The behaviour at failure of 266 beam-column joints tested by various authors has been examined to identify a model for computing the shear strength of internal beam-column joints under severe seismic actions. This exam has pointed out that during the cyclic loading a large diagonal cracking comes together with a joint volumetric expansion. Four resisting contributions to joint expansion have been identified: the concrete one, the beam longitudinal reinforcement one, the beam constraints contribution against the horizontal joint expansion, and the stirrup one. The overall shear strength has been taken as the sum of these four contributions, each dependent on a multiplying factor which has been univocally determined on the experimental available data. The obtained expression predicts the shear strength in a more accurate and uniform way than the Eurocode and ACI Code expressions.

Contributi Resistenti a Taglio nei Nodi Interni Soggetti ad Azione Sismica

ANGELI, Paolo;MITRI, Denis;RUSSO, Gaetano;SOMMA, Giuliana
2004

Abstract

The behaviour at failure of 266 beam-column joints tested by various authors has been examined to identify a model for computing the shear strength of internal beam-column joints under severe seismic actions. This exam has pointed out that during the cyclic loading a large diagonal cracking comes together with a joint volumetric expansion. Four resisting contributions to joint expansion have been identified: the concrete one, the beam longitudinal reinforcement one, the beam constraints contribution against the horizontal joint expansion, and the stirrup one. The overall shear strength has been taken as the sum of these four contributions, each dependent on a multiplying factor which has been univocally determined on the experimental available data. The obtained expression predicts the shear strength in a more accurate and uniform way than the Eurocode and ACI Code expressions.
File in questo prodotto:
File Dimensione Formato  
Genova 2004 - Nodi.pdf

non disponibili

Tipologia: Altro materiale allegato
Licenza: Non pubblico
Dimensione 632.91 kB
Formato Adobe PDF
632.91 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/11390/883568
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact