Journal
JOURNAL OF BUILDING ENGINEERING
Volume 34, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jobe.2020.101924
Keywords
Free-form structure; 3D CAD; Wooden formwork; Labor productivity; Digital fabrication
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This study aims to develop a new unit construction method by integrating digital fabrication with conventional wooden construction technique to increase productivity and reduce on-site labor costs.
Since the advent of the modernist movement in architecture, organic shapes have attracted designers. Digital fabrication technology and three-dimensional computer-aided design have made the architectural design of free-form shapes much easier. However, the construction of these shapes still has many risks in terms of cost and time management. This study aims to develop a new unit construction method by integrating digital fabrication with the conventional wooden construction technique on a large architectural scale and compare its productivity throughout the construction process to the conventional method. This paper first illustrates the current situation of free-form shape production by surveying a reinforced-concrete roof-construction project using a conventional construction method in Japan. We then develop a new construction method in which curved surfaces are divided into portable units in order to reduce on-site labor and ensure a high degree of accuracy. Finally, we analyze its productivity by conducting some assembly experiments. The new method reduces on-site labor costs by 93% compared with the conventional method.
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