The challenge of this research consists in the first attempt to apply a dissipative friction connection to beam-to-column joints with semi-prefabricated Hybrid Steel-Trussed Concrete Beams (HSTCB) and RC pillars cast in-situ. Nowadays, HSTCBs are widely adopted in civil and industrial buildings and, therefore, it is required to evaluate their compliance with the capacity design criteria and their seismic energy dissipation capability. However, the design of the reinforcement of such beams usually lead to the adoption of large amount of steel within the panel zone which becomes potentially vulnerable to the effects of seismic cyclic actions and dramatically reduce the dissipation capacity of the entire structure. Therefore, the introduction of friction dampers in the HSTCB-to-column joints is investigated in order to evaluate the ability of the device in preventing the main structural elements from damage and limiting the cracking of the panel zone, thanks to the increase of the bending moment lever arm, which reduces the shear forces in the joint. Moreover, the proposed solution thoroughly investigates the connection between the friction device and the beam in order to ensure adequate strength and stiffness to the connection. The feasibility study is firstly conducted through the development of design criteria for the pre-dimensioning of the device and, successively, the proposed solution is validated through the generation of finite element models.

Colajanni P., La Mendola L., Monaco A., & Pagnotta S. (2021). Design of RC joints equipped with hybrid trussed beams and friction dampers. ENGINEERING STRUCTURES, 227, 111442 [10.1016/j.engstruct.2020.111442].

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

Colajanni P.;La Mendola L.;Pagnotta S.
2021

Abstract

The challenge of this research consists in the first attempt to apply a dissipative friction connection to beam-to-column joints with semi-prefabricated Hybrid Steel-Trussed Concrete Beams (HSTCB) and RC pillars cast in-situ. Nowadays, HSTCBs are widely adopted in civil and industrial buildings and, therefore, it is required to evaluate their compliance with the capacity design criteria and their seismic energy dissipation capability. However, the design of the reinforcement of such beams usually lead to the adoption of large amount of steel within the panel zone which becomes potentially vulnerable to the effects of seismic cyclic actions and dramatically reduce the dissipation capacity of the entire structure. Therefore, the introduction of friction dampers in the HSTCB-to-column joints is investigated in order to evaluate the ability of the device in preventing the main structural elements from damage and limiting the cracking of the panel zone, thanks to the increase of the bending moment lever arm, which reduces the shear forces in the joint. Moreover, the proposed solution thoroughly investigates the connection between the friction device and the beam in order to ensure adequate strength and stiffness to the connection. The feasibility study is firstly conducted through the development of design criteria for the pre-dimensioning of the device and, successively, the proposed solution is validated through the generation of finite element models.
Settore ICAR/09 - Tecnica Delle Costruzioni
Colajanni P., La Mendola L., Monaco A., & Pagnotta S. (2021). Design of RC joints equipped with hybrid trussed beams and friction dampers. ENGINEERING STRUCTURES, 227, 111442 [10.1016/j.engstruct.2020.111442].
File in questo prodotto:
File Dimensione Formato  
Colajanni-compresso.pdf

non disponibili

Tipologia: Versione Editoriale
Dimensione 847.5 kB
Formato Adobe PDF
847.5 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/492598
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact