Improved Interval Evidence Theory–Based Fuzzy AHP Approach for Comprehensive Condition Assessment of Long-Span PSC Continuous Box-Girder Bridges

Yang, Yiming; Peng, Jiawei; Cai, C.S.; Zhang, Jianren

doi:10.1061/(asce)be.1943-5592.0001494

Cited by 22 publications

(9 citation statements)

References 43 publications

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“…Hierarchical analysis is a subjective assignment method; it is a simple, flexible and practical multi-criteria decision-making method for quantitative analysis of qualitative problems [15]. The calculation steps for hierarchical analysis to determine the weights of evaluation indicators are as follows:…”

Section: Hierarchical Analysismentioning

confidence: 99%

Reliability Assessment of Highway Bridges Based on Combined Empowerment–TOPSIS Method

Zhou

et al. 2022

Sustainability

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(1) In recent years, with the continuous increase of the state’s investment in infrastructure, the construction of highways and bridges has developed rapidly, which has brought great convenience to people’s lives. At the same time, with the increase of bridge service time, the reliability of bridges declines. In order to meet the requirements of sustainable development, it is necessary to accurately evaluate the reliability of bridges. However, most of the existing evaluation methods have single-weighting and one-sidedness. There are problems such as strong subjectivity and overly simple evaluation procedures. Therefore, it is urgent to establish a new scientific bridge reliability evaluation system. (2) Methods. In this paper, a bridge superstructure is taken as the research object, and the “Technical Condition Assessment Standard for Highway Bridges” (JTG/T H21-2011) is used as the criterion to establish a bridge reliability evaluation index system. The subjective and objective weights of the evaluation indicators are based on minimum discriminant information. Each evaluation indicator is combined and weighted; then, the closeness of each evaluation object to the positive ideal solution is determined according to Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). Finally, the reliability level of each evaluation object is determined. (3) Results. Reliability evaluation of the three-span superstructure of the bridge was carried out, and final reliability evaluation results of “Grade 2, Grade 2, Grade 2” were obtained, which are consistent with the actual working state of the bridge. (4) Conclusions. The evaluation results of this paper are consistent with the results obtained by the traditional AHP–Extenics method, but the evaluation model of this paper adopts combined weighting, which avoids the one-sidedness of the weighting of a single method—thus, the comprehensive weight obtained not only reflects the subjective intention of decision makers, but also reflects the objective properties of the data.

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Section: Hierarchical Analysismentioning

confidence: 99%

Reliability Assessment of Highway Bridges Based on Combined Empowerment–TOPSIS Method

Zhou

et al. 2022

Sustainability

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“…Corrosion is the main cause of the deterioration of concrete structure [31][32][33], and one of its direct effects is the cross-sectional area loss of prestressing and nonprestressing steels [24]. Here, the most used pitting model proposed in [34] is adopted to calculate the cross-sectional area of nonprestressing steel after corrosion.…”

Section: Time-dependent Corrosion Modelmentioning

confidence: 99%

Prediction of Long‐Term Prestress Loss and Crack Resistance Analysis of Corroded Prestressed Concrete Box‐Girder Bridges

Yang

Tang

Mao

et al. 2022

Advances in Civil Engineering

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Reasonable assessment of long-term prestress loss and crack resistance is essential to ensure the service performance of prestressed concrete (PC) bridges. In this paper, a novel prediction model of long-term prestress loss considering the coupling effect of shrinkage and creep of concrete, prestressing steel relaxation, and presence of nonprestressing steel as well as the corrosion of prestressing and nonprestressing steel is proposed. Then, the probability analysis approach of long-term prestress loss considering the uncertainties of calculation parameters and models is introduced. Moreover, the assessment approach of crack resistance of local and overall structure is also developed, taking into account the effect of corrosion and time-dependent long-term prestress loss. The previously proposed approaches are applied to a three-span PC box-girder bridge. It is found that the prediction results of long-term prestress loss have high uncertainty, and the upper bound of long-term prestress loss at the confidence level of 95% is approximately 50% higher than the result obtained by deterministic analysis. The effect of corrosion on the long-term prestress loss is basically negligible, and the crack resistance of bottom slab and web is more sensitive to the coupled effect of corrosion and long-term prestress loss than that of top slab. Additionally, setting vertical prestressing tendons is conducive to improving the crack resistance level of web and whole section.

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“…Performance evaluation of in-service bridges, especially large-scale bridges, is a critical and sophisticated systematic project for the bridge maintenance and management (Chen et al, 2020;Liu et al, 2009;Yang et al, 2019). Abundant existing research works have been presented, including condition evaluation (Bolar, 2013;Gattulli and Chiaramonte, 2005), reliability assessment (Frangopol et al, 2008;Xia et al, 2012;Liu et al, 2017;Liu et al, 2020), and load testing evaluation (Caglayan et al, 2012;Faber et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Li et al (2011) proposed a hierarchical structure for synthetic rating of each structural component by using measurements from structural health monitoring (SHM) system, where the evaluation result could help make decisions of inspection policy. Yang et al (2019) presented a comprehensive condition assessment of long-span pre-stressed concrete continuous box-girder bridges, where the original interval evidence theory-based fuzzy AHP approach was employed. Sharafi (2016a, 2016b) proposed a systematic study for condition assessment and priority ranking of bridges using AHP, where the priority index was created for owners to understand and compare the overall condition of multiple bridges within the transport networks.…”

Section: Introductionmentioning

confidence: 99%

An Age- and Condition-Dependent Variable Weight Model for Performance Evaluation of Bridge Systems

Ren

Liu

et al. 2021

KSCE J Civ Eng

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To address the balance problem between indexes within the performance evaluation of bridge systems, this paper develops an age-and condition-based variable weight model (ACVWM). First, the limitations of existing models used for the multi-layer weighted sum method, i.e., constant weight model (CWM) and condition-based variable weight model (CVWM), are presented through case studies, indicating that the weight variation is insufficient to characterize the deterioration law of components. Then, the definition of age-based variable weight is established following the existing concept of condition-based variable weight, which makes weights vary with service ages. Considering the characteristics of bridge assessment, an age-based variable weight model is built up to depict the time-variant trends of index weights with the service age. The variation law of age-based variable weight is discussed by using indexes in the superstructure of suspension bridges. As a result, the weights of replaceable and permanent components behave differently within the bridge service life. Finally, the ACVWM is built up and its effectiveness is verified through the same case studies applied to the CWM and CVWM. Compared with the evaluation results from the CWM and CVWM, the evaluation result of the ACVWM is more in line with the real maintenance strategy. Considering the CVWM in which low initial weights may lead to unsatisfactory weight assignment, the advantage of the proposed ACVWM lies in its capability to adjust initial weights over the service age.

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Improved Interval Evidence Theory–Based Fuzzy AHP Approach for Comprehensive Condition Assessment of Long-Span PSC Continuous Box-Girder Bridges

Cited by 22 publications

References 43 publications

Reliability Assessment of Highway Bridges Based on Combined Empowerment–TOPSIS Method

Reliability Assessment of Highway Bridges Based on Combined Empowerment–TOPSIS Method

Prediction of Long‐Term Prestress Loss and Crack Resistance Analysis of Corroded Prestressed Concrete Box‐Girder Bridges

An Age- and Condition-Dependent Variable Weight Model for Performance Evaluation of Bridge Systems

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