跨座式单轨交通(100+160+100)m钢箱梁刚构矮塔斜拉桥设计研究  

Research and Design of(100+160+100)m Low Tower Cable-Stayed Bridge with Steel Box Girder Rigid Frame of Straddle Type Monorail Transit

作　　者：彭华春[1] 李靖[1] PENG Huachun;LI Jing(China Railway Siyuan Survey and Design Group Co.,Ltd.,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

出　　处：《铁道标准设计》2022年第1期74-78,共5页Railway Standard Design

摘　　要：柳州单轨1号线三门江跨江桥主桥跨越柳江,综合线形、技术、经济等多方面因素,采用(100+160+100)m钢箱梁刚构矮塔斜拉桥方案。为降低结构整体高度,在钢箱梁上焊接钢轨道梁,形成组合受力结构。研究该桥的受力性能和抗震性能,对桥梁整体结构进行静力分析和抗震分析。计算结果表明:该桥强度、刚度及抗震性能均满足规范要求,具有良好的静力和动力特性;让轨道梁参与桥梁结构整体受力是可行的,可以优化桥梁整体高度。The main bridge of Sanmen River Bridge of Liuzhou Monorail Transit Line 1 crosses Liujiang River.Considering the comprehensive alignment,technology and economy,the scheme of(100+160+100)m steel box girder rigid frame cable-stayed bridge with low pylon is adopted.In order to reduce the overall height of the structure,the steel track beam is welded on the steel box girder to form a combined stress structure.In order to study the mechanical and seismic performances of the bridge,static analysis and seismic analysis of theoverall structure of the bridge are carried out.The calculation results show that the strength,stiffness and seismic performance of the bridge meet the requirements of the code with good static and dynamic properties;it is feasible to integrate the track beam in the overall stress of the bridge structure,which can optimize the overall height of the bridge.

关 键 词：跨座式单轨 桥型方案 钢箱梁刚构矮塔斜拉桥 组合受力结构 数值计算 设计 

分 类 号：U232[交通运输工程—道路与铁道工程] U448.2[建筑科学—桥梁与隧道工程]