This paper deals with the collapse behavior of a historical masonry arch bridge subject to combined seismic loads, by means of the limit analysis and shakedown theorems. A finite element modal analysis and seismic load evaluation was performed building a program code. The assessment of the collapse loads and shakedown multiplier, consisting of corresponding nonlinear constrained optimization problems, were analyzed using lower bound theorems of the limit analysis and shakedown theory, respectively. Because the retrofitting of this structure cannot be performed in the intrados surface, the application of CFRP strips on the extrados of the arch is a useful and valuable technique, as shown by a significant increase of the limit and shakedown multipliers.
Limit Analysis For Historical Masonry Bridge With Cfrp Reinforcements / Gesualdo, A.; Catalani, G.. - (2013), pp. 1-16. (Intervento presentato al convegno 2013 TRB Annual Meeting tenutosi a Washington, D.C. nel January 13-17, 2013).
Limit Analysis For Historical Masonry Bridge With Cfrp Reinforcements
Gesualdo A.
;
2013
Abstract
This paper deals with the collapse behavior of a historical masonry arch bridge subject to combined seismic loads, by means of the limit analysis and shakedown theorems. A finite element modal analysis and seismic load evaluation was performed building a program code. The assessment of the collapse loads and shakedown multiplier, consisting of corresponding nonlinear constrained optimization problems, were analyzed using lower bound theorems of the limit analysis and shakedown theory, respectively. Because the retrofitting of this structure cannot be performed in the intrados surface, the application of CFRP strips on the extrados of the arch is a useful and valuable technique, as shown by a significant increase of the limit and shakedown multipliers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.