Experimental and numerical study of self-locking adaptable inter connection for modular steel structures

Nadeem, Gohar; Safiee, Nor Azizi; Bakar, Nabilah Abu; Karim, Izian Abd; Nasir, Noor Azline Mohd

doi:10.1016/j.jobe.2022.105723

Cited by 4 publications

(5 citation statements)

References 21 publications

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“…These include bolted connection with a plug-in device, connection or extended endplate [158] and additional inner sleeve to connect upper and lower columns with floor and ceiling beams [169]. Other connection systems proposed for the steel modules include various combinations of bolted and welded joints [167], the plug-in and self-lock joints [170,171], the self-centring connections [118], the post-tensioned inter-module connection [172] and the VectorBloc connector-the connector part designed for the hollow steel frames that allow 3D connection of beams and columns [173]. Composite steel-concrete and concrete systems are commonly connected through the wet joints, in which grout or concrete is used to lock the connections [164,166].…”

Section: Modular Constructionmentioning

confidence: 99%

Environmentally Friendly Smart Construction—Review of Recent Developments and Opportunities

Shufrin,

Pasternak,

Dyskin

2023

Applied Sciences

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Modern economic, social and environmental challenges require a new type of construction that ensures resilience, low construction costs and ease of maintenance. Material production, manufacturing of structural elements and final assembly should minimise the environmental impacts, such as greenhouse emissions and waste production. This review aims to identify the key routes of research and development required to address the environmental challenges the construction industry faces. It outlines recent advances and highlights the rising opportunities. The strategies with great perspectives include 3D concrete printing, prefabrication and modular construction, mortarless construction, development and utilization of sustainable, smart and composite materials, renewable energy systems and automation technologies including the Digital Twin technology. Hybrid approaches that combine traditional and novel construction methods present the greatest potential. Overall, collaboration between stakeholders is crucial in driving innovation and successfully implementing these advancements.

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Section: Modular Constructionmentioning

confidence: 99%

Environmentally Friendly Smart Construction—Review of Recent Developments and Opportunities

Shufrin,

Pasternak,

Dyskin

2023

Applied Sciences

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“…Yet they raise questions regarding the accommodation of installation tolerances without compressing the slip (deformation) precautions [21,49]. This ambiguity underscores the importance of further research in this area; in Typically, inter-module connections are investigated using experimental programmes, and their outcomes are verified using analytical and numerical research [21,38,[55][56][57][58][59][60][61][62][63][64]. The only approaches that can be used to investigate the impact of the interlocking (IMCs) plate thickness are experimental programmers and numerical simulation using the FE methods [65][66][67][68][69].…”

Section: Introductionmentioning

confidence: 99%

Optimising Plate Thickness in Interlocking Inter-Module Connections for Modular Steel Buildings: A Finite Element and Machine Learning Approach

Elsayed,

Mutalib,

Elsayed

et al. 2024

Preprint

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Modular steel buildings (MSBs) interlocking inter-module connections (IMCs) have piqued researchers’ interest. However, the existing literature has not yet studied the optimisation of its plate thicknesses. This paper, therefore, focuses on optimising interlocking (IMCs) plate thickness in (MSBs), leveraging previous experimental and numerical simulation methodologies. Various numerical models for four MSBs interlocking (IMCs) with plate thicknesses (4 mm, 6 mm, 10 mm, and 12 mm) were developed under compression loading conditions. The study’s novelty lay in its comprehensive parametric analysis, which evaluated the slip phenomenon in (MSBs) connections and introduced a slip prediction model validated against empirical data. Further innovative machine learning approach was utilised to predict slip values based on applied force through a random forest regression model trained using the 'Treebagger' function. Sensitivity analysis and comparisons with alternative methods were utilised to underscore the reliability and applicability of the findings. The results showed that 11.03 mm was the optimal plate thickness for interlocking (IMCs) in modular steel buildings, with up to 8.08% reduced material costs. Increasing plate thickness boosts its deformation resistance by up to 50.75%. ‘TreeBagger’ random forest for anomaly detection and machine learning improves slip prediction up to 7% at higher force levels.

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“…Buildings 2024, 14, x FOR PEER REVIEW 3 of 27 scores the importance of further research in this area; in this context, the choice of plate thickness for interlocking (IMCs) is pivotal as it directly influences the connection's ability to distribute stresses and resistance deformation under load. Typically, IMCs are investigated using experimental programmes, and their outcomes verified using analytical and numerical research data [7,20,34,[50][51][52][53][54][55][56][57][58]. The only approaches that can be used to investigate the impact of the interlocking (IMCs) plate thickness are experimental programmers and numerical simulation using the Finite Element (FE) methods [59][60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

“…The study also introduces a comprehensive sensitivity analysis, a step forward in identifying errors and anomalies and comparing the results with alternative methods (linear regression analysis and anomaly detection) and introduces a single-objective optimisation model where its goal is to maximise a composite measure of interlocking (IMCs) plate material properties against economic cost. This paper is organised as follows: Section 2 describes the methodology, focusing on modelling methods and plate Typically, IMCs are investigated using experimental programmes, and their outcomes verified using analytical and numerical research data [7,20,34,[50][51][52][53][54][55][56][57][58]. The only approaches that can be used to investigate the impact of the interlocking (IMCs) plate thickness are experimental programmers and numerical simulation using the Finite Element (FE) methods [59][60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

Optimising Plate Thickness in Interlocking Inter-Module Connections for Modular Steel Buildings: A Finite Element and Random Forest Approach

Elsayed,

Mutalib,

Elsayed

et al. 2024

Buildings

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Interlocking Inter-Module Connections (IMCs) in Modular Steel Buildings (MSBs) have garnered significant interest from researchers. Despite this, the optimisation of plate thicknesses in such structures has yet to be extensively explored in the existing literature. Therefore, this paper focuses on optimising the thickness of interlocking IMCs in MSBs by leveraging established experimental and numerical simulation methodologies. The study developed various numerical models for IMCs with plate thicknesses of 4 mm, 6 mm, 10 mm, and 12 mm, all subjected to compression loading conditions. The novelty of this study lies in its comprehensive parametric analysis, which evaluates the slip prediction model. A random forest regression model, trained using the ‘TreeBagger’ function, was also implemented to predict slip values based on applied force. Sensitivity analysis and comparisons with alternative methods underscored the reliability and applicability of the findings. The results indicate that a plate thickness of 11.03 mm is optimal for interlocking IMCs in MSBs, achieving up to 8.08% in material cost reductions while increasing deformation resistance by up to 50.75%. The ‘TreeBagger’ random forest regression significantly enhanced slip prediction accuracy by up to 7% at higher force levels.

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Experimental and numerical study of self-locking adaptable inter connection for modular steel structures

Cited by 4 publications

References 21 publications

Environmentally Friendly Smart Construction—Review of Recent Developments and Opportunities

Environmentally Friendly Smart Construction—Review of Recent Developments and Opportunities

Optimising Plate Thickness in Interlocking Inter-Module Connections for Modular Steel Buildings: A Finite Element and Machine Learning Approach

Optimising Plate Thickness in Interlocking Inter-Module Connections for Modular Steel Buildings: A Finite Element and Random Forest Approach

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