Applications of shear wave velocity in static problems

Abstract

There are many applications where shear wave velocities can be used in static geotechnical engineering problems. Moduli obtained by elastic wave propagation techniques are valuable in many design applications including two which are described involving wind induced, building rocking and bridge abutment settlement. Other applications involve the use of elastic wave velocities to evaluate the extent and degree of change produced by ground improvement techniques. One example is described in which chemically grouted soil was used in place of underpinning in coarse, saturated soil. In another example compaction grouting in talus deposits was checked with crosshole tests. New crosshole equipment which can be used in boreholes or grout holes as small as 12 inch diameter is described. Laboratory tests performed to confirm assumptions pertaining to the relationship between shear wave velocity and unconfined compression tests are also presented. Two of the applications described are associated with completion of I-70 through Glenwood Canyon of the Colorado River.