System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

Zhang, R. H.; Goh, Anthony Teck Chee; Zhang, W. G.

doi:10.1007/s42452-019-0938-x

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Compared with non-urban excavations, urban excavations pose a greater risk of ground movements that can affect neighboring structures and facilities (Son and Cording, 2005). The increasing construction of underground spaces has significantly increased the advancement of theoretical and practical knowledge concerning the effects of deep excavations on neighboring buildings and underground structures, such as tunnels (Zheng et al, 2018(Zheng et al, , 2020 and piles (Zhang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, estimating the response of a building to excavation is necessary to ensure that it remains stable and undamaged during and after the excavation. Soil properties (Zhao et al, 2019), topographic site conditions (Shabani et al, 2021), excavation geometry (Zhang et al, 2019; Engineering Computations 1529 Data availability statement: Some or all data, models or codes generated or used during the study are proprietary or confidential in nature, and may only be provided with restrictions.…”

Section: Introductionmentioning

confidence: 99%

“…, 2019), topographic site conditions (Shabani et al. , 2021), excavation geometry (Zhang et al. , 2019; Ying et al.…”

Section: Introductionmentioning

confidence: 99%

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New design charts for evaluating the damage potential to RC frame buildings adjacent to deep excavations

Tahmoures,

Ghanbari

2024

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PurposeUrban excavations are a cause for concern in terms of the probability of damage to nearby structures. In this study, various structural and excavation parameters were investigated to determine the probability of building damage during excavations.Design/methodology/approachFinite-element analysis software was used to develop a set of valid three-dimensional models. Models were developed to assess the effects of structural parameters (building height and position relative to the excavation site) and excavation parameters (depth and support system type) on the responses of the adjacent buildings.FindingsThe new design charts estimated the damage to reinforced concrete frame buildings during excavation by focusing on the angular distortion of the building, additional shear strain on the masonry walls and additional strain and stress on columns. This study showed that the probability of damage decreased as the distance between the building and the excavation increased. By contrast, it increased when the building was located at a distance equal to the excavation depth at its edge. According to this study, the axial stress caused by the excavation of building columns does not exceed 10.9% of the compressive strength of the concrete.Originality/valueThe proposed design charts can replace comparable charts and provide a deeper understanding of damage potential based on key parameters. These charts are more practical than previous charts with limited parameters.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New design charts for evaluating the damage potential to RC frame buildings adjacent to deep excavations

Tahmoures,

Ghanbari

2024

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“…Moreover, the hybridisation of these algorithms, such as CS with boundary constraint (CS-EB) [51], PSO with HS (PSO-HS) [52], ACO with simulated annealing (ACO-SA) [53], and GSA with sequential quadratic programming (GSA-SQP) [54] are used. Furthermore, artificial neural networks (ANNs) [55][56][57][58][59][60][61][62][63][64], reliability index [65] and fuzzy logic [66] have also been used to analyse the stability of slopes and earth dams. These studies indicate the potential of metaheuristic algorithms for assessing slope stability.…”

Section: Introductionmentioning

confidence: 99%

Slope stability analysis using recent metaheuristic techniques: a comprehensive survey

2019

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In the framework of designing civil engineering structures such as dams and road embankments, slope stability assessment is essential. Many slope stability assessment methods based on swarm intelligence algorithms and artificial intelligence techniques have been developed in the past decade. Therefore, this paper aims to provide an up-to-date overview of slope stability by summarizing the review of applications of several metaheuristics in this field with their advantages and limitations. In this study, we present recent swarm intelligence methods and machine learning techniques used for assessing the stability of slopes and compare them with the antlion optimiser (ALO) technique. The factor of safety related to every slip surface searched was computed using Morgenstern-Price method. The performance of the proposed ALO is evaluated and validated for four slope examples against recent metaheuristics. Finally, the work carried out will help practitioners as they can now have all swarm intelligence approaches combined in one paper and will help in choosing them the right technique based on their application.

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“…Apart from that, it seems that larger values of the parameters kandk c result in more reliable structures. For some recent advances on the design optimization of systems, the interested reader is referred to [25,26].…”

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confidence: 99%

Combined m-Consecutive-k-Out-of-n: F and Consecutive kc-Out-of-n: F Structures with Cold Standby Redundancy

Triantafyllou

2023

Mathematics

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In the present work, we study the combined m-consecutive-k-out-of-n: F and kc-out-of-n: F reliability systems, which consist of independent and identically distributed components. Two different redundancy policies are considered, and their general frameworks are described and illustrated. The main objective of the paper refers to the investigation of the effect of adding cold standby redundancy to the system at the the system level and the component level. Exact formulae for determining the crucial characteristics of the enhanced structure, such as its survival function, the mean time to failure and the mean residual lifetime, are provided. All formulae proved in the present manuscript are explicit expressions which are based on the signature vector of the resulting reliability schemes. An extensive numerical investigation is carried out to shed light on the performance of the combined m-consecutive-k-out-of-n: F and consecutive kc-out-of-n: F reliability systems with cold standby redundancy. Some concluding remarks and comments are provided upon the determination of the optimal design parameters.

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System reliability assessment on deep braced excavation adjacent to an existing upper slope in mountainous terrain: a case study

Cited by 11 publications

References 29 publications

New design charts for evaluating the damage potential to RC frame buildings adjacent to deep excavations

New design charts for evaluating the damage potential to RC frame buildings adjacent to deep excavations

Slope stability analysis using recent metaheuristic techniques: a comprehensive survey

Combined m-Consecutive-k-Out-of-n: F and Consecutive kc-Out-of-n: F Structures with Cold Standby Redundancy

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