This report gives an overview of research conducted for FCP Project 5B, Tunneling Technology for Future Highways. That project was aimed at research including state-of-the-art tunneling techniques unknown in the United States although accepted by other countries, and more experimental tunneling techniques not yet generally accepted. Specific research studies dealt with cut-and-cover tunnels, site investigation, earth movements, environmental criteria, and supporting activities (research conferences, information exchange, etc.). The report summarized research on: cost, classical ground control techniques, slurry walls, tie backs, anchors and grouting for cut-and-cover tunnels; planning of site investigations, direct mechanical measurement (pressuremeters, cone penetrometers, vanes, piezometers) of soil properties, and indirect measurement by sensing techniques (aerial photography, acoustic, seismic, and electromagnetic systems); prediction and control of ground movements including phenomenological study and development of lining techniques; guidelines for the environment including air movement and pollution, tunnel lighting, traffic operation, driver behavior, safety and fire hazards.
In Florida, many structures are built on driven piles. Though it seems straightforward, piledriving involves complex interactions between the pile, th...
The New Madrid Fault Zone (NMFZ) passes through the middle of northeast Arkansas (NEA), which is located in the western part of the upper Mississippi ...
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United States Department of Transportation
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