Resistance of cold-formed high strength steel circular and polygonal sections - Part 1: Experimental investigations

被引：26

作者：

Tran, Anh Tuan ^{[1
]}

Veljkovic, Milan ^{[1
]}

Rebelo, Carlos ^{[2
]}

da Silva, Luis Simoes ^{[2
]}

机构：

[1] Lulea Univ Technol, Lulea, Sweden

[2] Univ Coimbra, Dept Civil Engn, ISISE, P-3000 Coimbra, Portugal

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2016年 / 120卷

关键词：

High strength steel; Cold-formed sections; Geometrical imperfections; Wind turbine towers; Experiments; BUCKLING BEHAVIOR; IMPERFECTIONS; COLUMNS;

D O I：

10.1016/j.jcsr.2015.10.014

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents results from experiments performed on cold-formed high strength steel circular and polygonal sections. The test specimens were conceived to provide necessary information for development of tubular towers for wind turbines. A total of 32 high strength steel specimens were tested under uniaxial compression. Various thicicnesses, openings and geometric imperfections were studied. Sixteen specimens without opening and sixteen specimens with opening were tested under axial compression in order to investigate influences of opening on the resistances. Tensile tests of coupon specimens taken from flat part, circular part and comer part were used to investigate basic properties of high strength steel material S650 and to evaluate influence of corner on the material strength and ductility. Initial geometric imperfections of the specimens were determined by using a 3D laser scanning method. The coupon test results were used to calibrate the ductile damage material models for modelling of fracture. Results from the experiments are fully described in this paper. (c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：245 / 257

页数：13

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[21] Bolted shear connectors vs. headed studs behaviour in push-out tests [J].