Analysis of Predictive Maintenance for Tunnel Systems

Tichý, Tomáš; Brož, Jiří; Bělinová, Zuzana; Pirník, Rastislav

doi:10.3390/su13073977

Cited by 24 publications

(11 citation statements)

References 23 publications

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“…Modern management practice requires more complex tools for a wide range of routine management decisions, such as cost-benefit analysis, decision trees, game theory, heuristic methods, optimization, etc. Increased industrial production and productivity require more sophisticated tools for analysis [10] and decision support, which will fundamentally depend on better decision analysis [11,12]. Extensive studies of the escalation of durations and costs in major projects yield surprising results [13].…”

Section: Publication Frequencymentioning

confidence: 99%

Time–Cost Schedules and Project–Threats Indication

et al. 2022

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One of the most common disciplines in a business or economic project is timing and resource review. Despite the frequency of use, the level of sophistication is not high enough to maintain its level of importance. Exceeding deadlines and non-compliance with contractual costs is more than common. Moreover, there are projects where uncertainties are a naturally accompanying phenomenon. Research projects, implementation of solutions in a time-limited situation, or in an environment of limited knowledge creates risk. Any project proposal faces future realization risks when its planning management does not know with certainty where the current risks and uncertainties may come from. Decision-making, risk management dynamics, and simulations have developed in recent decades into an erudite and useful discipline. The aim is to indicate how much of the time–cost schedule proposal is stable, controllable, and economically feasible. The approach is based on the idea that modern resource scheduling requires nonlinear dynamic calculating models and simulations. The methodology presented is based on the dynamics of underlying physical and economic processes that form a spatial pattern of a time series. The article’s objective is devoted to the early indication of a dynamic project schedule’s instability and predisposition to bifurcation and chaos. In other words, the aim is to show not only what will happen but how diverse and damaging the project may become in the future.

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Section: Publication Frequencymentioning

confidence: 99%

Time–Cost Schedules and Project–Threats Indication

et al. 2022

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“…Relevant indicators for the safety evaluation of shield tunnel structures involve various standards and norms in China (CJJ/T 289-2018, 2018; Bergeson and Ernst, 2015; Eskesen et al , 2004). The corresponding reference indexes and classification standards have been proposed for the leakage rate, curvature deformation limit, crack opening, judgment standard of lining strength, misalignment, void and track bed (Andreotti et al , 2020; Kimura et al , 2019; Tichý et al , 2021). Among them, qualitative indicators are determined by a ten-point scoring method.…”

Section: Case Studymentioning

confidence: 99%

A comprehensive evaluation method and application of shield tunnel structure health based on variable weight theory

Sun

2022

IJSI

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PurposeIn order to improve the comprehensive evaluation level of shield tunnel structure health, taking a subway tunnel section as an example, and combined with the onsite measured data, such as regular inspection, health monitoring and disease remediation, this paper introduces the variable weight theory to improve the traditional fixed-weight evaluation method from structural deformation, current durability and disease status.Design/methodology/approachConsidering the influence of the fluctuation of each index value on the index weight, a comprehensive structural health evaluation model of shield tunnel based on an improved variable weight matter-element extension model is proposed.FindingsCompared with the traditional fixed-weight evaluation method, this model can correct the evaluation distortion caused by the fluctuation of index value and has optimal effect.Originality/valueThe sensitive analysis shows that several key indicators of the main threats to tunnel structure are obtained to improve the efficiency of operation, maintenance and management of shield tunnel structure.

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“…In order to reduce the influence of size effect on the accuracy of numerical simulation, the model size is set to 90 m × 90 m × 90 m, and the model has 52460 units. A three-dimensional incongruent element with eight nodes is used for soil [28], and an integral three-dimensional element with eight nodes is used for pile wall and tunnel structure.…”

Section: Finite Element Model Constructionmentioning

confidence: 99%

Numerical Simulation Algorithm Design of Influence on Existing Tunnel by Underpass Construction of New Tunnel

2021

Scientific Programming

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Simulation is a powerful tool that can be used for systematic planning, analysis, and decision-making. Proper designing is preliminary required to construct a new tunnel over an existing tunnel to ensure safety and durability. Once an underpass tunnel completes, the interaction between the tunnel structure and the nearby soil gains a stable state and the stress of the tunnel is balanced. However, the stability of an existing tunnel is affected if the construction in the nearby area is not properly analyzed. This article proposes a numerical simulation model to empirically analyze lining force and surface settlement in order to ensure safety in engineering practice. The existing tunnel structure working condition is simulated under the new tunnel. The artificial honeybee colony algorithm is used to extract the parameter fusion characteristic value of tunnel influence and the model of estimating the bending moment of group piles. The structural mechanics of existing tunnels under new tunnels are analyzed using the triple bend model to improve the bearing capacity of existing tunnels under new tunnels. Based on the above analysis, numerical simulation experiments are designed. The proposed method has high accuracy and strong fitting ability and can effectively reduce the displacement of existing tunnels. Moreover, the method can improve the bearing capacity of tunnels. For tunneling operation, the results of the simulation may be used as a recommendation.

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Analysis of Predictive Maintenance for Tunnel Systems

Cited by 24 publications

References 23 publications

Time–Cost Schedules and Project–Threats Indication

Time–Cost Schedules and Project–Threats Indication

A comprehensive evaluation method and application of shield tunnel structure health based on variable weight theory

Numerical Simulation Algorithm Design of Influence on Existing Tunnel by Underpass Construction of New Tunnel

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