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 underground structure earthquake resistance. Underground structures are constructed in a variety of soil environments, some of which can be liquefy by earthquake. Seismic liquefaction of soil will have serious adverse effects on the site and structure.
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