Evaluation of System‐Reliability Methods for Cable‐Stayed Bridge Design

Bruneau, Michel

doi:10.1061/(asce)0733-9445(1992)118:4(1106)

Cited by 22 publications

(9 citation statements)

References 9 publications

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“…The distances between the cable anchors in the girders or in the towers are 30m. More details regarding the material and sectional properties and performance functions can be found by Bruneau (1992). In general, the cables are considered as brittle since the rupture of a stay cable is momentary.…”

Section: Failure Modes Of Cable-stayed Bridgesmentioning

confidence: 99%

“…However, the application of the system reliability to the safety assessment of long-span bridges, such as cable-stayed bridges, is still insufficient. Bruneau (1992) utilized system reliability method to analysis the ultimate global behavior of a cable-stayed bridge and discovered 9 potential failure patterns for the cable-stayed bridge. Estes and Frangopol (2001) presented a system model by combining ultimate and serviceability limit state of a highway bridge.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating System Reliability of Cable-Stayed Bridges Considering Cable Corrosion

Lu¹,

Liu²

2019

Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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The cables in a cable-stayed bridge are prone to fatigue damage and atmospheric corrosion, which directly affect the bridge safety. This study presents a framework for system reliability evaluation of in-service cable-stayed bridges subjected to cable degradation. The effect of cable strength degradation on the bridge reliability is demonstrated through simulation on a parallel-series system representation. Machine learning techniques are utilized to approximate the nonlinear and dynamic response surfaces of critical components due to cable rupture, and the system reliability is finally evaluated from the event tree established by the βunzipping method. Both short-span and long-span cable-stayed bridges are selected as prototypes to investigate the influence of cable degradation on the structural system reliability. System reliability of the bridge under ultimate limit state was analyzed. Numerical results show that: the intelligent algorithm is applicable in system reliability assessment of cablestayed bridges; the main failure sequence of the cable-stayed bridges is strength failure of cables in side-span followed by bending failure of towers in the cross section of tower and girder, and the second failure sequences is strength failure of cables in mid-span followed by bending failure of girders in root section; Degradation of cables is the main factor to influence on system reliability of cable-stayed bridges. Compared with fatigue damage of cables, the corrosion of cables leads to a larger decline of system reliability indices. It is important for managers to provide maintenance and prompt replacement measures in order to insure the system reliability of cable-stayed bridges in operational period.

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Section: Failure Modes Of Cable-stayed Bridgesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluating System Reliability of Cable-Stayed Bridges Considering Cable Corrosion

Lu¹,

Liu²

2019

Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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“…Cable‐stayed bridges that consist of many cable elements, deck, and pylons are generally known to be highly redundant and have multiple potential failure modes (Bruneau, 1992). Then, the collapse of a bridge occurs by taking multiple failure paths involving various intermediate damage or failure state after the initial failure.…”

Section: Applicationmentioning

confidence: 99%

Safety Assessment Using Imprecise Reliability for Corrosion‐Damaged Structures

Choi¹,

Seo²

2009

Computer aided Civil Eng

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Safety assessment procedure including imprecise reliability for corrosion-damaged structures is proposed in this article. The proposed procedure may be used for the safety assessment of corroded structures when the data for safety analysis are insufficient or when a decision for safety management is urgently required. In case exact measurement such as nondestructive test cannot be utilized to assess a corroded point for any reason, expert's estimation with simple visual inspection based on the data of nondestructive test at near point can be used. The system reliability-based safety assessment may then be performed approximately but rationally by simply converting the qualitative expert's estimation to quantitative terms in this proposed procedure. Moreover, the approximate safety expressed as a safety range could also be evaluated effectively in hazardous environments such as typhoon where data collection for deterioration is very difficult. The proposed safety assessment procedure using the imprecise reliability was also applied to a cablestayed bridge in Korea to demonstrate its effectiveness and applicability.

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“…As the computing method for the system reliability developed, the computing theories of the system reliability are used in practical bridges by some scholars. Bruneau [17] analyzed the system reliability of a medium-span cable-stayed bridge. Based on 14 possible plastic failure modes, first-order second-moment method (FOSM) is used to calculate the reliability index.…”

Section: Introductionmentioning

confidence: 99%

Study on the System Reliability of Steel-Concrete Composite Beam Cable-stayed Bridge

Jia¹,

Yu²,

Yan³

et al. 2016

TOCIEJ

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Steel-concrete composite beam cable-stayed bridge is a complicated system consisting of a composite beam, tower, and stayed cables. And the composite beam is composed of a steel beam, bridge deck and connectors, which has a different mechanical behavior from the general beam structure. In a word, the steel-concrete composite beam cable-stayed bridge is characterized by specific mechanical behavior and has many influencing factors. Thus, its safety analysis often cannot be easily implemented. This paper aims to study the component reliability of the steel-concrete composite beam based on the stochastic finite element method (SFEM) and the recognition of main failure modes in the system reliability of the cable-stayed bridge. For the component reliability of the steel-concrete composite beam, a nonlinear element model with 10 degrees of freedom (DOF) is adopted, which can consider the particular longitudinal slip effect between the steel and concrete. And the direct differential method (DDM) is used to deduce the response gradient of the element model. Meanwhile, the tower and the composite beam are considered as beam-column members to establish their limit state functions in the form of interaction equations. For the recognition of main failure modes in the system reliability, this paper proposes the concept of uniformity of the reliability index and the refinement strategy to improve theβ-unzipping method, which can identify the main failure modes or neglect the unnecessary non-main failure modes. Finally, a certain steel-concrete composite beam cable-stayed bridge is used to verify the effectiveness of the proposed method.

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Evaluation of System‐Reliability Methods for Cable‐Stayed Bridge Design

Cited by 22 publications

References 9 publications

Evaluating System Reliability of Cable-Stayed Bridges Considering Cable Corrosion

Evaluating System Reliability of Cable-Stayed Bridges Considering Cable Corrosion

Safety Assessment Using Imprecise Reliability for Corrosion‐Damaged Structures

Study on the System Reliability of Steel-Concrete Composite Beam Cable-stayed Bridge

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