通过室内试验研究确定了上海软土的振特性指标,建立了有用的经验关系式。在此基础上,利用按软化模型概念编制的程序计算了隧道衬砌在机车荷载下的可能振陷值,结果表明,上海地铁隧道在正常情况下(即施工质量无问题,土层无突变,盾构对上层的扰动得到恢复等)因机车长期振动产生的振陷量不大于5毫米。 The laboratory tests have determined the vibration characteristics of Shanghai soft soil and established a useful empirical relationship. On this basis, the possible vibration collapse value of the tunnel lining under locomotive load was calculated using the procedure of the softening model concept. The results show that the Shanghai subway tunnel is under normal conditions (ie, there is no problem in the construction quality, there is no mutation in the soil layer, and the shield The disturbance of the upper layer is restored, etc.) The amount of vibration caused by long-term vibration of the locomotive is not more than 5 mm.