Chapter
Apr 26, 2012
Studies on Short Drilled Shaft Failures in Expansive Clayey Soils in a Cold Environment
Authors: Thornchaya Wejrungsikul, Richard S. Williammee, Jr., W. Thomas (Tom) Witherspoon, Nicasio Lozano, and Anand J. PuppalaAuthor Affiliations
Publication: GeoFlorida 2010: Advances in Analysis, Modeling & Design
Abstract
In the Kaufman County area within the Texas Department of Transportation's Dallas District, several short drilled shaft foundations supporting three-cable median barrier systems were observed to be distressed during severe winter storm conditions in late 2006 to early 2007. A research study was initiated at UT Arlington to determine and understand the mechanisms causing these shaft failures. The ends of the three-cable median barrier systems are fastened to a single drilled shaft foundation. In general, these shafts are short in length and the same dimensions, diameter and length, are typically used for all soil conditions. This paper presents the initial tasks of this study which includes the estimations of loads on the shafts and the design of reaction test piers for the application of inclined loads on the test shafts simulating the field conditions. Lateral load analyses results are utilized in the design of reaction shaft dimensions and spacings between reaction and test shafts. Salient details of analytical approaches used for load calculations are also included.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Thornchaya Wejrungsikul
Dept. of Civil Engineering, University of Texas at Arlington, Arlington, Texas 76019
Richard S. Williammee, Jr.
Dept. of Civil Engineering, University of Texas at Arlington, Arlington, Texas 76019
W. Thomas (Tom) Witherspoon
Consulting Engineer, Richardson, Texas 75081
Nicasio Lozano
Texas Department of Transportation, Dallas District, Texas
Anand J. Puppala
Dept. of Civil Engineering, University of Texas at Arlington, Arlington, Texas 76019
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