【摘要】 目前对盾构隧道施工引起的地表下土体变位进行预测分析的研究还相对较少,尤其是缺乏简单实用的工程估算方法。在深埋隧道周围土体弹性位移计算方法及盾构间隙参数研究成果的基础上,通过相应的分析和假设提出了一种预测盾构隧道施工引起地表下土体水平变位的简便估算方法。另外,在已有研究成果基础上,提出了一种新的盾构隧道沉降槽的描述方法,并结合Mair等提出的计算公式对盾构隧道施工引起的地表下土体沉降变位进行预测。通过与有限元计算结果及一些典型盾构隧道监测数据的对比分析,证明提出的估算方法能够较好地预测实际工程中盾构隧道施工引起的地表下土体的变位情况。更多还原

【Abstract】 There are a few researches on predicting subsurface ground movements induced by shield tunneling via brief estimating method till now.Based on the method used to calculate ground elastic displacement around deep tunnel and some researches on gap parameter of shield tunnel,a brief method for estimating subsurface ground horizontal movement induced by shield tunneling is presented.And a new method is presented to describe the profile of ground settlement around a shield tunnel.And then it is used to estimate subsurface ground settlement with the equation presented by Mair.And the feasibilities of these proposed methods for estimating subsurface ground movements induced by shield tunneling are verified via contrasting their analysis results with finite element analysis results and measured data of some typical project cases.更多还原