蒋首超1，毛龙1，何志力2

（1 同济大学土木工程学院， 上海 200092； 2 CCDI悉地国际， 深圳 518057）

 

［摘要］为了研究火灾下铝合金轴心受压构件的稳定承载能力，在不同温度下，进行了14个矩形截面铝合金挤压型材试件的轴心受压试验。试验均为恒温加载，试验过程中保持温度不变，荷载持续增加，直至达到构件的极限承载力。全部试件都发生了整体弯曲失稳。对试验结果进行了分析，并将试验结果与中国和欧洲铝合金结构设计规范进行了比较。结果表明：在常温下，两种规范给出的结果与试验结果吻合较好；在高温下，欧洲规范结果与试验结果相差较大。

［关键词］高温； 轴心受压构件； 铝合金

中图分类号：TU395      文献标识码：A       文章编号：1002-848X(2013)16-0093-04

 

Jiang Shouchao1, Mao Long1, He Zhili2

（1 College of Civil Engineering, Tongji University, Shanghai 200092, China; 2 CCDI GROUP, Shenzhen 518057, China）

 

Abstract: In order to investigate the buckling resistance of axially loaded aluminum members under fire condition, axial compression tests were carried out on a total of 14 extruded rectangular cross-section aluminum members at different temperatures. During the tests, each specimen was loaded to collapse at a given temperature. All of the specimens failed by global flexural buckling. A comparative analysis had been conducted between the experimental results and the design results predicted by Code for design of aluminum structures（GB 50429—2007）and Eurocode 9. It is demonstrated that the design results of the both codes show good agreement with the test results at ambient temperature, while at elevated temperatures Eurocode 9 gives considerably different results in comparison with experimental data.

Keywords: elevated temperature; axial compression member; aluminum alloy

*科技部国家重点实验室基础研究资助项目(SLDRCE08-C-04)，国家自然科学基金面上项目(50978205)。

作者简介：蒋首超，博士，副教授，Email: scjiang@tongji.edu.cn。

 

［1］ECCS European recommendations for aluminium alloys structures［S］. European Convention for Constructional Steelwork, 1978.

［2］GB 50429—2007 铝合金结构设计规范［S］. 北京: 中国计划出版社, 2007.

［3］GB/T 228-1—2010 金属材料 拉伸试验 第1部分：室温试验方法［S］. 北京: 中国标准出版社, 2010.

［4］EN 1999-1-1 Eurocode 9: design of aluminium structures—part 1-1: general structural rules［S］. Lodon: European Committee for Standardization, 2007.

［5］EN 1999-1-2 Eurocode 9: design of aluminium structures—part 1-2: general rules—structural fire design［S］. Lodon: European Committee for Standardization, 2007.

［6］陈骥. 钢结构稳定理论与设计［M］. 2版. 北京: 科学出版社, 2003.

［7］SOUTHWELL R V. On the analysis of experimental observations in problems of elastic stability［C］//Proceeding of the Royal Society of London. 1932: 601-616.