环道下穿既有建筑物安全性评估

摘要

以某城市环道近接穿越既有建筑物工程为例,运用FLAC3D数值计算模型,模拟了环道穿越建筑物的全过程,对既有建筑物的沉降、倾斜进行评估分析,分析表明：穿越过程中环道拱顶最大沉降值为4.37 mm,建筑物基底最大沉降量和倾斜率均满足规范控制标准。%In one city＇s engineering that urban tunnel nearly crossing under existing buildings,we use a FLAC3D numerical calculation model to simulate the whole process and predictively analyze the characteristics of existing building＇s settlement and inclination.Analysis shows that the maximum settlement of urban tunnel vaults is 4.37 mm,and the maximum value of buildings＇ basement settlement and inclination are in the range of control standards.