Multiobjective optimization for modular unit production lines focusing on crew allocation and production performance

Hyun, Hosang; Yoon, Inseok; Lee, Hyunsoo; Park, Moonseo; Lee, Jeong-Hoon

doi:10.1016/j.autcon.2021.103581

Cited by 19 publications

(7 citation statements)

References 45 publications

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“…In the prefabrication process, the cost of production resources accounts for more than 50% of the total cost (Li et al, 2010;Yazdani et al, 2021), and production resource management directly affects the productivity of PCs and execution of the PPS scheme (Wang et al, 2020a). Consequently, many researchers have incorporated production resource management strategies in PPS optimization studies, including worker allocation strategies (Al-Bazi and Dawood,2010;Wang et al, 2018b;Hyun et al, 2021), usage plans for production molds (Benjaoran and Dawood, 2005;Li et al, 2010;Khalili and Chua, 2014), and workspace layout plans (Ko and Wang, 2010;Li et al, 2010). In the next sections, we discuss how to optimize the PPS from the resource perspective in terms of workers, molds, and workspaces.…”

Section: Internal Resource Constraintsmentioning

confidence: 99%

Precast production scheduling in off-site construction: Mainstream contents and optimization perspective

Wang

Zhao

Yin

2023

Journal of Cleaner Production

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Section: Internal Resource Constraintsmentioning

confidence: 99%

Precast production scheduling in off-site construction: Mainstream contents and optimization perspective

Wang

Zhao

Yin

2023

Journal of Cleaner Production

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“…In literature, various terminologies are used to refer to OSC according to the material used or structure type, such as modular construction [14], modular integrated construction [15], prefabricated prefinished volumetric construction [16], precast construction [17], modern methods of construction [18], prefab construction [12], and industrialized building systems [19]. Moreover, OSC has been considered a promising approach for reducing the negative effects of construction at a designated site [1,3], mitigation of shortage of skilled labor [20], shortened and flexible project duration [14], reduced construction waste [2], application of environment-friendly methods [21], minimization of project cost and cost variation by elements standardization, and by producing elements in an environmentally controlled factory [4]. The benefits of OSC are attributed to the manufacturing of building elements in an environmentally controlled factory.…”

Section: Literature Review 21 Background Of Oscmentioning

confidence: 99%

Integrated Off-Site Construction Design Process including DfMA Considerations

Hyun

Kim

2022

Sustainability

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Off-site construction (OSC) offers a promising means to improve the efficiency of construction projects. However, the lack of experience and knowledge regarding its use results in errors in design owing to conflicts and omissions of considerations for OSC projects. To mitigate these problems, the design for manufacturing and assembly (DfMA) is widely used to include the considerations in the OSC design process. Several studies concerning the DfMA application in OSC have been performed, but the comprehensive design process is not suggested for mitigating the aforementioned problems. This study proposes an OSC design process by integrating the fragmented DfMA considerations reported in previous studies. The considerations are identified through a systematic literature review and classified into structural and architectural types. To validate the proposed process, an OSC project design has been undertaken as a case study, wherein a significant portion of the building structure has been modified to comprise precast concrete (PC), instead of its reinforced counterpart, with a demonstrated reduction in the PC element design duration. The proposed process would guide and support the design process for reduction in the duration and errors incurred in the process. Moreover, the process can be considered a design guideline for the execution of future projects.

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“…Optimization algorithms determine the best solution by building a numerical model and solving heuristic algorithms, which are often used for scheduling and cost analysis. Heuristic algorithms currently used in SROSC include genetic algorithms (Dan et al 2021;Hyun et al 2021), particle swarm optimization (Liu et al 2019a), algorithm solvers (Ma et al 2018), and novel algorithms developed by researchers (Ma et al 2021;Rausch et al 2021). Topic 3: Optimization-Based Information Technologies.…”

Section: Topic Analysismentioning

confidence: 99%

“…(2) For environmental sustainability, controllable production and scale effects can maximize energy efficiency, reduce greenhouse gas emissions, and eliminate wet-trade pollution and waste, thereby contributing to the sustainability of the construction process and the built environment (Hong et al 2016b;Tam and Hao 2014;Teng et al 2018). (3) For social sustainability, the OSC can actively respond to labor shortages and benefit occupational health and community disturbance; this people-oriented approach benefits social sustainability (Ahn et al 2020;Hyun et al 2021;Kordi et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Understanding Sustainability in Off-Site Construction Management: State of the Art and Future Directions

Luan

Yin

et al. 2022

J. Constr. Eng. Manage.

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Many countries and regions consider off-site construction a modern construction method that facilitates sustainability in the construction industry. Sustainability research in off-site construction (SROSC) is crucial for its development and is a nonnegligible part of its management. However, an in-depth understanding and critical analysis of SROSC to summarize recent research and inform future research directions are lacking. In this study, we address this issue by offering a mixed-review method integrating scientometric analysis and systematic review to explore state-of-the-art SROSC. We aim to uncover sustainability themes and topics, distinguish research trends, and identify gaps in knowledge that can be addressed in future research. Scientometric analysis was used to perform statistical analysis and visual map research on the knowledge landscape formed by 272 related studies of SROSC. The systematic review was used to identify and analyze six major knowledge themes (e.g., environmental, economic, social, decision-making, optimization, and industry management) and 21 knowledge topics for SROSC. We proposed possible future research directions based on the resulting structured body of knowledge. This research contributes to the body of knowledge by visualizing and analyzing the state-of-the-art of SROSC, as well as identifying the future research directions in this area to improve architectural, engineering, and construction practices.

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Multiobjective optimization for modular unit production lines focusing on crew allocation and production performance

Cited by 19 publications

References 45 publications

Precast production scheduling in off-site construction: Mainstream contents and optimization perspective

Precast production scheduling in off-site construction: Mainstream contents and optimization perspective

Integrated Off-Site Construction Design Process including DfMA Considerations

Understanding Sustainability in Off-Site Construction Management: State of the Art and Future Directions

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