RESEARCH ADVANCES IN STABILITY OF STAINLESS STEEL STRUCTURAL MEMBERS
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摘要: 不锈钢结构具有优良的耐腐蚀性能和耐久性能,可以从根本上解决普通钢结构的锈蚀问题,能够延长结构的使用寿命,降低维护成本。不锈钢材料的非线性应力-应变关系特性会导致构件的后期刚度降低,同时由于不锈钢材料单价较高,需要更为经济合理的截面设计,因此构件的稳定性需要特别关注。对当前国内外不锈钢结构构件稳定性研究的现状及进展进行总结,比较分析国外现行不锈钢结构设计规范中关于构件稳定性的设计思路与方法;针对国内不锈钢结构设计方法的空白,在总结当前国内外研究进展与国外现行设计规范的基础上提出相关意见和建议。Abstract: Stainless steels have unique properties such as favorable corrosion resistance and durability,which could be a satisfactory solution to the corrosion problem of ordinary steel structures.Naturally,service lives of structures are able to get prolonged while the maintenance cost can be reduced provided that stainless steel structural members are adopted in building structures.On account of nonlinear material properties,the stiffness of stainless steel structural members would degenerate with the growth of stresses.Meanwhile,high material cost necessitates more economic design comparing with ordinary steel structures.Consequently,special attention should be paid to the stability of stainless steel structural members.This paper presents status quo and advances of stability research on stainless steel structural members,and analyzes current design provisions in foreign countries.Based upon the recent research and design development,recommendations are made on related research activities regarding the deficiency of experimental results and design provisions in China.
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Key words:
- stainless steel /
- building structure /
- stability /
- local buckling /
- overall buckling /
- interactive buckling
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