Risk based inspection planning for structural systems

Straub, Daniel; Faber, Michael Havbro

doi:10.1016/j.strusafe.2005.04.001

Cited by 193 publications

(113 citation statements)

References 16 publications

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“…The approach is motivated by practices in structural engineering for fixed offshore structures applied since the 1980s, where acceptance criteria for fatigue deterioration are determined as a function of the structural redundancy with respect to element failure (Kirkemo 1990, Moan 2005. The proposed method can be applied to determine acceptability of specific structures and inspection/maintenance strategies (Straub and Faber 2005b), or for calibration of safety factors for deterioration limit states in codes and standards.…”

Section: Introductionmentioning

confidence: 99%

Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems

Straub

Kiureghian

2011

J. Struct. Eng.

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A systematic approach to determining reliability-based acceptance criteria for deteriorating elements in structural systems is proposed, as a basis for calibration of safety factors in codes and standards and for verifying acceptability of inspection and maintenance strategies for specific structures. The goal is to establish deterioration acceptance criteria for the elements of a structural system in compliance with criteria formulated for the system. Existing methods significantly overestimate the deterioration reliability of redundant structural systems because they neglect the joint effect of deterioration failures of different elements. To more realistically capture the load-sharing behavior of deteriorating redundant structural systems, it is proposed to establish deterioration acceptance criteria based on easily computable, idealized structural systems, which are calibrated to the characteristics of the real structure. The approach is validated on an example structural system and is found to represent a significant improvement over current methods. The paper concludes with a study of the main factors influencing acceptance criteria of deterioration reliability.

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Section: Introductionmentioning

confidence: 99%

Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems

Straub

Kiureghian

2011

J. Struct. Eng.

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“…Types of Markov processes which are used for modelling stochastic deterioration are discrete time Markov process (Markov chains) and continuous time Markov process [9]. The Markov chain model is a widely applied technique in the performance assessment for deteriorating structures [10]. In this model, the structural deterioration process is regarded as structural condition state changes over discrete time intervals.…”

Section: Probabilistic Deterioration Modelsmentioning

confidence: 99%

Time-dependent Reliability Analysis of Timber-Concrete Composite Beams

Velimirović

Stojić

Djordjevic

et al. 2017

Period. Polytech. Civil Eng.

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“…In a similar way, Glisic et al [9] used VoI to quantify, in economic terms, the impact of monitoring on decision making. Straub and Faber [10] used decision and VoI theory to build an adaptive decision framework for identifying inspection planning strategies that minimize maintenance costs. In their framework, inspections are performed in a sequence, and the decision to perform an inspection is based on the outcome of the previous inspection.…”

Section: Introductionmentioning

confidence: 99%

Pre-posterior optimization of sequence of measurement and intervention actions under structural reliability constraint

Goulet

Kiureghian

2015

Structural Safety

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Document publié chez l'éditeur officielDocument issued by the official publisher Titre de la revue:Journal Title: Structural Safety AbstractIt is common to assess the condition of an existing infrastructure using reliability analysis. When, based on the available information, an existing structure has an estimated failure probability above the admissible level, the default solution often is to either strengthen or replace it. Even if this practice is safe, it may not be the most economical.In order to economically restore and improve our existing infrastructure, the engineering community needs to be able to assess the potential gains associated with reducing epistemic uncertainties using measurements, before opting for costly intervention actions, if they become necessary. This paper provides a pre-posterior analysis framework to (1) optimize sequences of actions minimizing the expected costs and satisfying reliability constraints, and (2) quantify the potential gain of making measurements in existing structures. Illustrative examples show that when the failure probability estimated based on the present state of knowledge does not satisfy an admissible threshold, strengthening or replacement interventions can be sub-optimal first actions. The examples also show that significant savings can be achieved by reducing epistemic uncertainties.

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Risk based inspection planning for structural systems

Cited by 193 publications

References 16 publications

Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems

Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems

Time-dependent Reliability Analysis of Timber-Concrete Composite Beams

Pre-posterior optimization of sequence of measurement and intervention actions under structural reliability constraint

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