寒区低温下铝管短柱轴压性能研究

贾兴明; 严加宝

doi:10.3724/j.gyjzG23071905

寒区低温下铝管短柱轴压性能研究

doi: 10.3724/j.gyjzG23071905

贾兴明¹,
严加宝^2, ,

1. 杭州萧山经济技术开发区国有资本控股集团有限公司, 杭州 311215;
2. 天津大学建筑工程学院, 天津 300350

基金项目:

中国地震局地震工程与工程振动重点实验室重点专项（2019EEEVL0504）。

详细信息

作者简介:
贾兴明，高级工程师，353854769@qq.com。

通讯作者:
严加宝，工学博士，教授，主要从事组合结构领域研究，ceeyanj@163.com。

计量
- 文章访问数: 23
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- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2023-07-19
- 网络出版日期: 2025-11-05

Axial Compression Behaviors of Aluminum Tubular Stub Columns in Low Temperature in Cold-Region

JIA Xingming¹,
YAN Jiabao^{2
, ,}

1. Hangzhou Xiaoshan Economic-Technological Development Zone State-owned Capital Holding Group Co., Ltd, Hangzhou 311215, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300350, China

摘要

摘要: 对12个普通铝管和加劲铝管短柱开展低温轴压试验，研究其在低温环境轴压下的破坏形态、荷载-位移曲线、荷载-应变曲线、强度、刚度及延性系数等性能指标，分析低温水平（20、-30、-60 ℃）及铝管内壁加劲对铝管短柱轴压性能的影响。结果表明：普通铝管短柱的破坏形态为端部“象足”屈曲，而加劲铝管短柱的破坏形态则为铝管腰部的局部鼓曲，加劲肋失稳而破坏。低温下铝管短柱的荷载-位移曲线与常温下相似，包括弹性、非线性段以及退化段。低温提高了铝合金短柱的强度并削弱了其延性，但对初始刚度的影响并不显著。铝管内壁加肋对荷载-位移曲线影响显著，主要表现为强度的提高以及延性的大幅改善。最后，基于欧规Eurocode 3 《Design of Steel Structures-Part 1.4： General Rules-Supplementary Rules for Stainless Steels》、美规AISC 360-22 《Specification for Structural Steel Buildings》以及国标GB 50017—2017 《钢结构设计标准》，对铝管短柱受压承载力计算方法进行了对比分析，结果表明，欧规和国标承载力设计算式的计算值偏大，偏于不安全，而美规较为保守且与试验值最为接近。
- 铝合金管 /
- 寒区结构 /
- 轴压试验 /
- 承载能力
Abstract: In this paper， 12 ordinary aluminum tube and stiffened aluminum tube stub columns were tested under axial compression at low temperature to study their performance indicators， such as axial compression failure mode， load displacement curve， load strain curve， strength， stiffness and ductility coefficient under low temperature， and analyze the impact of low temperature level （20，-30，-60 ℃） and aluminum tube inner wall stiffening on axial compression performance of aluminum tube stub columns. The results showed that the failure mode of the ordinary aluminum tubular short column was elephant foot buckling at the end， while the failure mode of a stiffened aluminum tubular short column was local buckling at the waist of the aluminum tube and failure due to instability of the stiffening rib. The load displacement curves of aluminum tubular short columns at low temperatures were similar to those at normal temperatures， including elastic， nonlinear and degenerate sections. Low temperature improved the strength and weakens the ductility of aluminum alloy short columns， but had no significant effect on the initial stiffness. The stiffening of the inner wall of the aluminum tube had a significant effect on the load displacement curve， which was mainly reflected in the improvement of strength and ductility. Finally， based on Eurocode 3“Design of Steel Structures-Part 1.4： General Rules-Supplementary Rules for Stainless Steels”， American code AISC 360-22 “Specification for Structural Steel Buildings”and Chinese code GB 50017—2017“Standard for Steel Structure Design”， the calculation methods of compression bearing capacity of aluminum tubular short columns were compared and analyzed. The results showed that the calculated values of the bearing capacity design formulas of Eurocode 3 and Chinese code were too large and tend to be unsafe， while the American code was relatively conservative and most close to the test values.
- aluminum tubular stub /
- low temperature /
- axial compressive test /
- carrying capacity

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