Assessment of Perforated Steel Beam-to-Column Connections Subjected to Cyclic Loading

Tsavdaridis, Konstantinos Daniel; Faghih, Faezeh; Nikitas, Nikolaos

doi:10.1080/13632469.2014.935834

Cited by 35 publications

(26 citation statements)

References 21 publications

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“…From the results, it shows that models with the same opening size, the load capacity increases as the spacing between openings increase. Tsavdaridis et al (2014) done studied on beam to column connection using perforated section subjected to cyclic loading. Flush end plate was chosen in this study.…”

Section: Figmentioning

confidence: 99%

Behaviour of the Beam to Column Connection for Tapered Steel Section with Perforation

De’nan¹,

Hasan²,

Mahzuz³

2017

Eng. herit. j.

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Section: Figmentioning

confidence: 99%

Behaviour of the Beam to Column Connection for Tapered Steel Section with Perforation

De’nan¹,

Hasan²,

Mahzuz³

2017

Eng. herit. j.

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“…Lignos et al [11] also provided valuable data exported from a large experimental analysis that can describe the RBS response through five damage states. Tsavdaridis et al investigated the efficiency of beam web impairment (Reduced Web Sections -RWS) providing useful data for steel seismic resistant frames [12]. Furthermore, the T-stub effect and weld access holes existence was studied by Brunesi et al [13] in seismic response of steel MRF connections.…”

Section: Introductionmentioning

confidence: 99%

Reduced Beam Section (RBS) Moment Connections-Analytical Investigation Using Finite Element Method

Sofias

Tzourmakliotou

2018

CivileJournal

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Reduced Beam Section (RBS) moment resisting connections are among the most economical and practical rigid steel connections developed in the aftermath of the 1994 Northridge and the 1995 Kobe earthquakes. Although the RBS connection effectiveness was widely investigated using US design and construction practices, only limited data exist from European research. Recommendations of RBS applications in steel frames were prescribed in EC8, Part3. However the reliability of these recommendations is under consideration due to above mentioned poor existing data. This paper examines numerous different contours of radius cut-out (Group A) and provides recommendations for the design and detailing of radius cut Reduced Beam Section (RBS) moment connections. Furthermore, it examines and compares different beam cross sections of European steel profiles (Group B) while the sizing of the RBS cut is kept at a constant ratio. Analytical approach was conducted investigating the adopted by EC8, Part 3 key parameters for the design. The main objective of the applied RBS geometry is to protect the connection and its components (endplate, column flange, bolts, welds) from either plastification or failure. Although the computational cost for optimization with ABAQUS is very large, the results of this study ensures on one hand that the performances of the structural parts can be effectively improved by shape optimization and an the other hand that adjustment in the geometry of the radius cut is needed for safe application to European profiles.

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“…Such techniques prove suitable in cases where large plastic rotations are required (i.e., larger than 0.03 rad). Tsavdaridis et al (2014) have further proposed the use of previously patented novel elliptically based web opening shapes, which can also be used for perforated beams (e.g., cellular and castellated beams) adding numerous advantages from the manufacturing process to their life-span, while they can develop rotational capacities up to 0.05 rad with insignificant strength degradation (Fig. 7).…”

Section: Steel Connections: Fusesmentioning

confidence: 99%

Strengthening Techniques: Code-Deficient Steel Buildings

Tsavdaridis

2014

Encyclopedia of Earthquake Engineering

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IntroductionThe design of steel buildings is often governed by lateral wind loads and not seismic loads. Also, statistics indicate that the number of fatalities during earthquakes due to failure of all types of steel buildings is significantly less compared to other types of buildings. Consequently, much effort has been invested to seismically retrofit buildings having unreinforced masonry walls and reinforced concrete frames. However, recently steel buildings have received significant attention, while this interest mainly stems from the realization, following the 1994 Northridge earthquake, that the welded beam-to-column connections in moment-resisting frames were likely to fail in a brittle manner, prior the development of significant inelastic response, therefore negating the design intent and possibility causing safety hazards.Recent research has expanded the variety and versatility of the tools available in the structural engineer's toolbox to meet the seismic performance objectives. This entry provides an overview of how this research is expanding the available options for the seismic strengthening of steel buildings, by reporting on some selected research projects.Structural strengthening and proving seismic resistance for steel building, but also masonry and reinforced concrete, may be done by first considering the direction of the weak links in the structures. For instance, for a heavy building with large dead load, this would be the major factor that contributes to the increase of lateral seismic load. Therefore, it is reasonable to first consider reducing the overall existing dead load and then provide the necessary strengthening technique for the lateral load-resisting system of the structure.The use of structural steel in buildings' retrofitting can be often considered economical and efficient because:• Steel buildings are particularly effective under performance-based design.• Steel members exhibit ductile behavior beyond elastic limit, hence dissipate considerable amount of energy before damages occur.• Steel members have higher strength-to-weight and stiffness-to-weight ratios; hence, the buildings attract less base shear under an earthquake.• A better quality control is practiced in the production of the material as well as the fabrication and erection of them, while ensuring results close to the theoretical predictions.*Email: k.tsavdaridis@leeds.ac.ukEncyclopedia of Earthquake Engineering DOI 10.1007/978-3-642-36197-5_207-1 # © Crown 2014Page 1 of 26• Steel can be generally used to retrofit all types of structures without increasing the dead weight dramatically, making the works less intrusive and time consuming. Code-Deficient BuildingsAll buildings can carry their own weight. They can usually carry a bit of snow and a few other floor loads vertically, so even badly built buildings and structures can resist some up-and-down loads. However, buildings and structures are not necessarily resistant to lateral loads, unless this has been taken into account carefully during the structural engin...

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Assessment of Perforated Steel Beam-to-Column Connections Subjected to Cyclic Loading

Abstract: This article presents a study of fully fixed (welded)

Cited by 35 publications

References 21 publications

Behaviour of the Beam to Column Connection for Tapered Steel Section with Perforation

Behaviour of the Beam to Column Connection for Tapered Steel Section with Perforation

Reduced Beam Section (RBS) Moment Connections-Analytical Investigation Using Finite Element Method

Strengthening Techniques: Code-Deficient Steel Buildings

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