Finite Element Analyses on Seismic Response of Partial Strength Extended Stiffened Joints

Tartaglia, R.; D’Aniello, Mario; Landolfo, Raffaele; Rassati, Gian A.; Swanson, James A.

doi:10.7712/120117.5775.17542

Cited by 29 publications

(18 citation statements)

References 16 publications

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“…Not long before, D'Aniello et al had analysed the shortcomings in Eurocode compliant design of end-plate (EP) bolted connections in MRFs and proposed design criteria for stiffened connections of such a kind [130], while Tartaglia et al compared its design to its American pre-qualified counterpart [102,131]. As a result, it has been shown that both AISC 358-16 pre-qualified and Eurocode compliant pre-qualification proposed (in EQUALJOINT project [132]) approaches for extended stiffened EP bolted joint assure the formation of plastic hinges in beams subjected to cyclic loading, despite following different design criteria [102].…”

Section: Bolted Connections In Moment-resisting Framesmentioning

confidence: 99%

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

et al. 2022

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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.

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Section: Bolted Connections In Moment-resisting Framesmentioning

confidence: 99%

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

et al. 2022

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“…8-node linear brick, incompatible mode). The modelling procedure and hypotheses are already discussed by the Authors in several research papers [21][22][23][24] and hereinafter only the most important aspects are highlighted.…”

Section: Fem Modellingmentioning

confidence: 99%

Robustness of Seismically Pre-Qualified Extended Stiffened Beam-to-Column Joints

Tartaglia¹,

D’Aniello²,

Zimbru³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Steel joints for moment resisting frames in seismic areas are designed in accordance with the capacity-based design principles This design philosophy can be also effectively implemented to enhance the robustness of structures against progressive collapse. In this article the effectiveness of seismic design criteria on the robustness of beam-to-column joints is investigated. The numerical investigation was carried out on a set of European beam-to-column assemblies equipped with extended stiffened end-plate connections. The beams in the analyzed models were axially-restrained and subjected to large rotational demands, characteristic of the column loss scenario. The results show that the joints designed in accordance with seismic requirements have an adequate performance, provided that the axial resistance of half of the connection is larger than the plastic resistance of the beam.

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“…Since their height seismic performance [28][29][30][31] extended stiffened joints were introduced in all the investigated structures; the real joint dimensions were modelled by the introduction of the rigid elements connected to the steel profiles by a lumped non-linear spring. that were properly calibrated against the experimental results obtained within the EQUALJOINTs research project (EQUALJOINTs [32], D'Aniello et al [33]).…”

Section: Fem Modellingmentioning

confidence: 99%

Comparison of Different Design Requirements on P-Delta Effects for Steel Moment Resisting Frames

Tartaglia¹,

D’Aniello²,

Lorenzo³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Steel moment resisting frames (MRFs) compliant with EN1998-1 are largely overdesigned owing to the need to satisfy the severe requirements for lateral deformability and P-Delta effects. On the contrary, the North American codes (e.g. ASCE7) introduce different rules to consider the structural sensitivity to the P-Delta effects. In lines with the latter approach, the current draft version of the amended EN1998-1-1 introduces a different methodology to account for the structural lateral displacements. This work aims to investigate, using static nonlinear analysis, the effectiveness of the new EC8 provisions with respect to the former version of EC8 and the current ASCE7. The analyses have been carried out by accounting for the real dimension of beam-to-column joints and their behavior, which was simulated by means of a non-linear spring, properly calibrated against experimental tests. The results show that the structures designed according to the latest draft version of the EN1998-1-1 and those compliant with the North American code have a similar behavior.

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Finite Element Analyses on Seismic Response of Partial Strength Extended Stiffened Joints

Cited by 29 publications

References 16 publications

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

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

Robustness of Seismically Pre-Qualified Extended Stiffened Beam-to-Column Joints

Comparison of Different Design Requirements on P-Delta Effects for Steel Moment Resisting Frames

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