Analysis on the Supporting Structure of Semi-circular Deep Foundation Pit Adjacent to Track
Relying on a semi-circular deep foundation pit project in Suzhou,the project needs to go through the tunnel in the late stage,in the selection process of support,the tunnel area adopts the recoverable CSM method piles and increases the spacing of the support arrangement in the underpass area,and the rest of the area adopts the grouted piles and tri-axial water curtain,numerical simulation analysis of the whole process of excavation of the foundation pit and on-site monitoring.The results show that the"umbrella-type"support can make full use of the arch effect of the semi-circular pit,and the pit support system is characterized by small deformation in the arc area and large deformation in the straight side,and the deformation in the straight side area is about 12.5％larger than that in the arch area,so it can better control the impact on the pit itself and the surrounding environment.
silty soilsemi-circular deep foundation pitadjacent to trackarch effect"umbrella-type"supportdeformation monitoringrisk early warningstability
万方数据
维普
