中文摘要：

文章采用结构变形和自由场变形之间的相互作用系数修正反应加速度法中的地震动参数．近似考虑结构存在对场地地震动参数的影响，进而得出了修正的反应加速度法。为了验证该方法的适用性。设定某种地质条件下的典型圆形盾构隧道为基准模型，使用反应加速度法、修正方法、时程法计算衬砌刚度变化时的结构内力。结果表明，若以时程法为准，修正方法叮提高反应加速度法的精度，且对设计中关注的弯矩精度提高最大。

英文摘要：

In this paper, the interaction coefficient between structural deformation and free field distortion is used to correct the ground motion parameters in the response acceleration method, for approximately considering the influence of structures on ground motion parameters. The response acceleration method is therefore modified. In order to verify the applicability of this method, it is assumed that a typical circular shield tunnel is the benchmark model under certain geological conditions, and the response acceleration method, the modified method, and dynamic time-history method are then utilized to calculate the structural internal force under different degrees of lining stiffness. Results indicate the accuracy of the response acceleration method can be improved taken the time-history method as the reference, especially for the bending moment.