Shear wave velocity profiles determined from the inversion of surface wave velocity data [abstract]

Abstract only availableSurface wave velocity measurements are a non-destructive and non-intrusive means to determine the shear wave velocity (VS) profile at soil sites. The VS profile is a primary input for site amplification calculations and is also used in the International Building Code to determine site classification. In many cases, surface wave measurements are performed at sites where complicating conditions exist, such as velocity inversions or embedded stiff layers. The purpose of this research is to investigate the effectiveness of surface wave inversion procedures at complex geotechnical sites. This was accomplished by using simulated surface wave measurements at both simple and complex soil sites. The stimulated surface wave data was analyzed using the Spectral-Analysis-of-Surface-Waves (SASW) method and a linearized least-squared inversion approach was performed to estimate the VS profile. Comparisons are presented between the actual and inverted VS profiles for several common complex geotechnical profile conditions.College of Engineering Undergraduate Research Optio

MoDOT Pavement Preservation Research Program

The following report documents a research project on pavement preservation performed by the Missouri University of Science and Technology (Missouri S&T) and the University of Missouri-Columbia (UMC) on behalf of the Missouri Department of Transportation (MoDOT). the report consists of a Summary Report followed by six detailed technical reports. to achieve the goal of reducing maintenance costs and improving minor road ratings, MoDOT has embarked upon a plan of formalizing its maintenance/preservation planning. to assist in developing the plan, MoDOT contracted with the Missouri S&T and UMC to conduct a research project, entitled MoDOT Pavement Preservation Research Program . the product of this research would become a part of MoDOT’s overall Pavement Management System. the overall objective of the research was to provide a process that would allow MoDOT to do more selective planning, better engineering and more effective maintenance to minimize costs while maintaining adequate safety and performance of Missouri’s pavements. Six Guidance Documents were to ultimately be created which would act as guidelines for MoDOT’s Pavement Specialists and Engineers. the work was divided into six Tasks, each with its own research team