Mark K. Quinn - Duluth GA, US Alexander V. McGillivray - Atlanta GA, US Paul W. Mayne - Marietta GA, US
Assignee:
Georgia Tech Research Corporation - Atlanta GA
International Classification:
G01V 1/147 G01V 1/153 G01V 1/155
US Classification:
181121, 367189
Abstract:
Remotely operated rotary actuated shear wave generating apparatus and methods that generate horizontally polarized vertically propagating shear waves for use in down-hole shear wave velocity measurements. Seismic signals are generated by an offset mass rotating in a plane perpendicular to the surface of the ground, which impacts an impact member coupled to the ground. The energy of impact is transmitted to the ground parallel to the surface of the ground. The apparatus uses a spring-loaded rotating mass that has a rotary motion. Because acceleration of the mass is not horizontal, reaction forces caused by acceleration of the mass create less horizontal shear stress in the ground prior to the desired time (impact). Reaction forces of the accelerated rotating mass does not generate undesirable waves that obscure the desirable waves caused by impact with the impact member. The source generates transient shear waves repeatedly at constant intervals.
Georgia Institute of Technology
Professor at Georgia Institute of Technology
Education:
Cornell University 1987 - 1990
Doctorates, Doctor of Philosophy, Civil Engineering, Engineering, Environmental Engineering, Philosophy
Georgia Institute of Technology
Skills:
Geotechnical Engineering
Interests:
Site Characterization In Situ Testing Cone Penetrometer Soil Properties Music Downhole Geophysics Flat Dilatometer
Geosupport 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems Proceedings of Sessions of the Geosupport Conference
Geotechnical Site Characterization: Proceedings of the First International Conference on Site Characterization, ISC'98, Atlanta, Georgia, 19-22 April 1998
Geotechnical Site Characterization: Proceedings of the First International Conference on Site Characterization, ISC'98, Atlanta, Georgia, 19-22 April 1998
Paul Mayne (2001-2005), Kathryn Seegmiller (2002-2005), Andrea Monroe (1993-1999), Susan Rogers (1995-2002), Angie Ellett (1985-1991), Stephanie Baird (2002-2005)