Local-distortional interaction in cold-formed steel lipped channel beams: Experimental investigation

被引：3

作者：

Martins, Andre Dias ^{[1
]}

Camotim, Dinar ^{[2
]}

Dinis, Pedro Borges ^{[2
]}

Chen, Man-Tai ^{[3
,4
]}

Young, Ben ^{[5
]}

机构：

[1] Univ Lisbon, IDMEC, Inst Super Tecn, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal

[2] Univ Lisbon, CERIS, DECivil, Inst Super Tecn, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal

[3] Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Dept Civil Engn, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Maintenance Bldg & Infra, Dept Civil Engn, Shanghai 200240, Peoples R China

[5] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Pokfulam Rd, Hong Kong, Peoples R China

来源：

STEEL CONSTRUCTION-DESIGN AND RESEARCH | 2022年 / 16卷 / 02期

关键词：

cold-formed steel lipped channel beams; experimental investigation; four-point bending tests; uniform and non-uniform bending; local-distortional interaction; Direct Strength Method (DSM) design; STRENGTH; BEHAVIOR;

D O I：

10.1002/stco.202200018

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper reports an experimental investigation on the behaviour and strength of cold-formed high-strength steel (G450-G500) lipped channel beams susceptible to local-distortional interaction. The experimental campaign comprised 36 tests involving simply supported beams bent about the major axis, exhibiting various ratios between their distortional and local critical buckling moments (from 1.09 to 1.46) and acted by either uniform (20 tests) or non-uniform (trapezoidal: 16 tests) bending diagrams. The results presented and discussed consist of equilibrium paths, photos providing the evolution of the beam deformed configurations and failure moments. The paper also includes a few remarks on the design, using the Direct Strength Method, of the beams under consideration.

引用

页码：68 / 77

页数：10

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