碩士 / 國立中興大學 / 土木工程學系所 / 100 / Construction engineering construction steps can be divided into: earth excavation, the structures of application, followed by backfilling earthwork, ...... and so on work. Earthworks are often the first of the progress of the works, and because of depletion of a large number of machinery, fuel costs, has been gradually by the research attention. However, earthworks, Practice and more rely on experienced engineers, under the previous rule of thumb, reasoning deployed earthworks. Because there is no auxiliary mathematical error-prone and were not considered factors in the time, resulting in the transport of earth and stone repeat, increase costs.
Review of research literature in recent years, experts and scholars for the the earthworks best, because the complexity of the mathematical modeling, the achievements so far, most of them can only advance the timeline cut. For example: a one day or one week for the unit. Unit time, presupposes a fixed amount of excavation, fill amount usually be Gaigu to an average of Earthwork. Then, each work area belongs to: excavation area, fill area, staging area, or external soil-owned field ... and other conditions at the unit of time, optimized design.
However, the above method, because the self-locking the earthwork optimization unit time, to give up the flexibility of the earthworks scheduling of, and are often unable to carry out earthworks across time unit of the joint use, the output efficiency of earth transportation planning. Example: Suppose A work area in one day for excavation work area B in the first two days to fill, C work area buffer. Locked in unit time: temporary earthwork transportation of the first day of the first Area A to Area C, the next day and then moving transported from Area C to Area B. So, two transportation will consume a lot of transportation costs, while increasing the buffer excavators operating costs.
To break through these difficulties, the development of this paper: joint scheduling plan across time unit earth mode. CPM network diagram schedule of the construction process in mind, the amount of cut and fill side of each plant, the elasticity distribution in the timeline of a few days or weeks, depending on the time permitted by the Construction Site Map. Volume in unit time, by the joint planning of the entire system, without prior assumptions. Using linear programming (Linear Programming), cross-time, cross-plant as a whole earthwork cut and fill considerations, and resource constraints, to achieve the purpose of the earthwork transportation.
Finally, the new tires (MAXXIS) 100 million plant in Yunlin Douliou Industrial Zone, the construction of case, for example, the real import of this study technology the outcome by analysis and comparison of the planning results of this study with the traditional deployed to the actual occurrence of costs to be analyzed, the actual implementation of cost from the original 3,220,200, substantially reduced $ 11,970,402. The total cost savings of approximately $ 1,249,798 (9.45%).
| Identifer | oai:union.ndltd.org:TW/100NCHU5015068 |
| Date | January 2012 |
| Creators | Chien-Tung Hsu, 許建東 |
| Contributors | 謝孟勳 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 83 |
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