Urban underground structure, including tunnels, subway stations, underground pipelines, is an important part of urban infrastructure. It greatly affects urban operations, economic development and the safety of people's lives. Therefore, it is necessary to study its seismic properties.<br>Seismic research of underground structure is mainly through prototype observation, model test and theoretical analysis. Scholars have done a lot of research.<br><br>The underground structure is surrounded by the surrounding soil body, its deformation is bound by the surrounding soil body, the characteristics of the soil body itself is also critical to the seismic research of the underground structure. Underground structureexists in various soil environments, and it is necessary to pay attention to the liquefaction of soil caused by earthquakes.
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