市政配套工程施工对既有地铁车站的影响分析  

Analysis of the impact of municipal supporting engineering construction on existing metro stations

作　　者：王观璐 徐德鹏 张辉 WANG Guanlu;XU Depeng;ZHANG Hui(CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China;Qingdao Metro Group Co.,Ltd.,Qingdao Shandong 266035,China)

机构地区：[1]中交公路规划设计院有限公司,北京100088 [2]青岛地铁集团有限公司,山东青岛266035

出　　处：《现代城市轨道交通》2024年第4期97-105,共9页Modern Urban Transit

摘　　要：地铁保护区内外部作业管控要求高,地铁车站上方覆土浅、水头高,卸载对既有结构影响更为明显。文章以某城市上跨地铁的市政配套工程为例,辨识外部作业施工的风险源,通过有限元分析和理论计算,研究施工对既有地铁结构的变形、受力和抗浮稳定安全系数的影响。由计算结果可知,开挖卸载对结构竖向变形影响明显,施工对地铁结构受力和抗浮稳定影响满足规范要求。通过数值模拟数据与监测数据对比,发现模拟结果与实际情况相吻合,证明数值计算结果可信。在此基础上,文章提出有效的施工控制措施,以期为类似工程提供参考和借鉴。Operations within and outside subway protection zones require stringent control measures.With shallow soil cover and high groundwater levels above metro stations,unloading has a more pronounced impact on existing structures.Taking the municipal supporting project across the metro in a city as an example,this article identifies the risk sources of external operation construction projects,and studies the influence of construction on the deformation,stress,and anti-floating stability safety factors of the existing metro structure through finite element analyses and theoretical calculations.It can be seen from the calculation results that the excavation unloading has an obvious influence on the vertical deformation of the structure,and the influence of construction on the stress and anti-floating stability of the metro structure can meet the requirements of the standard.By comparing numerical simulation data with monitoring data,it was found that the simulation results matched the actual situation,proving the reliability of the numerical calculations.Based on this,this article proposes effective construction control measures,aiming to provide reference and guidance for similar projects.

关 键 词：地铁车站 管廊 路基换填 有限元分析 监测 

分 类 号：U213[交通运输工程—道路与铁道工程]