带长悬臂的钢筋混凝土防护刚架桥设计  

Design of reinforced concrete protective rigid frame bridge with long cantilever

作　　者：王杰 Wang Jie(Lanzhou Railway Design Institute Co.,Ltd.,Lanzhou Gansu 730030,China)

机构地区：[1]兰州铁道设计院有限公司,甘肃兰州730030

出　　处：《山西建筑》2025年第6期156-159,共4页Shanxi Architecture

摘　　要：依托兰合铁路项目,从该项目与既有双达高速公路交叉的典型工点出发,介绍了铁路下穿公路时,公路防护桥梁的设计要点,同时以新建带10 m悬臂的32 m钢筋混凝土防护刚架桥为例,建立了Midas Civil有限元模型,分析了小跨径长悬臂钢筋混凝土门式刚架桥的受力特点,基于反应谱法对结构进行了E1,E2地震状态下的抗震验算,为同类型防护桥梁的设计提供参考和借鉴。This paper,relying on the railway project,especially with the typical workpoint of the highway crossing,introduces the design points of the highway protection bridge,at the same time of 32 m reinforced concrete protective steel bridge with 10 m cantilever,analyzed the characteristics of reinforced concrete rigid steel bridge with long cantilever,based on the structure of E1 and E2 seismic check,to provide reference and reference for the design of the same type of protective bridge.

关 键 词：刚架桥 桥梁结构 长悬臂 抗震验算 

分 类 号：TU997[建筑科学—市政工程] U448.23[建筑科学—桥梁与隧道工程]