【摘要】 为研究高速地铁列车穿越可液化地层情况下，采用动三轴试验的方法，探究隧道周边土体在列车运营荷载下液化的可能性问题。通过采集现场土进行试验，其中动荷载幅值大小依据现场实测振动数据建立的单洞双线通车数值模拟计算结果确定。分析在振动荷载作用下试样孔压的发展，依据孔压与围压的相对大小关系进行液化判别，并提出处理措施建议。更多还原

【Abstract】 In order to study the high-speed subway trains passing through the liquefiable formation, the dynamic triaxial test method was used to investigate the possibility of liquefaction of soil around the tunnel under train operation load. The test was carried out by collecting the field soil. The amplitude of dynamic load is determined according to the numerical simulation results of single-hole double-track traffic based on field measured vibration data. The development of pore pressure under vibration load was analyzed, liquefaction discrimination was made according to the relative relationship between pore pressure and confining pressure, and the treatment measures were proposed.更多还原