Author(s): ZHANG Hai, WU Da-hong
Pages: 55-58
Year: 2013 Issue:  11
Journal: Railway Standard Design
Keyword:  railway bridge; extradosed cable-stayed bridge; static analysis; detail analysis;
Abstract: Taking the extradosed cable-stayed bridge on Tianjin-Baoding Railway as the example, this paper analyzed emphatically the key technologies, including the arrangement of longitudinal prestressed steel tendons, the arrangement of bearings, the scheme of anchorage on the pylon, the anchorage zone of the cable beam, the local effect at pier bottom. The research draws the conclusion as below: this extradosed cable-stayed bridge can meet the requirement of railway operation safety; the two-bearing system can effectively play the role of bearing, and can be suitable for this bridge;the technology of cable saddle with steel tubes is more suitable for cable-stayed bridge. Finally, based on local analysis, the local strengthening measures for the cable beam anchorage zone and for the hollow zone at pier bottom were put forward.