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通过对盾构施工所引起的地表沉降进行了经验公式的计算,并利用有限元软件MIDAS(GTS)进行了施工阶段的数值模拟,将计算值、模拟值与现场实测值进行了比较,并对于经验公式与数值模拟的结果合理性进行了验证.提出盾构隧道施工的横向影响范围,对于周围建筑环境保护和施工安全有指导意义.
The empirical formula of surface settlement caused by shield construction was calculated. The numerical simulation of construction stage was carried out by using finite element software MIDAS (GTS). The calculated value and the simulated value were compared with the measured values in the field. Empirical formula and numerical simulation results are validated.The paper puts forward that the transverse influence scope of shield tunnel construction has guiding significance for the environmental protection and construction safety of surrounding buildings.