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A Study on Knowledge Systematization in Construction- Our participation in the Intelligent Manufacturing System(IMS) program and our proposition of the Virtual Construction concept -

by Hiroyuki Nakamura, Naoto Mine, Yasuhiro Shyamoto, Satoshi Akagawa and Sumio Horiuchi

The Shimizu Corporation is one of the partners in the Gnosis consortium, this being one of the six test case consortiums of the IMS. The long-term goal of Gnosis is to develop an approach directed towards a post mass-production paradigm. The objectives of the test case are: (1) to evaluate the emerging systematization techniques available for real design and manufacturing knowledge, (2) to establish conceptual specifications for configuration management and configurable production systems, and (3) to specify and to demonstrate a pilot virtual environment for (2) above. This paper describes our contribution to the program which has been established through our research activities during the test case stage. We propose the new concept of "Virtual Construction" which is fundamental to our participation in the Gnosis full scale program. "Virtual", in the case of Virtual Construction signifies a knowledge system of concepts and embedded models which interact dynamically with real construction processes, and adapts reciprocally with each other. The conceptual world of virtual system reflects changing events in the actual construction process, becomes altered by them, and exerts influence upon them through its control grip. It is media/ information space that should be utilized to manage the interactive mode of the Virtual/ Real construction process. This dynamic interaction leads to the realization of flexible construction, free from an entrenched morphology of processes, and adaptive to model changes. Once a building is constructed, it irrevocably affects its immediate surroundings and human life over a long time span. Conversely, the value of a building is highly susceptible to any change of social, economic, and physical environments. Human society and its environment is rapidly changing. Environmental load has reached and exceeded the threshold of the reclamation capacity of nature due to continually expanding production volume. The result of this is that the sustainable development of society is now at stake. We established two primary research subjects in order to realize an evolving building system which adjusts to environmental change as follows: (1) The transformable capacity of an environment-friendly building system.(2) Development of a mutually adjustable dynamic system of Knowledge and Process Systemization consisting of knowledge, supporting tools, and its feedback system. To realise these objectives it is necessary to reorganize the whole construction system including business development, design, logistics, actual construction, and maintenance. We will verify the applicability of these concepts for the construction process.