地铁盾构隧道下穿密集建筑物沉降分析及对策

Settlement analysis and countermeasures of underway dense buildings of metro shield tunnel

通过采用Plaxis有限方法及Peck公式对盾构施工对建筑物沉降影响进行数值模拟分析,并与实测沉降值进行比较,得出Plaxis有限元模拟结果能较准确反映实际沉降值,并给出了盾构施工期间辅助措施,以期有效控制建筑物沉降并满足相关要求。

This paper made numerical simulation analysis on the influence of shield construction to building settlement using Plaxis finite element method and Peck formula,and compared with measured settlement values,gained the Plaxis finite element simulation results could accurately reflect actual settlement value,and gave auxiliary measures in shield construction period,in order to effectively control buildings settlement and meet relevant requirements.