Local-distortional Interactive Buckling of Thin-walled Aluminum Alloy Axial Compression Member with Irregular-shaped Cross Section at Elevated Temperatures

刘梅; 常熤存; 刘昌斌

doi:10.13409/j.cnki.jdpme.2016.03.009

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Local-distortional Interactive Buckling of Thin-walled Aluminum Alloy Axial Compression Member with Irregular-shaped Cross Section at Elevated Temperatures

更新时间：2025-12-11

- Local-distortional Interactive Buckling of Thin-walled Aluminum Alloy Axial Compression Member with Irregular-shaped Cross Section at Elevated Temperatures
- Vol. 36, Issue 3, Pages: 380-385(2016)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2016.03.009
  CLC： U392.1
- Published：2016
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[1]刘梅,常熤存,刘昌斌.高温下异形截面薄壁铝合金轴压构件局部-畸变屈曲耦合分析[J].防灾减灾工程学报,2016,36(03):380-385.

刘梅, 常熤存, 刘昌斌. Local-distortional Interactive Buckling of Thin-walled Aluminum Alloy Axial Compression Member with Irregular-shaped Cross Section at Elevated Temperatures[J]. 2016, 36(3): 380-385.
[1]刘梅,常熤存,刘昌斌.高温下异形截面薄壁铝合金轴压构件局部-畸变屈曲耦合分析[J].防灾减灾工程学报,2016,36(03):380-385. DOI： 10.13409/j.cnki.jdpme.2016.03.009.

刘梅, 常熤存, 刘昌斌. Local-distortional Interactive Buckling of Thin-walled Aluminum Alloy Axial Compression Member with Irregular-shaped Cross Section at Elevated Temperatures[J]. 2016, 36(3): 380-385. DOI： 10.13409/j.cnki.jdpme.2016.03.009.

摘要

火灾高温下铝合金材料的强度和弹性模量衰减迅速

导致高温下异形截面薄壁铝合金轴压构件的屈曲破坏模式更加复杂。采用有限元恒温加载方法

分析了6082-T6铝合金轴压构件的板件变形和跨中截面应力发展

研究了异形截面铝合金轴压构件常温下和火灾下的局部-畸变屈曲耦合破坏机理和屈曲承载力。高温下铝合金强度和弹性模量的折减系数采用欧洲铝合金结构设计规范EN1999-1-2的规定。对比不同温度下6082-T6异形截面铝合金轴压构件的极限承载力的有限元分析结果与EN1999-1-2计算结果表明

EN1999-1-2的设计方法较为保守。

Abstract

The yield strength and Young’s modulus of aluminum alloy decrease rapidly with the temperatures in a fire

which makes the failure modes of thin-walled aluminum alloy axial compression member with irregular section more complicated.By using the finite element method

deformation shape along the member and stress evolution at the mid-span cross section of the axially loaded aluminum alloy member at a given high temperature were presented.Interactions of local-distortional buckling modes were illustrated by deformation shape and stress evolution curves.Degradation of yield strength and Young’s modulus of aluminum alloy adopted the description of EN1999-1-2.Ultimate strengths of aluminum alloy members at high temperatures obtained from finite element analysis were compared with the design code of EN1999-1-2.Comparison results show that the design code is rather conservative.

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references

火灾下铝合金方管柱的升温 [J]. 郑永乾,陈志波,张铮. 消防科学与技术 . 2014(09)

高温下铝合金轴心受压构件试验研究 [J]. 蒋首超,毛龙,何志力. 建筑结构 . 2013(16)

建筑用6061-T6系铝合金高温下力学性能试验研究 [J]. 彭航,蒋首超,赵媛媛. 土木工程学报 . 2009(07)

GB 50429-2007. 铝合金结构设计规范 [S]. 2007

Stability of 6082-T6 aluminium alloy columns with H-section and rectangular hollow sections [J] . Guy Oyeniran Adeoti,Feng Fan,Yujin Wang,Ximei Zhai. Thin-Walled Structures . 2014

Review: The Direct Strength Method of cold-formed steel member design [J] . B.W. Schafer. Journal of Constructional Steel Research . 2008 (7)

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