SMW工法桩在苏州地铁二号线出入段线中的应用

Application of the Subway Entrance and Exit Section Line with SMW Engineering Methods Piles in Suzhou No.2 Metro Line

苏州轨道交通二号线出入段线区间隧道采用明挖法施工,经综合考虑并为配合车站施工,采用与车站一致的工法(放坡+SMW工法桩)对区间范围内较深里程段施作围护结构,施工过程中及时了解地面沉降差异,根据现场实时基坑监测结果及时对钢管支撑轴力作出调整,以确保地面沉降在控制范围内。

Open cut method is used in the regional tunnel construction of entrance and exit section of Suzhou No.2 metro line.As the regional tunnel next to Suzhou high-speed station,comprehensive consideration of the station construction,retaining structure has been used in this project the same as Suzhou high-speed station(Step-Slope+SMW engineering methods piles),for foundation pit at deeper levels of the support.Keeping up-to-date about the ground settlement discrepancies immediately when the retaining structure is constructed,adjust axial force of steel pipe according to the real-time monitoring results of foundation pit.In this way to ensure that the ground settlement is under control.