Pan, Q.; Yan, D.; Yi, Z. Form-Finding Analysis of the Rail Cable Shifting System of Long-Span Suspension Bridges. Appl. Sci.2018, 8, 2033.
Pan, Q.; Yan, D.; Yi, Z. Form-Finding Analysis of the Rail Cable Shifting System of Long-Span Suspension Bridges. Appl. Sci. 2018, 8, 2033.
Pan, Q.; Yan, D.; Yi, Z. Form-Finding Analysis of the Rail Cable Shifting System of Long-Span Suspension Bridges. Appl. Sci.2018, 8, 2033.
Pan, Q.; Yan, D.; Yi, Z. Form-Finding Analysis of the Rail Cable Shifting System of Long-Span Suspension Bridges. Appl. Sci. 2018, 8, 2033.
Abstract
The determination of the non-loading condition of the rail cable shifting (RCS) system, which consists of main cables, hangers and rail cables, is the premise of the girder erection for the long-span suspension bridges. An analytical form-finding analysis model of shifting system is established according to the basic assumptions of flexible cable structures. Herein, the rail cable is discretized into segmental linear cable elements and the main cable is discretized into segmental catenary elements. Moreover, the calculation and analysis equation of each member and their iterative solutions are derived by taking the elastic elongation of the sling into account. In addition, by taking the girder construction of Aizhai suspension bridge as engineering background, a global scale model of the RCS system is designed and manufactured; also the test system and working conditions are established. The comparison between the test results and analytical results shows the presented analytical method is correct and effective. The process is simplified in the analytical method, and the computational results and precision can satisfy the practical engineering requirements. In addition, the proposed method is suitable to apply to the computation analysis of similar structures.
Keywords
Suspension bridge; Girder construction; RCS process; Form-finding analysis; Model test
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
