Washington Dulles International Airport (IAD), which serves the metropolitan area of the Nation's Capitol, is currently undergoing a massive construction program for handling increased passenger demand. Since inception, the airport has used mobile lounges to ferry passengers from the main terminal to the various mid-field terminals and gates. In the coming years, this will change as the first elements of the Automated People Mover (APM) system are placed in operation. The APM system will utilize electric-powered rail passenger cars running underground. The rail network will connect a series of passenger stations beneath the main terminal and each of the mid-field terminals. Safety considerations and possible adverse effects to adjacent structures, due to this construction, required an instrumentation program to provide timely and reliable information about the performance of both excavation retention systems and tunnel construction. Project plans and specifications outlined a series of instruments to include, among others, inclinometers and borehole extensometers to detect possible adverse movement. Due to a required need for frequent readings in high-volume traffic areas and the imposing conditions of placing an instrumentation system within active aircraft operations areas, an automated data acquisition program was proposed. This case study examines the design, implementation and management of data for an automated total station (AMTS), inplace inclinometers (IPIs), and wireless multiposition borehole extensometers (WMPBX) used in an active airport environment. Special consideration of electromagnetic interference (EMI), instrument design considerations for use in difficult access, high-volume traffic areas, and automated data management are provided.
Instrumentation during APM Construction at Dulles International Airport
Seventh International Symposium on Field Measurements in Geomechanics ; 2007 ; Boston, Massachusetts, United States
FMGM 2007 ; 1-9
2007-09-21
Conference paper
Electronic Resource
English
Dulles International Airport Construction Challenges
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