跨度188m铁路悬浇上承式钢筋混凝土拱桥设计与分析  

Design and Analysis of 188m Railway Cantilever Casted Reinforced Concrete Arch Bridge

作　　者：涂杨志[1,2] TU Yangzhi(China Railway SIYUAN Survey and Design Group Co.,Ltd.,Wuhan 430063,China;China Railway Construction Bridge Design and Research Institute,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063 [2]中铁建大桥设计研究院,武汉430063

出　　处：《铁道标准设计》2020年第12期66-70,共5页Railway Standard Design

摘　　要：瓮马铁路板布河大桥主桥采用跨度188 m铁路悬浇上承式钢筋混凝土拱桥,拱上结构采用8孔24 m简支T梁。为研究该桥桥式方案的受力特性,首先阐述主桥的方案构思、施工方法以及总体设计,然后通过空间有限元软件对本桥进行静、动力仿真分析,以及整体稳定性与列车走行性进行分析。结果表明,对于时速120 km客货共线铁路拱桥,为方便施工拱上结构可采用简支T梁;悬浇拱桥通过调整施工阶段临时扣索及背索索力可达到合理的成桥状态,结构的强度、稳定性及列车走行性均能满足要求。The main bridge of Banbuhe Bridge on Wengma Railway adopts 188 m span railway cantilever casted reinforced concrete arch bridge,and the superstructure of the arch adopts 8-hole 24 m simply supported T-beam.In order to research the force characteristics of the main bridge scheme of the Banbuhe Bridge,conceptual design,construction method and overall design of the main bridge are described firstly,and then the static and dynamic simulation analysis of the bridge,the overall stability and the train running is carried out by using the space finite element software.The results show that,for the railway arch bridge for 120 km/h passenger and freight trains,simply supported T-beam can be used for the superstructure of the arch bridge for the convenience of construction;for the cantilever casted arch bridge,reasonable completion state of bridge can be achieved by adjusting the force of temporary stay cable and back stay cable in the construction stage;the strength,stability of structure and running performance of the train meet the requirements.

关 键 词：悬臂浇筑 上承式拱桥 钢筋混凝土 拱上结构 列车走行性 客货共线铁路 

分 类 号：U448.13[建筑科学—桥梁与隧道工程] U448.222[交通运输工程—道路与铁道工程]