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Study on Construction and Control Technology of Stay Cables

Author: SunChangJun
Tutor: LiYaDong；XieBangZhu
School: Southwest Jiaotong University
Course: Architecture and Civil Engineering
Keywords: Cable-stayed Parallel wire Strand cable Construction technology Construction Control Cable Force Measurement
CLC: U448.27
Type: Master's thesis
Year: 2010
Downloads: 38
Quote: 0
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Abstract


Cable-stayed bridge as a combination of Sarasota, main beam, cable-stayed three force components force structure, its cable-stayed to play to achieve load transfer between the girders and towers and links into the structure of the overall structure important role. The main characteristics of the cable-stayed bridge is: the structural system is determined, the dead load of the structure of the internal forces and linear completely determined by cable force. Therefore, the cable-stayed construction of high quality is essential for the cable-stayed bridge. Cable-stayed bridge belongs high hyperstatic given structure and its construction is generally a phased construction methods, the process is a typical time-varying process, Bridge reached so that the actual purpose of approaching the status of the design goals, construction Control. Cable - tension construction is the most important core content of the cable-stayed bridge construction and construction control. Cable - tension structure construction process, it is necessary to the development of advanced and reliable construction techniques and methods to ensure the high quality of the construction process, through scientific control process for cable-stayed tension, high-efficiency propulsion, ensure that the cable-stayed bridge into the actual bridge state approaching the design goals of the state. Widely used parallel wire cable and parallel strand cable and cable force measurement and control methods for cable-stayed construction technology research and discussion. Thesis, as follows: (1) the study of the cable-stayed History, development status and control of cable force an important role in the construction of cable-stayed. (2) analysis of the domestic cable-stayed structure forms as well as the appropriate construction methods, and the two cable-stayed structure, explore different engineering applicable to the actual construction process. (3) by the method of cable force is applied to the two cable-stayed structure analysis to explore the best construction techniques the cable force control under different conditions. (4) of cable force detection method, were studied: pressure gauge Determination of compressive stress sensor, vibration frequency and magnetic flux law basic principles. Narrative; sensor cable force detection and comparative analysis of the scope and the advantages and disadvantages of various cable force measurement method; monitoring test as a new the cable force test method, the magnetic flux sensor in the existing cable has achieved good results, and the cable force long-term monitoring. (5) through the analysis of practical engineering applications, explore the problems encountered in the actual project and propose appropriate solutions.

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Cable-stayed bridge
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