Probabilistic life-cycle assessment and rehabilitation strategies for deteriorating structures

a case study

Elsa Garavaglia, Noemi Basso, Luca Sgambi

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    When it comes to existing buildings, the estimation of the structural residual bearing capacity is required to evaluate the potential for reuse/conversion. The level of detail and accuracy of surveys dramatically affect structural diagnostics. In order to optimise the experimental survey process, a simulation of the structural life-cycle may be useful. Based on a previously developed approach of Monte Carlo simulation implemented with a damage law for the life-cycle analysis of newly designed constructions, this paper presents the method application to a historic roof steel structure. It aims to identify critical situations, assess the residual life of the system, and plan possible retrofit strategies for the building conversion. The case study is a steel frame roof structure of the ex pig abattoir within the complex of the municipal slaughterhouse in Monza (close to Milan, Northern Italy) and protected from the Cultural Heritage Authority. The life-cycle of the structure is here investigated over different stages of the building lifespan along with the damages caused by aging and negligence. The construction was built in 1902, and abandoned in 1984. Therefore, the periods analysed are: from construction to disuse and from disuse to today. The second phase of life, still on going, has significantly sped up the degradation. The probabilistic evaluation of failure times is discussed and the possible interventions scenarios in terms of costs, and after-maintenance reliability and safety are investigated.

    Original languageEnglish
    Pages (from-to)1-16
    Number of pages16
    JournalInternational Journal of Architectural Heritage
    DOIs
    Publication statusAccepted/In press - 2018 Feb 15

    Fingerprint

    Patient rehabilitation
    Life cycle
    Roofs
    Steel structures
    Bearing capacity
    Aging of materials
    Degradation
    Steel
    Life Cycle
    Rehabilitation
    Costs
    Damage
    Monte Carlo simulation
    Monte Carlo Simulation
    Safety
    Historic
    Authority
    Diagnostics
    Cultural Heritage
    Evaluation

    Keywords

    • life-cycle
    • Monte Carlo simulation
    • structural aging

    ASJC Scopus subject areas

    • Conservation
    • Architecture
    • Visual Arts and Performing Arts

    Cite this

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    abstract = "When it comes to existing buildings, the estimation of the structural residual bearing capacity is required to evaluate the potential for reuse/conversion. The level of detail and accuracy of surveys dramatically affect structural diagnostics. In order to optimise the experimental survey process, a simulation of the structural life-cycle may be useful. Based on a previously developed approach of Monte Carlo simulation implemented with a damage law for the life-cycle analysis of newly designed constructions, this paper presents the method application to a historic roof steel structure. It aims to identify critical situations, assess the residual life of the system, and plan possible retrofit strategies for the building conversion. The case study is a steel frame roof structure of the ex pig abattoir within the complex of the municipal slaughterhouse in Monza (close to Milan, Northern Italy) and protected from the Cultural Heritage Authority. The life-cycle of the structure is here investigated over different stages of the building lifespan along with the damages caused by aging and negligence. The construction was built in 1902, and abandoned in 1984. Therefore, the periods analysed are: from construction to disuse and from disuse to today. The second phase of life, still on going, has significantly sped up the degradation. The probabilistic evaluation of failure times is discussed and the possible interventions scenarios in terms of costs, and after-maintenance reliability and safety are investigated.",
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