Abstract
Since the concept of building information modeling (BIM) was introduced in South Korea in 2008, digital fabrication concerning free-form shapes and complex parametric information has been expanding owing to the development of BIM software and tools. However, the digital fabrication process is inadequate in terms of efficiency and productivity because of the need to convert from conventional two-dimensional (2D) drawings to a BIM design; this adversely affects the unified design, fabrication, installation, and inspection processes. Moreover, an optimized process has not been developed thus far because the productivity of digital fabrication has not been quantitatively verified for various projects in the field. This study proposes a BIM-based digital fabrication process for prefabricated parts of buildings. In addition, a productivity analysis method based on the queuing model is proposed using personnel input and performance calculation data to verify productivity. It is expected that the digital fabrication process and productivity analysis model proposed here will be applied to complex digital fabrication works.
Highlights
Since the concept of building information modeling (BIM) was introduced in South Korea in 2008, digital fabrication concerning free-form shapes and complex parametric information has been expanding owing to the development of BIM software and tools
Since the BIM concept was introduced in Korea in 2008, efforts have been made to overcome the problem of productivity degradation in the life cycles of construction projects [4]
computerized numerical control (CNC) T-BAR call-out view construction project, the unification, simplification, and automation levels of major tasks, such as automation design technology, fabrication drawing production automation technology, and construction quality control technology, were found to be more satisfactory than those of cases which are implemented through traditional BIM implementation methods
Summary
Since the concept of building information modeling (BIM) was introduced in South Korea in 2008, digital fabrication concerning free-form shapes and complex parametric information has been expanding owing to the development of BIM software and tools. Building information modeling (BIM) technology has been rapidly replacing conventional construction models, such as two-dimensional computer-aided design (2D CAD), paper documents, and Excel chart-based schedules, by improving the technical level of construction automation, introducing BIM-based innovations, and application of integrated project delivery (IPD) method in several countries. BIM can integrate design, manufacturing, and construction processes to increase the level of transparency and interoperability among partners in construction projects that use prefabricated components [7]. Based on this advantage, BIM-based digital fabrication technology simplifies the procurement process in construction and improves the productivity of the workflow between designers, builders, and those involved in the manufacturing of construction components [8]. Automatic member shape recognition and fabrication are possible by inputting parametric BIM fabrication data into the member production process of the computerized numerical control (CNC) machine
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