNominal outside diameter of steel pipe; or outside diameter of main steel pipe (mm)d...
