Design of RC joints equipped with hybrid trussed beams and friction dampers

Colajanni, Piero; Mendola, Lidia La; Monaco, Alessia; Pagnotta, Salvatore

doi:10.1016/j.engstruct.2020.111442

Cited by 26 publications

(9 citation statements)

References 24 publications

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“…Recently, the authors proposed a friction damper for beam-to-column connections (BCCs) applied to RC moment-resisting frames (MRFs) endowed with semi-prefabricated hybrid steel-trussed concrete beams (HSTCBs), and standard RC pillars [15][16][17]. HSTCBs are a class of hybrid beams constructed with a prefabricated steel truss embedded within a concrete core cast-in-place, which have been extensively studied in the literature, using both experimental, numerical, and analytical methods, e.g., [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Low-Damage Friction Connections in Hybrid Joints of Frames of Reinforced-Concrete Buildings

et al. 2023

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Seismic-resilient buildings are increasingly designed following low-damage and free-from-damage design strategies that aim to protect the structure’s primary load-bearing systems under ultimate-level seismic loads. With this scope, damping devices are located in accessible and easy-to-inspect sites within the main structural frames where the damage concentrates, allowing the primary structure to remain mostly undamaged or easily repairable after a severe earthquake. This paper analyses the effects of friction-damping devices in structural joints of RC buildings endowed with hybrid steel-trussed concrete beams (HSTCBs) and standard RC columns. The study proposes innovative solutions to be adopted into RC moment-resisting frames (MRFs) at beam-to-column connections (BCCs) and column-base connections (CBCs). The cyclic behaviour of the joint is analysed through 3D finite element models, while pushover and non-linear time history analyses are performed on simple two-storey and two-span MRFs endowed with the proposed devices. The main results show that the BCC endowed with curved slotted holes and Perfobond connectors is the most effective in preventing the damage that might occur in beam, column, and joint, and it is adequate to guarantee good dissipative properties. For CBCs, the results showed that the re-centering system with friction pads is the most effective in containing the peak and residual drifts, preventing the plasticization of the column base.

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Section: Introductionmentioning

confidence: 99%

Low-Damage Friction Connections in Hybrid Joints of Frames of Reinforced-Concrete Buildings

et al. 2023

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“…Nowadays, the safety of both structures and infrastructures is becoming an important issue. Regarding the context of seismic safety, both seismic isolation [1]- [3] and dissipation [4]- [7] are key strategies to reduce the seismic risk. Specifically, seismic isolation in case of infrastructures has the goal to decouple the inertia forces transmitted from the superstructures to the piers by increasing the period at the isolation level.…”

Section: Introductionmentioning

confidence: 99%

Optimal Properties of Single Concave Friction Pendulum Bearings for the Isolation of Bridges Subjected to Far Field Records

Miceli,

Gino,

Ricioppo

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The present study focuses on the analysis of the seismic performance of isolated bridges, equipped with single concave friction pendulum (FPS) bearings. The bridge is modelled through a six-degree-of-freedom system considering two FPS bearings placed on top of the rigid abutment and the elastic pier. The six equations of motion are analytically solved in order to obtain the response parameters normalized with respect to the peak ground acceleration-to-velocity ratio (PGA/PGV). In addition, a parametric analysis is conducted by varying some bridge properties. All these different bridges are then subjected to a set of 30 far field records having low and high PGA/PGV ratios to assess the seismic performance.

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“…In order to easily equip with efficient and cost-effective seismic damage-proof connections of RC moment-resisting framed structures endowed with semi-prefabricated steel-trussed concrete beams and standard RC pillars cast-in-place, a recent study has developed specific energy dissipating systems for hybrid beam-to-column connections using both experimental, numerical, and analytical methods [15][16][17][18]. Generally, the use of friction dampers prevents damage to the structural elements, improves the expected performance, and limits damage to the panel zone [19], while the use of devices based on shape memory alloys (SMA) is more effective at recovering strains and reducing residual deflections [20].…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior and Modeling of Ductile Composite Steel-Trussed Concrete Beam to Column Joints

Di Cesare,

Belviso,

Ponzo

et al. 2023

Applied Sciences

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This paper presents an experimental and numerical study on a ductile beam-column connection between a composite reinforced concrete truss (CRCT) beam and a reinforced concrete (RC) or concrete-filled tube (CFT) column subjected to bending and shear loads. Two experimental models with different beam-column joint testing schemes, extracted from the same prototype three-dimensional structure designed according to the rules of the capacity design provided by seismic code, were subjected to quasi-static cyclic tests by applying gravitational loads and the horizontal seismic force. The main objective of this paper is to verify the ductile behavior of both specimens experimentally and to simulate the experimental global and local responses by nonlinear static analysis, considering different modeling approaches. The comparison between the experimental and numerical results highlights, for both models considered, the ductile and dissipative capacity of the connection system, designed following the criteria of the hierarchy of resistances proposed by the current Italian code. The results of different experimental setups demonstrate that the tests can be repeated and the results can be reproduced by means of simple nonlinear models.

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Design of RC joints equipped with hybrid trussed beams and friction dampers

Cited by 26 publications

References 24 publications

Low-Damage Friction Connections in Hybrid Joints of Frames of Reinforced-Concrete Buildings

Low-Damage Friction Connections in Hybrid Joints of Frames of Reinforced-Concrete Buildings

Optimal Properties of Single Concave Friction Pendulum Bearings for the Isolation of Bridges Subjected to Far Field Records

Seismic Behavior and Modeling of Ductile Composite Steel-Trussed Concrete Beam to Column Joints

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