玉兰大道桥梁下穿运营铁路近距离施工影响分析  

Impact Analysis of the Yulan Avenue Bridge Underpass Construction in Close Proximity to an Operational Railway

作　　者：俞定 YU Ding(China Railway Fourth Bureau Group Corporation,Hefei 230023,China)

机构地区：[1]中铁四局集团有限公司,合肥230023

出　　处：《路基工程》2024年第6期168-172,共5页Subgrade Engineering

摘　　要：引江济淮工程玉兰大道桥梁从既有合安高铁肥西联络线方兴大道特大桥^(#)43~^(#)44墩之间穿过,采用MIDAS GTS NX有限元软件建立模型,对道路桥梁近距离下穿高铁施工阶段以及运营阶段的铁路桥梁结构进行影响分析。结果表明:铁路墩台位移均在1 mm以内,满足行业相关要求;施工现场监测结果略低于理论计算值,表明下穿方案合理可行。The Yulan Avenue bridge of the project of river diversion to Huaihuai passes through the existing He'an high-speed railway Feixi liaison line between piers^(#)43 and^(#)44 of Fangxing Avenue Special Bridge.MIDAS GTS NX finite element software is used to establish a model to analyze the impact of the road bridge close to crossing the high-speed railway during the construction stage as well as the operation stage of the railroad and bridge structure.The results show that:the displacement of railroad piers is within 1 mm,which meets the relevant requirements of the industry;the monitoring results of the construction site are slightly lower than the theoretical calculation value,indicating that the underpassing program is reasonable and feasible.

关 键 词：桥梁下穿 运营铁路 影响分析 现场监测 稳定性 安全性 

分 类 号：U441.7[建筑科学—桥梁与隧道工程]