摘要
为了有效降低周边工程施工对地铁隧道的影响,可在施工前采用三维建模的计算方法进行安全评估,再结合施工过程中的监测数据,实时分析地铁隧道结构及轨道道床等变形情况,以便科学地指导工程施工。某临近运营地铁基坑施工项目的安全评估和监测数据分析表明:基坑施工对左线隧道(临近基坑)的影响呈隆起趋势,最大隆起量为5. 08 mm;对右线隧道(远离基坑)的影响呈沉降趋势,最大沉降量为-2. 45 mm;监测数据的最大波动范围在-2^+2 mm之间。
In order to effectively reduce the impact of surrounding construction on the metro tunnel, a three-dimensional modeling calculation method can be used for safety assessment before construction. Combining the monitoring data during the construction process, the deformations of the tunnel structure and the track bed are analyzed in real time, so as to achieve the purpose of scientifically guiding the construction. Safety assessment and monitoring data analysis which are obtained through a foundation pit construction project near an operating metro indicate that: the impact of foundation pit construction on adjacent tunnels shows an uplifting trend, and the maximum uplift is 5.08 mm. While the impact on distant tunnels shows a subsidence trend, and the maximum settlement is -2.55 mm. The maximum fluctuation range of the monitoring data is between -2 mm and 2 mm.
作者
苏涛
Su Tao(Shenyang Metro Group Co. , Ltd. , Liaoning Shenyang, 110011, China)
出处
《铁道勘察》
2019年第5期8-13,共6页
Railway Investigation and Surveying
关键词
隧道监测
安全评估
变形规律
Tunnel monitoring
Safety assessment
Deformation law
作者简介
苏涛(1982-),男,2011年毕业于武汉大学测绘工程专业,工程师.
