Influence of corrosion effects on the seismic capacity of existing RC bridges

A simplified approach to evaluate cyclic response and seismic fragility of corrosion damaged RC bridge piers

“…Highly corroded bridge piers can be subjected to nonuniform corrosion with corrosion pit which was not considered in the simplified FEM model. Rebar corrosion significantly affects the structural behavior of RC structures (Berto et al, 2009;Crespi et al, 2020;Crespi et al, 2022;G. M. et al, 2018) and it is important to consider mechanical damages caused by corrosion products and related cracking in the surrounding concrete (Coronelli and Gambarova, 2004).…”

Maintenance interventions period of existing RC motorway viaducts located in moderate/high seismicity zones

“…During last decades, the occurrence of several collapses which involved existing reinforced concrete (RC) motorway bridges led to considerable attention on the correct planning of the maintenance interventions to achieve a suitable safety level [1][2][3][4][5][6][7][8]. An important aspect that affects the seismic performance of existing RC bridges is the presence of corrosion in the structural elements due to carbonation phenomenon which can lead to a reduction of the piers steel reinforcements area [9][10][11][12]. Several Italian RC viaducts were built around 1970's and, consequently, require a series of maintenance interventions to guarantee an adequate safety level [13][14][15].…”

Dynamic Response Analysis of Coastal Piled Bridge Pier Subjected to Current, Wave and Earthquake Actions with Different Structure Orientations

“…In actuality, the majority of these failures were brought on by improper maintenance intervention scheduling. The steel reinforcement corrosion brought on by the carbonation phenomena is one of the key concerns concerning the load-bearing capability of existing reinforced concrete structures (Crespi et al, 2022). So far, the understanding of the coupling mechanism of multi-disaster loads is not clear enough.…”