The study presented herein documents procedures to assess uncertainty in shear wave velocity determined via SASW, and demonstrates use of these uncertainty estimates to guide the inversion process to provide a quality, realistic shear wave velocity profile. Based upon the analyses performed, the inversion protocol guided by uncertainty estimates is shown to successfully invert dispersion data. For the site example presented, the trend in shear wave velocities determined via the protocol is quite consistent with the material classification and standard penetration test results available for the site. It is shown that uncertainty in shear wave velocity is a function of the number of soil layers used in the inversion. As the number of layers increases, uncertainty in shear wave velocity also increases. The results also suggest that the layer resolution of SASW inversion on soil sites is approximately 0.3048 m (1 ft).
展开▼