The tunnel portal is a seismically weak part of the tunnel. To improve the seismic performance of the tunnel portal, reliable portal slope reinforcement measures were investigated, and a series of shaking table tests of the tunnel portal and slope which were reinforced by micropiles were conducted. The test equipment, similarity relation, material, test process, and loading conditions were introduced in detail. Two types of earthquake waves (Kobe and Wenchuan waves), whose peak accelerations were modified to 0.125 g, 0.25 g, 0.375 g, 0.5 g, and 0.7 g, were input in the transverse direction. Through the application of the Pearson correlation coefficient, 2-norm deviation, fast Fourier transform, frequency transfer function, Hilbert-Huang transform, and other means, an in-depth analysis of the data was conducted; the results indicated that the micropiles can effectively reduce the effect of the portal slope on the amplification of acceleration, lower the acceleration response of surrounding rock, improve the predominant frequency of surrounding rock, slow down the damage of the tunnel portal slope due to vibration, and decrease the internal force of the lining.

隧道口是隧道的抗震薄弱部位。为提高隧道洞口的抗震性能，研究了可靠的洞口边坡加固措施，对微型桩加固的洞口和边坡进行了系列振动台试验。详细介绍了试验设备、相似关系、材料、试验过程、加载条件等。在横向输入峰值加速度分别为0.125 g、0.25 g、0.375 g、0.5 g和0.7 g的两种地震波（神户波和汶川波）。通过应用皮尔逊相关系数、二范数偏差、快速傅里叶变换、频率传递函数、希尔伯特-黄变换等手段，对数据进行深入分析；