Compression tests on large angle columns in high‐strength steel

Hot‐rolled steel angles are utilized in various construction systems. This work presents an extensive numerical study on the behavior of hot‐rolled steel angles under concentric and eccentric compression. The numerical results were used for the evaluation of existing design procedures commonly applied in practice. In general, the analytical rules were on safe‐side in most analyzed cases. But in case of angle members in eccentric compression by two bolts, the codes presented very high values for ultimate compressive load capacity. Finally, the study extended the numerical data on the resistance available in the literature and promoted a critical discussion about the ongoing revision of design rules for angles concentrically and eccentrically loaded in compression.

Section: Evaluation Of the Design Proceduresmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Evaluation of Design Codes for Hot‐Rolled Steel Angles in Concentric and Eccentric Compression

Gomes,

Carvalho,

da Silva

et al. 2023

“…However, this was corrected, and the corrected curves are illustrated in both figures. More details about the correction can be found in [9]. For all centrally loaded tests, the deflections along the weak axis increased significantly with the load until failure be reached by weak axis buckling.…”

Section: Results Of the Experimental Testsmentioning

confidence: 99%

“…The results of the tests are presented below through graphs and tables. All the results (initial imperfections, deflections, strains, twists) can be found in [9]. Numerical simulations of the experimental tests with FINELG have been performed, by taking into account the actual dimensions, lengths, imperfections and material properties.…”

Section: Materials Propertiesmentioning

confidence: 99%

Compression Tests on Large Angle Columns in High Strength Steel

Bezas¹,

Demonceau

Vayas³

et al. 2021

The paper discusses the stability behaviour of large angle columns in high strength steel subjected to compression loads. It presents a number of compression tests on such columns that have been performed at University of Liege with different eccentricities and slenderness and, as a result, different buckling failure modes observed. The experimental campaign is intended to widen the knowledge about the behaviour of high strength steel columns with large angle sections in compression and bending and so to complement previous experimental studies. The tests have been accompanied by numerical analyses and calculations of the load carrying capacities through present Eurocode prescribed methods. The numerical simulations have been carried out by application of the FEM software FINELG using beam elements and considering of relevant imperfections as well as geometrical and material non – linearities. The numerical and analytical results are compared and validated with the corresponding experimental ones and summarized in the present paper. The experimental campaign and the numerical simulations are part of the European‐funded RFCS project ANGELHY “Innovative solutions for design and strengthening of telecommunications and transmission lattice towers using large angles from high strength steel and hybrid techniques of angles with FRP strips”.

“…6. More information on the tests and the related analyses is provided in [14]. Further on, design formulae were developed for checking equal leg angle section members, applicable for class 2 to 4 cross-sections.…”

Section: Single Angle Steel Membersmentioning

confidence: 99%

Telecommunication and transmission lattice towers from angle sections – the ANGELHY project

Vayas¹,

Jaspart

Bureau

et al. 2021

Lattice towers are extensively built in Europe and worldwide to serve telecommunication or power transmission purposes. The structural members of such towers are frequently made of equal leg angle sections that are often preferred to tubular sections due to their easy connection that results in a simple erection, a requirement set by most telecommunication or power providers. Angle sizes range from light to heavy sections with leg lengths up to 300 mm for towers with significant height. Towers, especially telecommunication ones, may need to be strengthened due to the fact that, during the design life, heavier or larger antennas resulting in a heavier wind loading may be installed. As an alternative to conventional methods, hybrid strengthening of tower angle members with carbon fiber reinforced polymers (CFRP) strips may be employed. The present paper provides an overview of ANGELHY, an RFCS‐funded research project that comes toward its end. The scope of the project is the establishment of analysis methods for lattice towers and the development of design rules for steel and hybrid angle sections, as well as built‐up members composed of angles.