Type of Document	Master's Thesis
Author	Helmers, Matthew Justin
Author's Email Address	mhelmers@vt.edu
URN	etd-62197-23325
Title	Use of Ultimate Load Theories for Design of Drilled Shaft Sound Wall Foundations
Degree	Master of Science
Department	Civil Engineering
Advisory Committee	Advisor Name Title Brandon, Thomas L. Filz, George M. Duncan, James Michael Committee Chair
Keywords	Lateral Loads Drilled Shafts Field Load Tests
Date of Defense	1997-06-20
Availability	unrestricted
Abstract A study was performed to investigate the factors that affect the accuracy of the procedures used by the Virginia Department of Transportation for design of drilled shaft sound wall foundations. Field load tests were performed on eight inch and nine inch diameter drilled shafts, and the results were compared to theoretical solutions for ultimate lateral load capacity. Standard Penetration Tests were run in the field and laboratory strength tests were performed on the soils from the test sites. It was found that published correlations between blow count and friction angle for sands and gravels can be used to estimate friction angles for the partly saturated silty and clayey soils encountered at the test sites. A spreadsheet program was developed to automate the process of determining design lengths for drilled shaft sound wall foundations. The spreadsheet was used to investigate the effects of different analysis procedures and parameter values on the design lengths of drilled shaft sound wall foundation.
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