This article presents a method of regression analysis to determine the influence of these parameters on the maximum values of the internal forces in the tunnel structure. In which, the data analysis is the internal forces in the tunnel structure calculated by Plaxis software with different artificial accelerations with same target response spectrum generated by random simulation. The results show that the peak acceleration value is not the only parameter affecting the internal force of the structure, but also some other parameters such as: peak ground velocity, significant time (t5-95), Arias intensity and effective acceleration.