The Overall Design and Application of M280 Cable System of the Mingyuexia Yangtze River Bridge of Chongqing Donghuan Railway
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Bibliographic Details
| Author(s): |
Kejian Chen
(China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610036, China)
Yuzhu Hu (China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610036, China) Xu Wang (China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610036, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 2083-2084 | ||||
| Total no. of pages: | 2 | ||||
| DOI: | 10.2749/nanjing.2022.2083 | ||||
| Abstract: |
Mingyuexia Yangtze River Bridge is a (62.5+125+425+175+75) m double-deck four-line railway steel truss girder cable-stayed bridge with high and low towers. In view of characteristics of the bridge heavy design load and prominent fatigue problems, the pressure area adopts steel-concrete combination with closed box chamber structure between the lower beam. Steel truss beam adopts regional and different internal force types of fatigue loading coefficient to improve the economy. The cable adopts the 280MPa high fatigue stress amplitude cable system to extend cable change cycle. Fatigue and safety durability of the cables are comprehensively improved by a variety of means, including improvement of the stress of cable base metal, reduction of bending stress of the transition section, improvement of clip structure, more than 70% of life span is increased compared with the M250 cable. |
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| Keywords: |
cable-stayed bridge Steel truss girder double-deck four-line railway fatigue loading coefficient M280 cable
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