Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

cable-stayed bridge Related Publications

2 Design Process of the Fixing Pipes in the Guide Pipe Anchor System for Cable-Stayed Bridges

Authors: Sun-Kyu Park, Sungnam Hong, Jinwoong Choi

Abstract:

For the efficient and safe use of the cable-stayed bridge, a design based on the detailed local analysis of the cable anchor system is required. Also, a theoretical design process for the anchor system should be prepared and reviewed. Generally, the size of the fixing pipe in the anchor system is decided according to the specifications prepared by cable-manufacturing companies, and accordingly, there is difficulty determining the initial inner diameters of the fixing pipes. As such, there is no choice but to use the products with the existing sizes. In this study, the existing design process of the fixing pipe, is a type of guide pipe anchor in the cable anchor system, is reviewed, a formula determining the thickness of the fixing pipe is proposed, and the convenience and validity of the suggested equation is compared with the results of the existing designs to verify its convenience and validity.

Keywords: cable-stayed bridge, Guide pipe anchor system, Fixing pipe, Theoretical design process

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1 Internal Force State Recognition of Jiujiang Bridge Based on Cable Force-displacement Relationship

Authors: Weifeng Wang, Xianwei Zeng, Guoqing Huang

Abstract:

The nearly 21-year-old Jiujiang Bridge, which is suffering from uneven line shape, constant great downwarping of the main beam and cracking of the box girder, needs reinforcement and cable adjustment. It has undergone cable adjustment for twice with incomplete data. Therefore, the initial internal force state of the Jiujiang Bridge is identified as the key for the cable adjustment project. Based on parameter identification by means of static force test data, this paper suggests determining the initial internal force state of the cable-stayed bridge according to the cable force-displacement relationship parameter identification method. That is, upon measuring the displacement and the change in cable forces for twice, one can identify the parameters concerned by means of optimization. This method is applied to the cable adjustment, replacement and reinforcement project for the Jiujiang Bridge as a guidance for the cable adjustment and reinforcement project of the bridge.

Keywords: parameter identification, cable-stayed bridge, cable force-displacement, internal force state

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