Measurement and Analysis on A Deep Foundation Pit Project for A Subway Station in Tianjin
In order to study the deformation law of deep foundation excavation and the main points of deformation con-trol,this paper analyzes the monitoring data of the entire construction process of the deep foundation pit through deep fundation pit engineering of a subaway station in Tianjin urban area.The focus is on the variation law of the measured data of horizontal displacement,support axial force,surface settlement,and surrounding buildings of underground continuous wall during the deep foundation pit construction process with various con-struction processes and times.The reasons for the excessive horizontal displacement of the south underground continuous wall and the deformation of the building are analyzed in detail.The measured data shows that dur-ing the construction period of the underground continuous wall and precipitation test,there is significant set-tlement of the surface and buildings,except for the horizontal displacement of the south wall and excessive de-formation of the building,all other deformation data are less than the design allowable values,the construc-tion quality of the underground continuous wall has a significant impact on the horizontal displacement of the wall,building settlement is more sensitive than the surface settlement,during the excavation process of the foundation pit,in addition to monitoring,it is also necessary to strengthen inspections of wall quality,water leakage,and other situations.
deep foundation pitunderground continuous wallsettlementsubway station
国家科技期刊平台
NSTL
万方数据
