Drilled Shaft Foundations for Noise Barrier Walls and Slope Stabilization: Executive Summary

2002Executive summary.PDFResearch PaperFHWA/OH-2002/03814705(0)Tunnel shaftsDrillingLateral supportsLoadsSlope stabilityDrilled shaftsLateral loadsSPTSlope stabilityOhioUniversity of Akron. Dept. of Civil EngineeringLiang, RobertUniversity of Akron. Dept. of Civil EngineeringOhio. Dept. of TransportationNTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-Soils and GeologyUS Transportation CollectionThis research project is focused on two primary objectives. The first objective relates to the development of a methodology for using the SPT (Standard Penetration Test) results to design the laterally loaded drilled shafts. The second objective aims to develop a methodology for design of drilled shafts to stabilize unstable slopes or embankments. The research has resulted in suggestions of two implementation items. In the course of the research work, a large database has been established to contain a total of 58 lateral load test results and the pertinent soil information at each test site. Among these test data, 32 load tests are from ODOT projects performed by the principal investigator. The drilled shaft sizes range from 10 ft to 90 ft in length, and 16 inch to 72 inch in diameter. Both cohesionless and cohesive soils are present in the test sites.88