Deteriorated seismic capacity assessment of <scp>reinforced concrete</scp> bridge piers in corrosive environment

Domaneschi, Marco; Gaetano, Antonino De; Casas, Joan R.; Cimellaro, Gian Paolo

doi:10.1002/suco.202000106

Cited by 30 publications

(29 citation statements)

References 35 publications

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“…The bridge considered for the study is a motorway overpass located in Sicily, close to the strait of Messina, zone of high seismic hazard. A complete description of the geometry, structural conditions, and the seismic loading characterization can be found in References 14 and 15. However, in order to make the manuscript self‐contained, some key general aspects are summarized below.…”

Section: Bridge Case Studymentioning

confidence: 99%

“…The foundation consists in a 5 × 5 × 2.5 rigid footing. The selected construction materials are Steel B450C and Concrete C40/50 15 …”

Section: Bridge Case Studymentioning

confidence: 99%

“…The effect of the corrosion process on the steel bar is quantified with reference to the method presented in Reference 19, where the residual reinforcement diameter d ( t ) is computed by Equation (), the residual pitting depth p ( t ) at time t (assumed to take a hemispherical form) by Equation (), and the residual cross‐sectional area of steel bar A ( t ) due to general corrosion by Equation () 15

d ((), t) = d_{0} - 2 \int_{t_{corr}}^{t} λ ((), t) italicdt,

p ((), t) = R \int_{t_{corr}}^{t} λ ((), t) italicdt,

A ((), t) = \frac{π}{4} {[d (t)]}^{2} .

…”

Section: Corrosion Modelmentioning

confidence: 99%

“…Interaction domains are used to assess the seismic performance of the bridge pier that results simultaneously subjected to axial and bending stresses. The input parameters for the construction of the interaction domains that have been modified to consider the effects of corrosion are steel rebar cross‐section, steel yield strength, and steel ultimate strain 14,15 . Therefore, the reductions along time of the three input parameters have been computed for the cases of general corrosion, pitting corrosion, and their coupled effect.…”

Section: Structural Capacity and Ductilitymentioning

confidence: 99%

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Bond deterioration effects on corroded RC bridge pier in seismic zone

Bartolozzi

Casas

Domaneschi

2021

Structural Concrete

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The effects of corrosion focusing on the consequences of bond strength deterioration for a reinforced concrete bridge pier in a seismic affected area are examined in this research. A bond degradation model based on the local bond stress‐slip model presented in FIB Model Code 2010 is chosen. A motorway overpass object of a previous study, which considered the rebars cross‐section reduction effect only, has been selected to assess the seismic capacity of the corroded pier in the time domain when bond degradation due to corrosion is also taken into account. The modification of strength capacity and ductility of the structural element is analyzed and the effect of corrosion during the whole service life of the structure is obtained. It is concluded that the effect of bond degradation is more critical for the safety of the pier than the effect of rebars cross‐section loss.

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Section: Bridge Case Studymentioning

confidence: 99%

“…The foundation consists in a 5 × 5 × 2.5 rigid footing. The selected construction materials are Steel B450C and Concrete C40/50 15 …”

Section: Bridge Case Studymentioning

confidence: 99%

d ((), t) = d_{0} - 2 \int_{t_{corr}}^{t} λ ((), t) italicdt,

p ((), t) = R \int_{t_{corr}}^{t} λ ((), t) italicdt,

A ((), t) = \frac{π}{4} {[d (t)]}^{2} .

…”

Section: Corrosion Modelmentioning

confidence: 99%

Section: Structural Capacity and Ductilitymentioning

confidence: 99%

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Bond deterioration effects on corroded RC bridge pier in seismic zone

Bartolozzi

Casas

Domaneschi

2021

Structural Concrete

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“…Within this context, therefore, such investigations may benefit significantly from the use of reliable numerical methods able to represent the effects of corrosion-induced damage on mechanical behavior. To this end, a wide range of analytical [13], micro [14], meso [15] and macro-scale [16] models have been proposed and successfully applied so far. Among the simplified approaches typically preferred by practitioners and applied researchers, fiber-based finite element models (FB-FEM) are one of the most employed because of the acceptable compromise between accuracy and computational time.…”

Section: Introductionmentioning

confidence: 99%

Earthquake Response Modeling of Corroded Reinforced Concrete Hollow-Section Piers via Simplified Fiber-Based FE Analysis

2021

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The effect of corrosion-induced damage on the seismic response of reinforced concrete (RC) circular bridge piers has been extensively investigated in the last decade, both experimentally and numerically. Contrarily, only limited research is presently available on hollow-section members, largely employed worldwide and intrinsically more vulnerable to corrosion attacks. In this paper, fiber-based finite element (FB-FEM) models, typically the preferred choice by practitioners given their reduced computational expense, are validated against previous shake-table and quasi-static cyclic tests on hollow-section RC columns, and then used to investigate the influence of corrosion-induced damage. To this end, modeling strategies of varying complexity are used, including artificial reduction of steel rebar diameter, yield strength and ductility, as well as that of concrete compressive strength to simulate cover loss, and ensuing dissimilarities quantified. Pushover and incremental dynamic analyses are conducted to explore impacts on collapse behavior, extending experimental results while accounting for multiple corrosion rates. Produced outcomes indicate a minimal influence of cover loss; substantial reductions of base shear (up to 37%) and ultimate displacement capacity (up to 50%) were observed, instead, when introducing relevant levels of deterioration due to corrosion (i.e., 30% rebar mass loss). Its predicted impact is generally lower when considering more simplified assumptions, which may thus yield non-conservative predictions.

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Structural Control and Health Monitoring Contributions to Service‐life Extension of Bridges

Domaneschi,

Martinelli,

Cucuzza

et al. 2023

ce papers

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Transportation Infrastructure networks are acknowledged as crucial for economic growth, territorial coherence, and social change. Unfortunately, some of this vast system's most important structural elements, like the bridges, are rapidly aging while the load conditions that these systems were designed to withstand are now being exceeded as a result of various threats, including natural disasters and newly discovered man‐made phenomena. Considering that a large amount of the existing bridge stock was built many years ago, if countermeasures are not taken, deterioration phenomena and an increase in service conditions larger than those used in the original design may have contributed to diminishing the dependability level. Hence, it becomes crucial to evaluate the existing status of transportation infrastructure, make predictions about its future state, and safeguard it from outside threats. This contribution focuses on an in‐depth investigation of the impact of Structural Control and Health Monitoring in increasing the structural resilience of transportation infrastructure and subsequently its life‐cycle.

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Deteriorated seismic capacity assessment of reinforced concrete bridge piers in corrosive environment

Cited by 30 publications

References 35 publications

Bond deterioration effects on corroded RC bridge pier in seismic zone

Bond deterioration effects on corroded RC bridge pier in seismic zone

Earthquake Response Modeling of Corroded Reinforced Concrete Hollow-Section Piers via Simplified Fiber-Based FE Analysis

Structural Control and Health Monitoring Contributions to Service‐life Extension of Bridges

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