摘要
为研究地铁车站施工对邻近地下综合管廊结构安全的影响,以广花一级公路地下综合管廊邻近江府站地铁车站一段作为研究对象,通过建立Midas GTS的三维有限元模型,结合现场监测进行分析。研究结果表明:在地铁车站施工过程中,综合管廊下沉且往指向基坑方向移动,最大竖向位移为-0.611 mm,最大水平位移为2.778 mm,最大应力为-6.557 MPa,最大应变为-5.050×10-5,综合管廊主体结构处于安全状态。基坑外降水将导致综合管廊位移增大,建议综合管廊的水位报警值取为水位下降1 m。
Taking a section of the underground utility tunnels near Jiangfu Station of Guanghua First Road as the research subject,by establishing a three-dimensional finite element model in Midas GTS and combining with field monitoring,the impact of subway station construction on the structural safety of adjacent underground utility tunnels is analyzed.The results show that:During the construction of the subway station,the utility tunnels have settled and moved towards the direction of the excavation pit,with a maximum vertical displacement of-0.611mm,a maximum horizontal displacement of 2.778mm,a maximum stress of-6.557MPa,and a maximum strain of-5.782×10-5.The main structure of the utility tunnels is in a safe condition.Dewatering outside the excavation pit will lead to increased displacement of the utility tunnels.It is recommended that the water level alarm value for the utility tunnels be set at a drop of 1 meter.
作者
张铨婧
杨庆水
Zhang Quanjing;Yang Qingshui(Guangdong Jianke Architectural Design Institute Co.,Ltd.,Guangzhou,Guangdong 510000)
出处
《现代工程科技》
2024年第20期41-44,共4页
Modern Engineering Technology
关键词
地下综合管廊
数值分析
地铁车站
现场监测
结构安全
underground utility tunnel
numerical analysis
subway station
in-situ monitoring
structural safety
