Alternative performance-based seismic design for tunnels in soft soils at Mexico City New International Airport
For the Mexico City New International Airport, six tunnel structures are being designed for utilities, public road and ground service equipment. They have a total length of 8 km. The design of these tunnels has been challenging given the very soft soil conditions, heavy airplane and seismic loads. The Mexican Valley is well known for the particular soils and severe damages caused to infrastructure during earthquakes. This paper provides an overview of soil conditions, seismic setting, response analysis considering surface waves and adopted seismic-resistant design philosophy implementing soil-structure interaction models and application on structural joints.