Considerations on the partial safety factor format for reinforced concrete structures accounting for multiple failure modes

Yu, Qianhui; Ruiz, Miguel Fernández; Muttoni, Aurelio

doi:10.1016/j.engstruct.2022.114442

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…Concerning the resistance side, the design value for a given level of reliability can be determined based on first order reliability method (FORM). 5,45 This is usually performed by considering the resistance function expressed in terms of a product of a series of variables:…”

Section: Acknowledgmentsmentioning

confidence: 99%

Reliability‐ and sustainability‐driven strategies for the maintenance of existing structures

Ruiz

Regúlez

Todisco

et al. 2023

Structural Concrete

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The management of existing structures is raising a number of pertinent questions to the owners and engineers. Many structures built more than 50 years ago (even those built hundreds of years ago) usually no longer comply with safety requirements of current codes, which are typically addressed in new structures. This is not necessarily only caused by a poor original design or degradation with time, but it may be, for example, the consequence of increase in actions, reducing the level of reliability of a structure. This paper focuses on strategies to be adopted for existing structures which do not comply with code requirements for new constructions (e.g., to repair, to demolish, to rebuild, etc.) on the basis of a more holistic approach that includes economic, social, and environmental considerations. To that aim, first, a brief review of the background concepts on the reliability of structures is presented, highlighting the differences for new and existing structures. Following this analysis, suitable values for the reliability index (including sustainability considerations) are proposed, as well as tailored maintenance strategies. Finally, the paper presents a case study based on a real project to emphasize the benefits of adopting such a holistic perspective.

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Section: Acknowledgmentsmentioning

confidence: 99%

Reliability‐ and sustainability‐driven strategies for the maintenance of existing structures

Ruiz

Regúlez

Todisco

et al. 2023

Structural Concrete

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“…AE-based machine learning methods have found wide adoption for tasks such as damage degree estimation, crack model recognition and acoustic source location in concrete structures (Omar et al, 2022;Yu et al, 2022). Machine learning-based pattern recognition falls into two major categories: supervised clustering and unsupervised clustering (Yu et al, 2023). In the absence of prior knowledge regarding AE signals, an unsupervised clustering algorithm was employed for the categorization of damage modes (Yue et al,, 2021).…”

Section: Introductionmentioning

confidence: 99%

Damage evolution analysis of concrete based on multi-feature acoustic emission and Gaussian mixture model clustering

Yu,

Liang,

2024

International Journal of Damage Mechanics

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In this work, a novel method for damage evolution analysis of concrete under uniaxial compression is proposed based on the multi-feature acoustic emission (AE) and the Gaussian mixture model (GMM) clustering. The hierarchical clustering algorithm is adopted to select optimal AE parameters, while multiple features of these parameters are generated through the principal component analysis (PCA). Then the concrete damage signals are separated by using the GMM clustering with multiple features. Meanwhile, the waveform signals associated with concrete damage in each cluster are validated using the Fast Fourier transform (FFT) and the continuous wavelet transform (CWT). Finally, the damage evolution process of concrete under uniaxial compression is divided based on the variation of AE characteristics. The results show that the frequency ranges of signals for micro-cracks, mixed cracks and friction of concrete under uniaxial compression are 20–30 kHz, 20–65 kHz, and 100–120 kHz, respectively. The damage process of concrete under uniaxial compression is divided into three stages according to the inflection points of the cumulative energy curve, namely the initial compaction stage, the crack formation stage and the failure stage.

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A sustainable solution for mitigating environmental corrosion in the construction sector and its socio-economic concern

Kanagaraj,

Priyanka,

Anand

et al. 2024

Case Studies in Construction Materials

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Considerations on the partial safety factor format for reinforced concrete structures accounting for multiple failure modes

Cited by 6 publications

References 24 publications

Reliability‐ and sustainability‐driven strategies for the maintenance of existing structures

Reliability‐ and sustainability‐driven strategies for the maintenance of existing structures

Damage evolution analysis of concrete based on multi-feature acoustic emission and Gaussian mixture model clustering

A sustainable solution for mitigating environmental corrosion in the construction sector and its socio-economic concern

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