铁道标准设计2025，Vol.69Issue(4)：79-84,101,7.DOI:10.13238/j.issn.1004-2954.202409060003
粤东城际铁路(80+152+80)m矮塔斜拉桥设计研究
Study on Design of a(80+152+80)m Extradosed Cable-Stayed Bridge for Eastern Guangdong Intercity Railway
摘要
Abstract
The Xinjin River Super Major Bridge on the Eastern Guangdong Intercity Railway is a(80+152+80)m double-tower,double-cable-plane,prestressed concrete beam extradosed cable-stayed bridge.It is one of the extradosed cable-stayed bridges with the highest seismic intensity in China.Part of the bridge is located on a curve with a radius of 800m,and the underwater bridge piers must be inclined along the direction of water flow to meet flood assessment requirements.To address the seismic issues of concrete curved extradosed cable-stayed bridges in high seismic intensity zones,a combined seismic reduction and isolation scheme of friction pendulum bearings and dampers was proposed in the design.A finite element program was used to establish the seismic analysis model of the entire bridge,and the structural response under the action of frequent and rare seismic forces was analyzed in detail.The results showed that the combination of friction pendulum bearings and dampers had a significant isolation effect and met the deformation control requirements for the superstructure under rare earthquakes.According to the spatial coupling vibration analysis of the vehicle-bridge and wind-vehicle-bridge systems,the safety and ride comfort of trains passing through the bridge met the requirements,and the operating conditions under strong winds were comparable to those of the roadbed.关键词
铁路桥/矮塔斜拉桥/高烈度震区/摩擦摆支座/阻尼器/城际铁路Key words
railway bridge/extradosed cable-stayed bridge/high seismic intensity zone/friction pendulum bearing/damper/intercity railway分类
交通工程引用本文复制引用
姚君芳,杨林坤,张付宾,胡国华..粤东城际铁路(80+152+80)m矮塔斜拉桥设计研究[J].铁道标准设计,2025,69(4):79-84,101,7.基金项目
中国中铁股份有限公司科技研究开发计划课题(2021-专项-01) （2021-专项-01）
中铁工程设计咨询集团有限公司科研开发计划项目(研2023-16,研2022-20,研2022-4) （研2023-16,研2022-20,研2022-4）
