Unit modular in-fill construction method for high-rise buildings

Park, Hyung Keun; Ock, Jongho

doi:10.1007/s12205-015-0198-2

Cited by 45 publications

(22 citation statements)

References 5 publications

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“…Therefore, information from the participants, such as unit production and onsite work manager, should be included and applied to the related design steps [18]. However, using conventional stick-built construction design processes for integrating the participants may also lead to rework in itself, although there may be no errors in the design [18,24]. This is because the stick-built design processes do not suggest when/what/how the information from the other participants is applied.…”

Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

“…For example, if a modular building structure is designed using the stick-built construction process, and the deformation of units during lifting is not considered in the design, damage to internal or external finishes caused by deformation may occur because the self-load increases during lifting. The damaged finish would need to be reworked onsite [24].…”

Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

“…This multilateral information exchange increases the complexity of the information flows, which acts as a source of errors-as identified earlier, omissions and conflicts. It has usually been difficult to handle this complexity because of unawareness and limited expertise in information flow management [18,22,24]. To alleviate the issue, information flows should be first identified, and then feedback in the flow should be managed to facilitate the design process.…”

Section: Information Flow In the Design Processmentioning

confidence: 99%

“…To facilitate the integration of participants and identification of the information flows in the design phase of a modular project, an integrated design process is required to ensure that the project is managed considering the entire project process, including design, unit production, transportation, erection, and performance [22,23]. However, designs are still established based on conventional stick-built construction methods, which are unsuitable for modular construction, and lack of expertise and knowledge in the marketplace make it difficult to recognize the need for the integrated design process [18,22,24]. This causes uncertainty in the design process, leading to unnecessary and inappropriate feedback, which may affect project performance [12,18,19,25].…”

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confidence: 99%

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Integrated Design Process for Modular Construction Projects to Reduce Rework

et al. 2020

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In modular construction projects, unit production and onsite work are conducted concurrently, enabling shorter duration, lower cost, and improved quality. Because of the nature of the work, building design details should be determined early in the design phase, which requires information from participants. However, the design process for stick-built construction does not include such information, which leads to errors in design, such as omissions and conflicts of information from participants, causing reworking in the design phase. To reduce errors, an information flow should be identified representing when/what/how the information should be shared, and with whom. This paper proposes an integrated design process based on the information flow. To identify the flow, a precedence relationship between activities is represented using a dependency structure matrix (DSM). Then, the order of activities is rearranged using a partitioning algorithm. In this manner, unnecessary feedback and reverse information flow, which are related to errors, are reduced. Finally, the rearranged activities are proposed as an integrated design process. To validate the impact of the proposed process and methodology, interviews with experts were conducted. The validation results suggest that the project delivery method should also be considered in the early project phase in practical application.

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Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

Section: Information Flow In the Design Processmentioning

confidence: 99%

mentioning

confidence: 99%

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Integrated Design Process for Modular Construction Projects to Reduce Rework

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“…Modular building system is a highly prefabricated system . The box‐type 3D modules can be conveniently positioned and interconnected on site.…”

Section: Introductionmentioning

confidence: 99%

Optimal lateral aseismic performance analysis of mega‐substructure system with modularized secondary structures

2017

Structural Design Tall Build

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Summary A major type of mega‐substructure system is yet to fulfill its full potential of vibration control because of the fragility originating from excessive inter‐story drift of its secondary structures during earthquake. We propose an innovative subtype of mega‐substructure system to overcome this fragility and further improve its lateral aseismic performance. This subtype takes advantage of modular construction techniques. The secondary structures, which consist of suspended discrete modules, provide protection to nonstructural members against excessive inter‐story drift. Additionally, springs that provide inter‐story stiffness remain elastic. These effects extend the inter‐story drift limit of secondary structure and make sufficient relative motion possible. We carried out single‐objective and dual‐objective optimizations to derive optimum parameters and capture the potentials of representative models. Mean square responses under power spectral density functions of ground acceleration were set as optimization objectives. It is shown that the proposed systems further suppress the response of primary structure at the expense of additional response of secondary structure, which can be accommodated by the aforementioned protection effect. Mechanisms are revealed in the perspective of transfer function curves. Robustness and time history performances are also verified.

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