| Summary: | 碩士 === 雲林科技大學 === 營建工程系碩士班 === 96 === For the construction of Ma-Tsu Extradosed Bridge the control method, with the function of parametric prediction, was studied in detail in order to assist the contractor in controlling the construction accuracy of the bridge. The method was developed on the basis of grey theory, in which a series of studies were made to evaluate the influence of several important parameters used for the accuracy control of long-span bridges. Before applied to Ma-Tsu Extradosed Bridge, the developed algorithm was tested by taking the existing free cantilever construction unit of Kao-Ping-Hsi Bridge as a calculation example. The deflection data recorded in the construction phase of the FCC unit was applied for the camber calculation in simulating the construction process. Then, the method was evaluated and refined in accordance with the accuracy performance of the simulated calculation results. According to the construction method of Ma-Tsu Extradosed Bridge the algorithm was applied for the control of the construction accuracy of the girder constructed by using FCC method. In addition, the internal force of the cable system was also checked by using ambient vibration method. Finally, a further study was performed to analyze the accuracy performance of the completed bridge and then some suggestions were proposed for the future application of the accuracy control method in long-span bridges.
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