The evaluation of the load carrying capacity and the rehabilitation of existing masonry arch bridges represent a crucial task, related with the human safety and the conservation of architectural heritage. Considering the large number of masonry arch bridges still in service along the existing road network, the assessment of their seismic vulnerability is of relevant importance. In this paper a numerical procedure based on the limit analysis for the assessment of masonry arch bridges subjected to permanent and seismic loads is presented. A parametric investigation on the effect of the backfill internal friction angle and abutments height is performed. Moreover, the effect of two types of strengthening interventions, namely the arch thickening and the application of fiber composite materials, are furthermore discussed.
Seismic assessment of masonry arch bridges and parametric investigation of structural reinforcement
SEVERINI, LAURA;BONFIGLI, MASSIMO FEDERICO;BRECCOLOTTI, Marco;CAVALAGLI, NICOLA;GUSELLA, Vittorio
2016
Abstract
The evaluation of the load carrying capacity and the rehabilitation of existing masonry arch bridges represent a crucial task, related with the human safety and the conservation of architectural heritage. Considering the large number of masonry arch bridges still in service along the existing road network, the assessment of their seismic vulnerability is of relevant importance. In this paper a numerical procedure based on the limit analysis for the assessment of masonry arch bridges subjected to permanent and seismic loads is presented. A parametric investigation on the effect of the backfill internal friction angle and abutments height is performed. Moreover, the effect of two types of strengthening interventions, namely the arch thickening and the application of fiber composite materials, are furthermore discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
