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Seismic Crosshole Tomography Studies of Foundation Sites in Karst Terrance
Crosshole tomography field data was collected on bridge foundation sites in Pennsylvania, in close proximity to geotechnical boring locations. Profiles determined from these field measurements were plotted against drilling data, and these comparisons revealed ability of crosshole wave velocities to differentiate overburden soil from rock. In addition, foundation construction data was collected and compared with crosshole test results determined prior to construction. In particular, pile tip elevations at driving refusal were compared with crosshole test results. From these data it appears that seismic wave tomograms can characterize the soil/rock interface, and that it is possible to predict expected design pile lengths based upon a measured seismic wave velocity tomogram. It can be concluded from these site comparisons that geophysical techniques such as seismic crosshole tomography can provide important additional information to site characterization for bridge foundations in karst terrane.
Seismic Crosshole Tomography Studies of Foundation Sites in Karst Terrance
Crosshole tomography field data was collected on bridge foundation sites in Pennsylvania, in close proximity to geotechnical boring locations. Profiles determined from these field measurements were plotted against drilling data, and these comparisons revealed ability of crosshole wave velocities to differentiate overburden soil from rock. In addition, foundation construction data was collected and compared with crosshole test results determined prior to construction. In particular, pile tip elevations at driving refusal were compared with crosshole test results. From these data it appears that seismic wave tomograms can characterize the soil/rock interface, and that it is possible to predict expected design pile lengths based upon a measured seismic wave velocity tomogram. It can be concluded from these site comparisons that geophysical techniques such as seismic crosshole tomography can provide important additional information to site characterization for bridge foundations in karst terrane.
Seismic Crosshole Tomography Studies of Foundation Sites in Karst Terrance
Hiltunen, Dennis R. (author) / Dunn, Patrick W. (author)
GeoShanghai International Conference 2006 ; 2006 ; Shanghai, China
2006-05-15
Conference paper
Electronic Resource
English
Seismic Crosshole Tomography Studies of Foundation Sites in Karst Terrane
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