Journal ArticleDOI
Life-cycle performance, management, and optimisation of structural systems under uncertainty: accomplishments and challenges 1
TLDR
In this paper, the authors highlight recent accomplishments in the life-cycle performance assessment, maintenance, monitoring, management and optimisation of structural systems under uncertainty, and identify challenges in this area.Abstract:
Our knowledge to model, analyse, design, maintain, monitor, manage, predict and optimise the life-cycle performance of structures and infrastructures under uncertainty is continually growing. However, in many countries, including the United States, the civil infrastructure is no longer within desired levels of performance and safety. Decisions regarding civil infrastructure systems should be supported by an integrated reliability-based life-cycle multi-objective optimisation framework by considering, among other factors, the likelihood of successful performance and the total expected cost accrued over the entire life-cycle. The primary objective of this paper is to highlight recent accomplishments in the life-cycle performance assessment, maintenance, monitoring, management and optimisation of structural systems under uncertainty. Challenges are also identified.read more
Citations
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Life-cycle performance of deteriorated concrete-filled steel tubular (CFST) structures subject to lateral impact
Chuan-Chuan Hou,Lin-Hai Han +1 more
TL;DR: In this article, a finite element analysis (FEA) model is established to simulate the performance of deteriorated concrete-filled steel tubular (CFST) columns subject to lateral impact and a parametric study is carried out to analyze the influence of salient parameters on the residual compressive strength of CFST subject to the coupled effects.
Journal ArticleDOI
Effects of the axial force eccentricity on the time-variant structural reliability of aging r.c. cross-sections subjected to chloride-induced corrosion
TL;DR: In this paper, a computational probabilistic approach is proposed to predict the time-evolution of the mechanical and geometrical properties of a r.c. structural element (i.e., bridge pier) subjected to corrosion-induced deterioration as a consequence of the diffusive attack of chlorides in order to evaluate its service life.
Journal ArticleDOI
On the accuracy of diffusion models for life-cycle assessment of concrete structures
Andrea Titi,Fabio Biondini +1 more
TL;DR: In this article, the influence of the diffusion model on the time-variant corrosion damage of concrete cross-sections is studied with reference to the local damage of the reinforcing steel bars and the global deterioration of bending moment curve capacity curves.
Journal ArticleDOI
Risk-Based Maintenance Optimization of Deteriorating Bridges
Duygu Saydam,Dan M. Frangopol +1 more
TL;DR: In this article, a novel risk-based maintenance optimization methodology for deteriorating bridges to find the optimum maintenance options and their timing is proposed, where the lifetime maximum value of expected losses associated with failure and the lifetime total expected maintenance cost are considered as the conflicting objectives.
Journal ArticleDOI
Life-Cycle Management of Fatigue-Sensitive Structures Integrating Inspection Information
TL;DR: In this paper, a probabilistic approach is proposed to find an optimum management plan for fatigue-sensitive structures by integrating the available information from inspection actions, which can provide managers the ability to make real-time decisions based on inspection results.
References
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TL;DR: In this article, the authors present the computer techniques, mathematical tools, and research results that will enable both students and practitioners to apply genetic algorithms to problems in many fields, including computer programming and mathematics.
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TL;DR: This book brings together the computer techniques, mathematical tools, and research results that will enable both students and practitioners to apply genetic algorithms to problems in many fields.
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TL;DR: The 2003 AASHTO Subcommittee on Design, Task Force on Geometric Design was held in Charleston, South Carolina during the period July 13 through July 16, 2003 as mentioned in this paper and the purpose of the meeting was to review several documents undergoing revision, review the proposed revisions to the superelevation discussion in the Green Book, consider future research, and other administrative matters of concern to the Task Force Membership.
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