地铁暗挖车站施工对密集建筑群的影响和风险分析

为确保地铁车站施工期间周边建筑物的安全性和正常使用要求，提出基于风险分析的施工安全管理流程，从既有建筑物安全风险评估、风险控制措施及地层加固措施等几方面探讨了地面沉降、既有建筑物等关键施工节点出现风险事故的机制及其防范措施.工程实践表明，中街站主体结构施工结束后地表沉降及邻近地面建筑物的沉降值均在合理范围以内，验证了施工安全管理流程中规定的风险控制标准以及施工措施的合理性，有效降低了施工期间邻近建筑物面临的倾斜、沉降过大等风险.

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.