穿越既有铁路专用线施工对桥墩影响的安全评估分析  

Safety assessment analysis of the impact of crossing existing railway dedicated lines on bridge piers during construction

作　　者：张硕 ZHANG Shuo(Strait(Fujian)Transportation engineering Design Co.,Ltd.,Fuzhou 350000)

机构地区：[1]海峡(福建)交通工程设计有限公司,福州350000

出　　处：《铁道勘测与设计》2024年第3期51-53,73,共4页Railway Survey and Design

摘　　要：文章以某穿越铁路工程的铁路专用线施工工程为研究背景,对专用线穿越铁路桥梁段施工全过程进行安全评估,利用Midas GTS-NX软件将全部工程元素建模,分析各关键环节铁路桥梁和路基沉降及变形情况。研究表明,基坑施工会对既有铁路桥梁墩顶和路基沉降及变形产生影响,部分节点存在安全隐患,研究成果可为同类型工程设计及施工提供参考。Based on the research background of the construction project of a special railway line crossing a railway project,the safety assessment of the whole construction process of the special line crossing railway bridge section is carried out,and all the engineering elements are modeled by using Midas GTS-NX software,and the settlement and deformation of railway bridges and roadbeds in each key link are analyzed.The research shows that the foundation pit construction will have an impact on the settlement and deformation of the pier crest and subgrade of the existing railway bridge,and there are potential safety hazards in some nodes,and the research results can provide a reference for the design and construction of the same type of engineering.

关 键 词：铁路桥梁 数值模拟 沉降变形 水平变形 

分 类 号：U44[建筑科学—桥梁与隧道工程]