《钢结构与钢-混凝土组合结构设计方法》的理解与应用——稳定和长细比
摘要：钢结构的稳定问题普遍存在于钢结构设计中，凡是钢结构的受压部位，在设计时都必须认真考虑其稳定性。根据《钢结构与钢-混凝土组合结构设计方法》,详细介绍了钢结构稳定验算的实质和注意事项，并结合钢结构稳定验算的实质，探讨了抗震构件和非抗震构件的容许长细比，给出了不同剩余抗弯能力比下的框架柱轴压比和长细比限值以及非抗震构件的容许长细比建议。最后介绍了《钢结构设计标准》(GB 50017—2017)关于钢支撑容许长细比的规定依据。
关键词：钢结构；稳定性；容许长细比；支撑；框架柱；
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[2] 童根树.钢结构与钢-混凝土组合结构设计方法[M].北京:中国建筑工业出版社,2022.
[3] 钢结构设计标准:GB 50017-2017[S].北京:中国建筑工业出版社,2018.
[4] 建筑抗震设计规范:GB 50011-2010[S].2016年版.北京:中国建筑工业出版社,2016.
[5] 童根树.钢结构的平面内稳定[M].北京:中国建筑工业出版社,2015.
[6] 高层民用建筑钢结构技术规程:JGJ 99-2015[S].北京:中国建筑工业出版社,2016.
[7] 陈绍蕃.钢构件容许长细比刍议[J].建筑结构,2009,39(2):113-115,60.
[8] 黄卓驹,项圣懿,王松林,等.关于杆系钢结构稳定设计的若干问题讨论[J].建筑结构,2021,51 (S1):1474-1478.
[9] Specification for structural steel building:ANSI/AISC360-05[S].Chicago,Illinois:American Institute of Steel Construction,2005.
[10] CHEN S F,SU M Z.Out-of-plane buckling and bracing requirement in double-angle trusses[J].Steel and Composite Structures,2003,3(4):261-275.
Understanding and application of Design method for steel strutures and steel-concretecombined structures:stability and slenderness ratio
Abstract: Steel structural stability issues are prevalent in the design of steel structures. For any compression part of the steel structure, its stability must be carefully considered in the design. According to the Design method for steel structures and steel-concrete combined structures, the essence and matters needing attention in the stability verifying of steel structure were introduced in detail, combined with the essence of steel structure stability verifying, the allowable slenderness ratio of seismic components and non-seismic components were investigated, suggestions were made for axial compression ratio limit and slenderness ratio limit of frame column under different residual bending capacity ratio and allowable slenderness ratio of non-seismic components. Finally, the basis for the allowable slenderness ratio of steel bracing in Standards for design of steel structures(GB 50017—2017)was introduced.
Keywords: steel structure; stability; allowable slenderness ratio; bracing; frame column
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