Seismic Performance of a Corroded Reinforce Concrete Frame Structure Using Pushover Method

Zhang, Meng; Liu, Ran; Li, Yaoliang; Zhao, Guifeng

doi:10.1155/2018/7208031

Cited by 10 publications

(10 citation statements)

References 25 publications

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“…To determine the development of the plastic hinges, a force‐displacement curve composed by two segments is used: linear segment A–B and nonlinear segment B–C 20,32,49 (see Figure 9). The intermediated levels are identified, consistent to the Figure 9b, by: immediate occupancy IO (yellow color), life safety LS (red color), collapse prevention CP (magenta color).…”

Section: Analysis and Deterministic Resultsmentioning

confidence: 99%

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Pushover analysis for flexible and semi‐flexible pile‐supported wharf structures accounting the dynamic magnification factors due to torsional effects

Zacchei

Lyra

Stucchi

2020

Structural Concrete

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This is a pushover analysis for pile‐supported wharves considering the dynamic magnification factors due to torsional effects. The piles seismic design by deterministic approach is shown accounting plastic hinges and P‐delta effects in 2D/3D mathematical modeling. A real structure placed at high seismicity area is considered as case study in order to validate the model and provide reliable technical data. New bound limits of seismic demands associated with damage states and the best soil performance are identified. A stochastic approach is proposed to estimate the no‐exceedance probability of horizontal displacements of a semi‐flexible with respect to a flexible model. Results are plotted in terms of base shears, displacements, and energy. The advantage of the use of pushover analysis in terms of displacements is estimated in 18–38%. Other results as bound limits, hysteretic damping, plastic rotation are compared with previous studies.

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Section: Analysis and Deterministic Resultsmentioning

confidence: 99%

“…For determining demand displacements of PSWSs, a nonlinear static analysis (NSA) is used in current practice consistent to design codes and standards 6–10 . There is an extensive literature on pushover analysis—a typical NSA—but most of these are applied to constructions different from PSWSs 11–23 …”

Section: Introductionmentioning

confidence: 99%

Pushover analysis for flexible and semi‐flexible pile‐supported wharf structures accounting the dynamic magnification factors due to torsional effects

Zacchei

Lyra

Stucchi

2020

Structural Concrete

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“…Cyclic experimental tests on RC columns [1][2][3][4][5][6] were carried out considering different corrosion levels. Based on available experimental findings, numerical models were developed to perform seismic vulnerability assessment of corroded RC buildings 7,8 and bridges. [9][10][11][12] The process of chloride-induced corrosion includes three main phases that are initiation, propagation, and deterioration phase.…”

Section: Introductionmentioning

confidence: 99%

Seismic vulnerability assessment of reinforced concrete bridge piers with corroded bars

Domenico

Messina

Recupero

2023

Structural Concrete

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Reinforced concrete (RC) structures located in aggressive environment, for example, RC bridge piers close to the sea and experiencing chloride attacks, may be exposed to an increased seismic vulnerability. This requires practical yet effective safety assessment strategies aimed to determine the seismic behavior by incorporating corrosion deterioration phenomena. An easy‐to‐use phenomenological model is here developed to describe the seismic behavior of corroded RC elements based on a fiber hinge formulation wherein the corrosion‐induced mechanical degradation of concrete and steel is implemented through appropriate constitutive laws at the fiber level. The developed fiber hinge formulation is first validated against experimental cyclic tests of corroded RC columns from the literature. Then, the proposed approach is used for the seismic vulnerability assessment of the Zappulla multi‐span viaduct (southern Italy), whose RC bridge piers (with a box‐shaped, two‐cell hollow rectangular cross section) are exposed to carbonation and chloride‐induced corrosion. A comprehensive in‐situ testing campaign is conducted for the mechanical characterization of the materials in the RC piers. Corrosion potential mapping, carbonation tests and tensile tests on corroded bars extracted from RC piers are critically interpreted to calibrate the constitutive laws of the fiber‐hinge model. Motivated by experimental findings, numerical seismic analyses (including linear dynamic, nonlinear static and nonlinear dynamic analyses) are performed under two different corrosion scenarios to quantify the impact of corrosion on the resulting seismic vulnerability conditions of bridge piers with corroded bars. The proposed approach is characterized by low computational cost and lends itself to large‐scale seismic vulnerability assessment of other existing RC bridges placed in corrosive environment.

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“…Furthermore, it was found that every plastic hinge had been produced at performance levels that fell below the immediate occupancy limit. Zhang, et al [10] Analyzed six storey building to estimate its resistance to seismic events by utilizing SAP2000 software. The pushover analysis was used to estimate the storey drift and roof displacement.…”

Section: Introductionmentioning

confidence: 99%

Dynamic and pushover analysis of multi-storey reinforced concrete building using different load distribution pattern

Mahmood¹,

Mohamad²

2022

J Appl Eng Science

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One of nature's most dangerous phenomena are earthquakes which cause significant harm to both people's lives and property. In this study, four alternative approaches are used to demonstrate the distribution of lateral loads and compare its impacts on the results of a non-linear static pushover analysis of a ten-storey reinforced concrete (RC) building and study its response to the impact of an earthquake. In order to determine how the structure would respond to earthquake effects, pushover analysis which is an alternative way of time history analysis was adopted and the predicted results are compared with those of nonlinear time history analysis. Given that the building is situated in an area that is actively experiencing earthquakes and has rocky soil, the distributed lateral force is assumed to be equivalent to the design base shear. The study indicated an almost good suitable fit between two categories of pushover loading methods regarding security of the building, maximum base shear, and maximum displacement. The paper also presents a comparison between the results of nonlinear time history analysis at a particular roof displacement with that of pushover analysis.

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Seismic Performance of a Corroded Reinforce Concrete Frame Structure Using Pushover Method

Cited by 10 publications

References 25 publications

Pushover analysis for flexible and semi‐flexible pile‐supported wharf structures accounting the dynamic magnification factors due to torsional effects

Pushover analysis for flexible and semi‐flexible pile‐supported wharf structures accounting the dynamic magnification factors due to torsional effects

Seismic vulnerability assessment of reinforced concrete bridge piers with corroded bars

Dynamic and pushover analysis of multi-storey reinforced concrete building using different load distribution pattern

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