Evaluation of Structural Reliability for Reinforced Concrete Buildings Considering the Effect of Corrosion

Tolentino, Dante; Carrillo-Bueno, Carlos A.

doi:10.1007/s12205-017-1650-2

Cited by 12 publications

(7 citation statements)

References 23 publications

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“…The ground motion data set used as input for the seismic simulations has been extracted from two seismographic stations close to the study case, which complies with forty-six ground motions recorded during the past several decades that are related to events with a magnitude between 4 and 7.5 [ 40 ]. The mean epicentral distance is equal to 170.58 km.…”

Section: Illustrative Examplementioning

confidence: 99%

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Fragility Assessment of RC Bridges Exposed to Seismic Loads and Corrosion over Time

Herrera

Tolentino

2023

Materials

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A methodology to estimate the structural fragility of RC bridges, considering the effects of seismic loadings and corrosion over time, is presented. Two scenarios are considered: (a) The structure is exposed only to seismic loads, (b) Both the effect of corrosion and seismic loads are present in the system. The uncertainties related to material properties, structural geometry, seismic occurrences, corrosion initiation time, cracking and corrosion evolution are considered. Different time stages, such as 0, 50, 75, 100, and 125 years are selected to evaluate the effect of both seismic loads and seismic loads plus corrosion. The calculation of fragility curves implies a structural design, nonlinear modeling of structures with simulated properties, estimation of both corrosion times and seismic occurrences, and evaluation of structural demand over time considering the effect of seismic loads and corrosion. An illustrative example is provided on an RC continuous bridge with AASHTO beams, cap beams and circular columns located in Acapulco, Guerrero, Mexico. A performance level equal to 0.002 is chosen for the design of the structure. Results show that the probability of exceeding the design performance levels for both cases (seismic and seismic plus corrosion) are similar at the stage of time equal to zero (a newly built bridge). However, such probabilities, after 150 years, are equal to 0.61 and 0.85 due to the cumulative damage caused by seismic and seismic plus corrosion, respectively. The estimation of the probability of exceeding a certain performance level, considering the effect of corrosion together with seismic loads, highlights the importance of considering more than one type of solicitation for these kinds of structural systems. Lastly, recommendations about design are given.

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Section: Illustrative Examplementioning

confidence: 99%

“…Ref. [ 40 ] presents a methodology to assess the effect of corrosion deterioration on the structural reliability of RC buildings. Ref.…”

Section: Introductionmentioning

confidence: 99%

Fragility Assessment of RC Bridges Exposed to Seismic Loads and Corrosion over Time

Herrera

Tolentino

2023

Materials

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“…The prefabricated reinforced concrete (RC) hollow slab bridge, with the characteristics of higher quality, lower cost and shorter construction period, has been widely used for small-to-medium-span highway bridges in China [1,2]. As environmental deterioration and traffic volume increase, the mechanical properties of RC bridges deteriorate gradually [3][4][5]. Many in-service bridges cannot meet the current operational requirements [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

System Reliability Evaluation of Prefabricated RC Hollow Slab Bridges Considering Hinge Joint Damage Based on Modified AHP

et al. 2019

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The prefabricated reinforced concrete (RC) hollow slab bridges, with the advantages of high quality, lower cost and shorter construction period, have been widely used for small-to-medium-span highway bridges in China. Because of environmental deterioration and traffic volume increases, the performance of the bridge system deteriorates gradually. Accurate bridge system evaluation can provide a reliable basis for maintenance and management. A bridge system is composed of multiple interrelated components, which makes the system reliability evaluation become a computationally intractable work. In this paper, an effective method was proposed to evaluate the system reliability of the prefabricated RC hollow slab bridge considering hinge joint damage based on the modified analytic hierarchy process (AHP). Considering the subjectivity of the traditional AHP method in constructing the judgment matrix, this paper proposed an objective construction method of the judgment matrix to modify the traditional AHP. The modified hinge plate method (MHPM) proposed by the previous research was utilized to analyze the effect of hinge joint damage on system reliability. In order to verify the applicability of the proposed system reliability evaluation method, a simply supported RC hollow slab bridge was selected as the case study and the system reliability indexes were compared with the traditional series and parallel methods. The results indicated that the traditional methods were either too conservative or too radical to objectively evaluate the actual system reliability level of the structure. In contrast, the proposed method in this paper was more suitable for evaluating the system reliability of such bridges, and more accurate in providing maintenance decision makers with a relatively reasonable bridge condition information.

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“…Geng et al studied the long‐term behavior of fiber reinforced concrete (RC) exposed to sulfate solution cycling in drying‐immersion. Tolentino et al proposed an approach to evaluate the structural reliability taking into account the degradation of the structural capacity due to corrosion of RC buildings at the end of a time interval. Wang et al investigated the effects of length and location of the steel corrosion on the structural behavior and load capacity of RC columns.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic effects of corrosion direction on the mechanical behaviors of cement mortar

Liu

Chen

Yao³

2019

Structural Concrete

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In order to understand the influence of seawater corrosion on the mechanical behaviors of cement mortar, uniaxial compression tests were performed on the cement mortar specimens after corrosion in diverse directions. In this study, solutions of NaCl and Na2SO4 were prepared and used to simulate seawater. In addition, the differences of mechanical behaviors of cement mortar specimens after being immersed in solutions in uni‐, bi‐, and triaxial‐directions were also compared. Test results show that the compressive strength of cement mortar after immersed in sodium chloride solution is higher than that in sodium sulfate solution. The peak strain of cement mortar specimen after immersed in sodium chloride solution is lower than that in sodium sulfate solution after unidirection corrosion. Moreover, the compressive strength and peak strain of cement mortar specimen when the loading direction is parallel to the corrosion direction are both higher than those when the loading direction is perpendicular to the corrosion direction.

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Evaluation of Structural Reliability for Reinforced Concrete Buildings Considering the Effect of Corrosion

Cited by 12 publications

References 23 publications

Fragility Assessment of RC Bridges Exposed to Seismic Loads and Corrosion over Time

Fragility Assessment of RC Bridges Exposed to Seismic Loads and Corrosion over Time

System Reliability Evaluation of Prefabricated RC Hollow Slab Bridges Considering Hinge Joint Damage Based on Modified AHP

Anisotropic effects of corrosion direction on the mechanical behaviors of cement mortar

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