Behaviour and design of short high-strength steel welded box and concrete-filled tube (CFT) sections

被引:88
作者
Khan, M. [1 ]
Uy, B. [2 ]
Tao, Z. [3 ]
Mashiri, F. [3 ]
机构
[1] Univ New South Wales, Ctr Infrastruct Engn & Safety, Sydney, NSW 2052, Australia
[2] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia
[3] Western Sydney Univ, Inst Infrastruct Engn, Penrith, NSW 2751, Australia
基金
澳大利亚研究理事会;
关键词
High strength steel; High strength concrete; UT sections; Box sections; STUB COLUMNS; COMPRESSION;
D O I
10.1016/j.engstruct.2017.06.016
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper presents an experimental investigation on the ultimate strength of short welded box (HS) and CFT sections (CB) fabricated from high strength steel (HSS) and filled with high strength concrete (HSC). This paper additionally presents experimental data on steel only loaded sections (CS) and concrete only loaded sections (CC). Forty-five test specimens having width to thickness ratios (b/t) ranging from 15 to 40 and length to width ratios (L/b) ranging from 3.5 to 5 were tested. Finite element modelling (FEM) of the test specimens (HS, CS and CB) was verified with the experimental results. The FEM was used to investigate the effect of induced residual stresses on the ultimate strengths for lightly and heavily welded box sections. Furthermore, FEM of the test specimens (CB) was used to investigate the adequacy of design specifications pertaining to square CFT sections fabricated from HSS and HSC. Experimental and FEM results suggest that the current design specifications are adequate to predict the ultimate strengths of square CFT sections fabricated from HSS (690 MPa) and HSC (90-130 MPa). (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:458 / 472
页数:15
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