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THEORETICAL RESEARCH ON THE MODIFIED COEFFICIENT OF ALUMINUM ALLOY BEAM-COLUMNS OF SINGLE SYMMETRIC SECTIONS
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摘要: 对单轴对称截面铝合金挤压型材压弯构件的平面内稳定承载力进行了数值分析,通过参数分析推算了其受拉屈服验算公式中的修正系数2,建议2对弱硬化合金取1.15、对强硬化合金取1.25,这样可使相关公式的计算结果较为合理地满足设计要求。Abstract: Numerical analysis was executed to study the in-plane stability capacity of extruded aluminium alloy beam-columns of single symmetric sections,and a modified coefficient _2 in the interaction expression was calculated by parameter analysis.Based on above analysis,_2 was proposed to be 1.15 for weak hardening alloy and 1.25 for strong hardening alloy,which have been verified by comparison with numerical calculation results.
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Aluminum Association.Specification for Aluminum Structures(First Edition).Washington,DC:1976 [2] ECCS.European Recommendations for Aluminum Alloy Structures(First Edition).London:1978 [3] 张铮,张其林.H形截面铝合金压弯构件平面内稳定承载力的试验及理论研究.建筑结构学报,2006,27(5):9-15 [4] 金鑫.单轴对称截面铝合金压杆极限承载力研究:[博士学位论文].上海:同济大学,2005 [5] 吴亚舸.铝合金受压板件局部屈曲与受弯构件弯扭屈曲承载力研究:[博士学位论文].上海:同济大学,2005 [6] GB 50017-2003 钢结构设计规范 [7] Federico M M.Aluminium Alloy Structures(Second Edition).London:Chapman Hall,1995 [8] CEN.prEN1999-1-1:Design of Aluminium Structures-General Structural Rules.2002 -
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