Abstract:
Every second can count when trying to board a departing/connecting flight or catch a ride-share to your final destination. Hartsfield-Jackson Atlanta International Airport is in the midst of a project that aims to cut about 13 seconds between automated people mover trains (Plane Train) that move passengers between the terminals and concourses. The project involves extending the Plane Train tunnel west from its existing terminus under the domestic terminal. Working from inside non-public areas of the existing terminal, Keller North America, Inc. (Keller) incorporated systems of micropile-supported steel beams and grillage to both underpin existing columns and support open-cut excavation at the tie-in of the new to the existing tunnel. Dewatering was provided for a challenging section of mixed face, sequentially excavated tunnel and an automated instrumentation system monitored the performance of the construction and its impact to the existing structure.