Local buckling response and design of stainless steel hollow sections at elevated temperatures

Local buckling response and design of stainless steel hollow sections at elevated temperatures
复制标题

高温下不锈钢空心型材的局部屈曲响应和设计

DOI:
10.1002/cepa.2325
复制
发表时间:
2023
期刊:
ce/papers
影响因子:
--
通讯作者:
Quan C
Quan C
中科院分区:
--
文献类型:
--
作者:
Quan C

文献摘要

参考文献

相似文献

本文探讨了不锈钢空心截面(1)圆形空心截面(CHS),(2)椭圆形空心截面(EHS),(3)方形空心截面(SHS)和(4)矩形空心截面(RHS)在火灾中的结构行为和设计。建立了不锈钢CHS、EHS、SHS和RHS的外壳有限元模型,能够复制其在高温下的结构响应。数值参数研究对冷成型和热轧奥氏体、双相和铁素体不锈钢CHS、EHS、SHS和RHS进行了(i)纯压缩,(ii)纯弯曲,(iii)轴向压缩和弯曲结合,以及(iv)火灾中弯曲和剪切结合,涵盖了不同的横截面长度和高温水平。根据数值参数研究获得的基准结构性能数据,提出了Quan和Kucukler[1,2]提出的预测不锈钢CHS、EHS、SHS和RHS在火灾中的极限抗力的新设计建议。结果表明,相对于欧洲结构钢防火设计标准EN 1993‐1‐2中提供的设计建议,所提出的截面设计方法为不锈钢高温下CHS、EHS、SHS和RHS提供了更准确、更安全的极限抗力预测。
The structural behaviour and design of stainless steel hollow sections in fire, including stainless steel (i) circular hollow sections (CHS), (ii) elliptical hollow sections (EHS), (iii) square hollow sections (SHS) and (iv) rectangular hollow sections (RHS), are explored in this paper. Shell finite element models of stainless steel CHS, EHS, SHS and RHS able to replicate their structural response at elevated temperatures are created. Numerical parametric studies are performed on cold‐formed and hot‐rolled austenitic, duplex and ferritic stainless steel CHS, EHS, SHS and RHS subjected to (i) pure compression, (ii) pure bending, (iii) combined axial compression and bending and (iv) combined bending and shear in fire, covering different cross‐section slendernesses and elevated temperature levels. Calibrated against the benchmark structural performance data obtained from the numerical parametric studies, the new design proposals for predicting the ultimate resistances of stainless steel CHS, EHS, SHS and RHS in fire put forward in Quan and Kucukler [1,2] are set out. It is demonstrated that relative to the design recommendations provided in the European structural steel fire design standard EN 1993‐1‐2, the proposed cross‐section design methods provide more accurate and safe‐sided ultimate resistance predictions for stainless steel CHS, EHS, SHS and RHS at elevated temperatures.
DOI: 10.1016/j.engstruct.2023.115996
发表时间: 2023
影响因子: 5.5
作者:
Quan C
通讯作者: Quan C
DOI: 10.1002/cepa.1442
发表时间: 2021
期刊: ce/papers
影响因子: --
作者:
F. Arrais;N. Lopes;P. Real
通讯作者: P. Real
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
Hideki Kozima;Yuriko Yasuda;Cocoro Nakagawa;Hideki Kozima;小嶋 秀樹;小嶋 秀樹;小嶋 秀樹
通讯作者: 小嶋 秀樹