Risk Analysis of Existing Buildings During Excavation of Metro Station Using Shallow Tunneling Method

A construction safety management process was proposed based on the risk analysis theory,which is used to prevent building collapse and control the key risk factors during the metro station construction.The mechanism of the risk accidents and their prevention measures were studied based on the risk assessment of existing buildings,measures for risk control and ground consolidation.After the construction of Zhongjie Station,ground surface settlement and inclination of existing buildings were successfully controlled,which verified the reasonableness of the construction measures and the risk control standards set forth in the construction safety management process.The proposed methodology was shown to be effective in managing the risks of over-inclination and excess-settlement.