| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 93 === With the growth of population and the frequent use of land in Taiwan’s urban areas, the authorities concerned about keeping repairing and constructing underground wires to meet the needs for urban development. However, the whole society not only pays for this kind of repeated wire-constructions, but also feels annoyed about this tough affairs it. As a result, it has become one of the most concerns of the government for a long time in Taiwan.
As for other developed countries, they have taken advantage of the Common Duct to solve the problem many hundred years ago for a century. That is to say, Common Duct is the essential infrastructure which paves the way for Taiwan’s becoming a developed country for Taiwan. With the enactment of Common Duct Act in June 2000, the legalization of Common Duct and establishes the cornerstone for future constructions.
Besides improving traffic condition and sparing too many road constructions, Common Duct can integrate all kinds of wires on or under the ground and minimize the damages caused by disasters. Although Common Duct is so important, there’s still no evaluation model of Common Duct network plan suitable for suitable city in Taiwan . Nevertheless, whether the network plan is suitable or practical, many problems will also derive from this, such as the budgets inputted, the feasibility of multistage plan, the rationality of construction benefits, whether to meet the needs for future, etc.
Hence, this study with macroscopic perspective is made by collecting related references, analyzing past cases of common duct network in Taiwan. In addition, by means of interviewing experts and aiming at the process of Common Duct network plan evaluation to do in-depth research. This study also applies the concepts of MCDM, and integrates systematical methods such as DAHP, TOPSIS and SA to set construction priority for the common duct network in Taiwan’s urban areas.
The priority model set in this study divides networks into compulsory and optional network--- to evaluate rules and policies for compulsory network, to use systematical methods such as MCDM for optional network, and finally to simulate and analyze cases to figure out layer and weighted index: construction and maintenance costs (0.167), demands of ducts (0.223), frequency of duct-construction (0.339), standard of road services (0.271), and also to use TOPSIS for policy-makers to consult multistage plan of common duct construction. This construction priority is expected to help setting suitable common duct network, so as to meet the needs for urban living system, to make the best economical benefits, to create cites with precaution against natural calamities, and then to lift the high standards and enhances the competitive advantage in Taiwan.
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