武汉地铁11号线涉铁深基坑支护设计及监测分析

以武汉地铁11号线左岭站-葛店南站区间为例,对临近武黄城际铁路的区间风井、葛店南站,以及出入口深基坑进行围护结构设计,并对临近基坑的城际铁路桥梁进行施工监测分析。监测分析表明,围护结构采用钻孔桩加多层支撑,并配合高压旋喷桩止水的方案是合理的,能够有效控制临近基坑的铁路桥梁的位移及沉降。采用智能化监测技术,在对铁路运营无影响的条件下,能够有效地对深基坑开挖进行检测,保证基坑开挖安全和城际铁路的正常运营。

Support Design and Monitoring Analysis of Deep Foundation Pit in Related to Railways in Wuhan Metro Line 11

Taking the interval from Zuoling station to Gedian South Station of Wuhan Metro Line 11 as an example,the enclosure structure of the deep foundation pit of interval air shaft,Gedian South Station and the entrance and exit of Gedian South Station near the WuHuang intercity railway is carried out.The construction monitoring analysis of the intercity railway bridge near the foundation pit is carried out.Monitoring analysis shows that it is reasonable to adopt the scheme of bored pile with multi-layer support as the enclosure structure and the scheme of high-pressure rotary jet grouting pile to stop water,which can effectively control the displacement and settlement of the railway bridge near the foundation pit.The application of intelligent monitoring technology can effectively detect the excavation of deep foundation pit without affecting the railway operation,so as to ensure the safety of foundation pit excavation and the normal operation of intercity railway.