地铁隧道开挖对地表高压铁塔影响的数值分析  

Numerical Analysis of Influence of Subway Tunnel Excavation on Surface High Voltage Tower

作　　者：杨雄 Yang Xiong(China Railway 20th Bureau Group No.3 Engineering Co.,Ltd.,Chongqing 400065,China)

机构地区：[1]中铁二十局集团第三工程有限公司,重庆400065

出　　处：《科学技术创新》2022年第3期95-98,共4页Scientific and Technological Innovation

摘　　要：隧道修建过程中常常会近接各种构筑物,高压输电铁塔就是其中之一,由于其对变形控制要求较高,因此研究隧道开挖的对其产生的影响是有必要的。本文以重庆轨道交通十号线工程为背景,本文通过有限元软件ABAQUS,建立了隧道开挖模型,研究了隧道不同开挖位置对地表高压铁塔位移的影响,分析了铁塔的沉降位移及倾斜率,结果表明:当隧道位于高压铁塔正中间时,铁塔的沉降量最大为11.98mm及倾斜率最大为0.0015,倾斜率已经超出规范要求,因此,地铁隧道在该区域下穿高压铁塔时,施工风险较高,应重点关注。In the process of tunnel construction,it is often close to various structures.High voltage transmission tower is one of them.Because it has high requirements for deformation control,it is necessary to study the impact of tunnel excavation on it.Taking Chongqing Rail Transit Line 10 project as the background,this paper establishes the tunnel excavation model through the finite element software ABAQUS,studies the influence of different excavation positions of the tunnel on the displacement of the surface high-voltage tower,and analyzes the settlement displacement and inclination rate of the tower.The results show that when the tunnel is located in the middle of the high-voltage tower,The maximum settlement of the tower is 11.98mm and the maximum inclination rate is 0.0015.The inclination rate has exceeded the specification requirements.Therefore,when the subway tunnel passes through the high-voltage tower in this area,the construction risk is high,which should be paid special attention to.

关 键 词：高压铁塔 沉降位移 倾斜率 

分 类 号：TU433[建筑科学—岩土工程]