Urban underground structures,especially tunnels,subways,and pipeline systems,are all crucial parts of the infrastructure of modern society.By the end of 2021,China had opened rail transit operations in 51 cities with a total mileage of 8708 km.Considering their importance for life safety and the economy,appropriate seismic design is of prior necessity.Historically,underground infrastructure has experienced a lower rate of damage than surface structures.However,recent earth-quakes,such as the Osaka-Kobe earthquake(1995),the Wenchuan earthquake(2008),have challenged the previous perception.In this special issue,ERA compiled and published related research articles investigating timely advances on the seismic performance of under-ground structures.The special issue includes 10 papers,covering the experimental investigation of the seismic response and damage of un-derground structures under different adverse soil conditions,isolation methods for underground structures,etc.

Su Chen

Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education,Beijing University of Technology,Beijing 100124,China

地震研究进展（英文）

[1]Su Chen-.Preface to the special issue on seismic performance of underground structures:From experiments to analysis)[J].地震研究进展（英文）,2022(04):1-2

subways,quakes,derground

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