（1 北京市建筑设计研究院有限公司， 北京 100045； 2 清华大学土木工程系，

北京 100084；3 上海通正铝业工程技术有限公司， 上海 201103）

［摘要］在主流的铝合金结构设计规范中，受压板件局部稳定承载力的计算方法主要有以下几类：有效截面法、许用应力法、抗力系数设计法/极限状态设计法。现有的研究成果表明，这些计算方法均低估了非加劲板件的承载力、高估了加劲板件的承载力，导致计算结果不准确。对266个十字形截面、259个箱形截面和168个工字形截面短柱进行有限元分析，并考虑了现有的71组试验结果，给出不考虑板件间相互作用的有效厚度计算公式。研究结果表明，给出的建议公式能够较准确地计算板件的有效厚度，可以应用在工程设计中。

［关键词］铝合金；  轴心受压构件； 局部稳定性； 有效截面法； 有限元分析

中图分类号：TU395文献标识码：A文章编号：1002-848X(2015)11-0032-05

Local buckling design on aluminum alloy members under axial compression

Chang Ting1, Wang Yuanqing2, Shi Yongjiu2, Yuan Huanxin2,

Yin Jian3,

Ouyang Yuanwen3, Song Keyu3

(1 Beijing Institute of Architectural Design, Beijing 100045, China; 2  Department of Civil Engineering,

 Tsinghua

University, Beijing 100084, China; 

3 Shanghai Tongzheng Aluminium Engineering Co., Ltd., Shanghai 201103, China)

Abstract:In current design specifications on aluminum alloy structures, there are several methods for calculating local buckling bearing capacity of compressive plates: effective section method, allowable stress method and resistance factor design method/limit state design method. The existing researches show that the above methods have underestimated the bearing capacity of unstiffened plates and overestimated the bearing capacity of stiffened plates, which lead to inaccurate results. Finite element analysis was conducted to study the ultimate bearing capacity of stub columns, including 266 cruciform sections, 259 box sections, 168 I sections and 71 groups of test results. Effective thickness calculation formulas were given which interactions between plates were not considered. The results show that, the proposed calculation formulas give accurate results for calculating the effective thickness of the compressive plates which can be used in engineering design.

Keywords:aluminum alloy; axial compressive plates; local buckling; effective section method; finite element analysis

*高等学校博士学科点专项科研基金(20110002130002)。

作者简介：常婷，硕士，Email：changting59030@163.com。

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