In order to invert shallow or deep underground structure by using high-speed train source, the far-field wave field excited by high-speed train is simulated by wave front superposition, solving acoustic wave field and elastic wave field in semi-infinite space. During the calculation, a pier of high-speed rail is regarded as a point source. The results of wave field calculated by convolution of different types of source time function and Greenâ€™s function show that the wave field corresponding to the low frequency source time function of pier static response considering the influence of high-speed train deadweight is similar to the actual record.

%U https://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2019.074