Finite Element Modelling of Detachable Short Links

Zimbru, Mariana; D’Aniello, Mario; Stratan, Aurel; Landolfo, Raffaele; Dubină, Dan

doi:10.7712/120117.5457.17470

Cited by 7 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zimbru et al [20] investigated numerically the effect of the concrete slab on the seismic performance of the replaceable shear links. It was found out that the shear and the axial forces developing into the links with reinforced concrete slab cast over them are very close to those exhibited by the bare-steel assemblies.…”

Section: Bolted Links In Eccentrically Braced Framesmentioning

confidence: 99%

Experimental qualification of replaceable bolted links in dual eccentrically braced frames

Dubina,

Stratan

2023

ce papers

Self Cite

View full text Add to dashboard Cite

The performance of structures under severe seismic action is ensured by properly calibrated ductility, stiffness, and strength. The “plastic” members of ductile mild carbon steel (S235 to S355) dissipate the seismic energy, acting as “structural fuses”, while the “elastic” members must be provided with adequate overstrength, to have the capacity to carry the stresses corresponding to yielded and strain hardened plastic hinges. High strength steels, such as S460 to S690, might be used for these elastic members, providing them with the necessary overstrength, without enhancing the stiffness, as that could unbalance the structural system. Dual structural systems, as moment resisting frames (MRFs) combined with eccentrically braced frames (EBFs), can be equipped with replaceable mild carbon steel dissipative links acting as seismic fuses. The MRFs, possibly fabricated from high strength steel, remain elastic, being able to recover the initial position. The key problem in such systems is the design and calibration of the fuses, i.e. the replaceable bolted links, which should be carefully qualified by tests. The present paper reviews past research on bolted replaceable links and discusses the experimental qualification requirements.

show abstract

Section: Bolted Links In Eccentrically Braced Framesmentioning

confidence: 99%

Experimental qualification of replaceable bolted links in dual eccentrically braced frames

Dubina,

Stratan

2023

ce papers

Self Cite

View full text Add to dashboard Cite

show abstract

“…As depicted in those articles, a short shear link with shear slotted bolted connection (SSL-SSBC) was proven effective in enhancing the system ductility and energy dissipation with limited damage for medium intensity earthquakes and concentrated damage for large intensity earthquakes in Y shaped EBFs. Moreover, a decisive contribution towards the understanding of detachable short links was provided by Zimbru et al [128].…”

Section: Bolted Connections In Eccentrically Braced Framesmentioning

confidence: 99%

Seismic Design of Bolted Connections in Steel Structures—A Critical Assessment of Practice and Research

et al. 2022

View full text Add to dashboard Cite

The importance of connections in steel structures is paramount, not only because it greatly influences the cost of construction and provides room for innovations, but also due to the connections’ impact on global structural behaviour. Therefore, research into innovative connections for seismic applications and related design criteria has significantly grown in recent years. However, it has been pursued mostly on local—connection or frame—levels, leaving the system analysis and code compliance levels with a meagre investigation. Moreover, less than 1% of published papers concerning steel connections and earthquake engineering are review articles. To overcome this gap, this systematic review of more than 240 references, including scientific contributions and design codes in the field aimed to cover both recent research and current shortcomings in practice and regulations. It has been found that European design rules updated to a fully performance-based design philosophy is imminent and is deemed to bring pre-qualified joints and increased complexity. Design rules have been systematized, and current hindrances have been highlighted. A deeper look into research needs and trends showed that investigations in connections for concentrically X braced frames are still a necessity, while developments in self-centring and replaceable connections as well as in simple solutions for increasing damping are expected to modify how joints are designed, as soon as semi-rigid and partial strength connections are more easily allowed by design codes.

show abstract

Performance of short links with flush and extended end plate connections using FEM analysis

Plaitano,

Stratan,

Chesoan

et al. 2023

ce papers

Self Cite

View full text Add to dashboard Cite

Eccentrically braced frames are commonly used as a seismic resistant system, due to the good balance of stiffness and ductility. Bolted links have been proposed in the past to allow replacing the damaged dissipative components following a strong earthquake. The goal of this research work is to investigate the influence of the connection type on the performance of bolted links using the Finite Element Analysis. Numerical models of links are first calibrated using past experimental tests. Modelling criteria adopted to replicate the experimental behaviour of the links highlighted in the tests are reported. The achieved results obtained regarding a flush end plate bolted link and an extended end plate bolted link with different lengths are then used as benchmark to assess the influence of the link length and type of connections adopted on the response of the links. The Finite Element Method is used to investigate alternative solutions to the tested ones. Finally, the investigated options are compared to determine the advantages and disadvantages of each solution.

show abstract

Finite Element Modelling of Detachable Short Links

Cited by 7 publications

References 18 publications

Experimental qualification of replaceable bolted links in dual eccentrically braced frames

Experimental qualification of replaceable bolted links in dual eccentrically braced frames

Seismic Design of Bolted Connections in Steel Structures—A Critical Assessment of Practice and Research

Performance of short links with flush and extended end plate connections using FEM analysis

Contact Info

Product

Resources

About