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- Title
高速铁路高低塔混合梁斜拉桥设计研究.
- Authors
张欣欣; 徐 俊
- Abstract
In order to study the adaptability of asymmetric hybrid girder cable-stayed bridge on high-speed railway, Yinghe bridge of Fuyang - Huaibei High-speed Railway was taken as an example to carry out scheme design and structure design in combination with control factors. The design of the main bridge of the Yinghe bridge on Fuyang-Huaibei highspeed railway was limited by navigation, flood control and vertical alignment. The scheme of (31+73+230+ 114+40) m mixed beam cable-stayed bridge with unequal height towers was adopted. The main span and side span crossed the main and auxiliary channels respectively, the span was suitable for the channel width, and the beam height met the requirements of line elevation and clearance. The main bridge adopted half-floating system with longitudinal fixed supports on the side of the high tower and viscous dampers on the double towers. The steel-concrete composite beam was above the channel, and the beams of other small spans were concrete beams. H-shaped concrete towers and fan-shaped stay cables were used. The static and dynamic models were established, and the static, stability, earthquake resistance, wind resistance and windmill bridge coupling calculation and analysis were carried out for the bridge. The results show that, the stress of the main bridge is reasonable, indexes of static and dynamic analysis meet the requirements of the code, and the structure is safe and reliable. The stiffness of the main beam is large enough for the requirements of ballastless track.
- Subjects
HIGH speed trains; STEEL-concrete composites; CONCRETE beams; WHEATSTONE bridge; COMPOSITE construction; CABLE-stayed bridges; TOWERS
- Publication
Railway Investigation & Surveying, 2023, Vol 49, Issue 3, p109
- ISSN
1672-7479
- Publication type
Article
- DOI
10.19630/j.cnki.tdkc.202209210001