Spatial Object-Oriented Data Model for the Whole Life-Cycle Engineering project - A case of “Sewer Data model”
Date Issued
2005
Date
2005
Author(s)
Li, Hsin-Chih
DOI
zh-TW
Abstract
Geographical information system (GIS) has been widely applied in many subjects. For the civil engineering in Taiwan, the establishment of data value is usually applied in planning and design; however, while looking for the continuous application of construction data and focus on the maintenance and management of facilities, it is discovered that the data established in early period did not have complete planning. Consequently, the govern institution could not promote information management positively due to the cost of re-investigation and missing data. Therefore, constructing a geographical information data model that could support the whole life cycle of construction and cooperate with the management, review and execution of construction plan in Taiwan could facilitate present govern institution of construction to conclude in administrative system, carry out the collection and management of construction data gradually, and solve the data difficulty existed for a long period of time.
Status quo management is still the major construction application for GIS. It could not include planning design data into management scope, and extend planning data for reference in the follow up application stage. Furthermore, the layer framework of traditional geographical data model does not have time sequence storage and application ability; therefore, a possible solution is to introduce the concept of whole life cycle of construction, and cooperate with custom operation manner and plan management orientation of construction industry to construct an associated data model that contains spatial-temporal relationship and construction facility object orientation.
This research applies the database framework of spatial-temporal geography, extracts its record of data’s time sequence and management process, and use the idea of object-oriented to establish the level framework and association of construction object in each life cycle. Finally is to solve special problems among objects, such as communication, inheritance and scale, and then control the change of time sequence in each stage by new object, and expect the development of application system could more conform to the need of construction industry in the future.
Because the category data item of each construction is different, the data communication in life cycle and execution association between plans are different. Therefore, sewer construction is taken as the example to explain the data display and operation procedure of each life stage, and draw up sewer data object model; furthermore, “planning” object is used as the control factor of time to link the data transform of different time sequence in life cycle, and as the result of this research.
Subjects
物件導向
工程全生命週期
時空關係
GIS
Object-Oriented
Spatial-Temporal Relationship
Type
thesis
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