| Summary: | 博士 === 國立交通大學 === 土木工程學系 === 99 === A design company (e.g. architect firm) of construction projects usually has to deal with many design projects concurrently. However, the past studies seldom mentioned the management of multiple design projects. In terms of the current implementation, the design work is mainly arranged according to the past experiences, and there is a lack of the application of management tools. The design iteration of multiple projects is very complicated. In addition to the adjustment of work order of various projects according to their needs and the deployment of design personnel, the mutual communication, clarification and cooperation among design personnel are still required. In other words, there are many design iteration relationships existing in design work, which is completely different from the Start-to-Start, Finish-to-Start and Finish-to-Finish relationships existing in general construction work. Therefore, the management tools, such as Critical Path Method, which is commonly used in general construction schedule, cannot be directly applied to the management of design schedule. Moreover, the frequency of design iterations and the uncertainty of work duration increase the difficulty in defining the relationship in a design work and calculating the duration of design project. Under the situation where the design time and the overall design project cannot be accurately estimated, it is difficult to assess the cost of human resources to be spent during the design process. This study developed a computer simulation-based model for multi-project schedule, which allows the deployment of different design participants to various operations of multiple design projects. This study also constructed a design iteration generator to facilitate the control of the occurrence of various design iterations and their occurrence frequency, as well as to take into account the influence of various types of design iterations on the working duration of multiple design projects. Furthermore, this model used Design Structural Matrix to help define the relationships of design iterations. As a whole, the multi-project schedule developed in this model takes into account the uncertainty of design iterations and work durations.
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