公路路基结构下穿高速铁路桥梁可行性研究  

Feasibility Study on Road Subgrade Structure Crossingbeneath a High-speed Railway Bridge

作　　者：刁云峰 刘玉玲 崔素花 DIAO Yunfeng;LIU Yuling;CUI Suhua(China Railway Beijing Bureau Group Co.,Ltd.,Beijing 100070,China;China-Road Transportation Verification&Inspection Hi-Tech Co.,Ltd.,Beijing 100088,China;Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221000,China)

机构地区：[1]中国铁路北京局集团有限公司,北京100070 [2]中路高科交通检测检验认证有限公司,北京100088 [3]江苏建筑职业技术学院,江苏徐州221000

出　　处：《高速铁路技术》2024年第5期100-105,共6页High Speed Railway Technology

基　　金：中国铁路北京局集团有限公司科技研究开发计划引导课题(2022CG02)。

摘　　要：为研究某公路路基结构下穿高速铁路桥梁设计和施工方案可行性,以该公路下穿高速铁路为工程应用实例,通过有限元分析软件MIDAS-GTS模拟施工过程,并结合现场实时监测对设计及施工方案进行评估。研究结果表明:不同施工阶段高速铁路桥墩墩顶的各方向附加变形均符合标准要求,公路路基结构下穿高速铁路桥梁设计及施工方案可行,沉降监测曲线与理论分析曲线较为吻合,通过仿真模拟来评估设计方案是可行的。To assess the feasibility of the design and construction scheme for a road subgrade structure crossing beneath a high-speed railway bridge,this study took a real case where a highway intersects the railway line.The construction process was simulated using the finite element analysis software MIDAS-GTS,complemented by real-time monitoring data to evaluate the design and construction scheme.The results indicate that the additional displacements in all directions at the top of the high-speed railway bridge piers throughout the various construction stages comply with standard requirements.The proposed design and construction scheme for the road subgrade crossing beneath the high-speed railway bridge is deemed feasible,with the observed settlement monitoring curves closely aligning with theoretical analysis.Using simulation modeling to appraise design solutions in this context is thus deemed viable.

关 键 词：高速铁路桥梁 路基 理论分析 仿真模拟 沉降 监测 

分 类 号：U442[建筑科学—桥梁与隧道工程]