Determination of SASW Shear-Wave Velocity Along a Segment of Interstate 70 in St. Louis, Missouri
Matching Research Agency
|Missouri Department of Transportation (MoDOT)|
University of Missouri-Rolla
Department of Geology and Geophysics
125 McNutt Hall
Rolla, Missouri, 65401
|Graduate and undergraduate students will be involved in the project.|
|The objective is to use the SASW technique to determine the shear-wave velocity of the soil along a paved section of interstate 70 (I-70) in downtown St. Louis, Missouri.|
|The University of Missouri-Rolla (UMR) proposes to acquire multi-channel surface-wave (seismic analysis of surface waves; SASW) seismic data along a test segment (~8000 lineal foot transect) of interstate I-70 in downtown St. Louis. These SASW data will be processed and analyzed (seismic analysis of surface waves), and used to construct subsurface shear-wave velocity profiles (to depths on the order of 50 feet) at station intervals on the order of 40 feet. The main project deliverable will be a cross-sectional transect (along the test segment of interstate) depicting estimated depth to bedrock and spatial variations in the shear-wave velocity of the soil and bedrock. |
The interpretation/inversion of the surface wave (SASW) data will be constrained by available borehole control. The SASW shear-wave velocity curves will be compared and contrasted to SCPT data (to be acquired).
This proposed project supports MoDOT's Research Focus Plan in that the evaluation of developing surface wave technology was identified as a priority for the MoDOT Research, Development & Technology (RDT) Geotechnical Technical Advisory Group (TAG) during the MOTREC/MoDOT biennial meeting (8/7/01).
|IThe main project deliverable will be a cross-sectional transect (along the test segment of interstate) depicting estimated depth to bedrock and spatial variations in the shear-wave velocity of the soil. Station-to-station control along the profile will be ~40 feet. The cross-sectional transect will be included in a comprehensive report detailing SASW methodology (theory and practice).|
The project will give UMR researchers the opportunity to develop expertise in the developing field of SASW.
|Non-destructive/and non-invasive imaging.|
|Project Start Date:||August 1, 2003|
|Project End Date:||June 30, 2004|
Relationship to other Research/Projects
|UMR faculty members are engaged in a number of externally-funded projects that involve the non-destructive imaging of engineered structures and non-invasive site characterization.|
Technology Transfer Activities
|Expertise with respect to acquisition, processing, interpretation and application of geophysical technologies will be shared via publications and presentations.|
Transportation Research Board Keywords
|Non-destructive imaging, non-invasive imaging, technology transfer, education.|