Author : Vincent John DeRosa
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (654 download)
Book Synopsis Lateral Loading of Battered Piles with Respect to Footing Size by : Vincent John DeRosa
Download or read book Lateral Loading of Battered Piles with Respect to Footing Size written by Vincent John DeRosa and published by . This book was released on 2010 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pennsylvania Department of Transportation's current policy restricts the lateral loading of battered piles to a 3.5 to 1 vertical to horizontal load ratio. Accompanying this is the assumption that all lateral force is resisted by battered piles and conversely, none of the lateral force is resisted by vertical piles. These two decisions result in the need for additional piles and increased footing sizes, creating large total foundations. The purpose of this study is to analyze these two specifications in an attempt to reduce the required foundation size. Traditional Euler beam theory is studied to determine the behavior of battered and plumb piles, but is complicated due to nonlinear soil-pile interaction. As a result, the p-y method for relating pile deflection to soil resistance was used to predict pile behavior under the influence of varying load ratios in three different types of soils. Because the p-y method is an iterative process, the computer program Lpile was utilized to create the different curves based on individual soil and pile properties. The curves were then used to develop multi-linear spring constants that can effectively represent the soil in a structural analysis model. Piles at three different batters in three types of soil were analyzed under varying load ratios to determine the effects on pile deflection and bending moment. The results indicate that pile behavior is governed by the beam-column interaction equation and suggests that the actual lateral loads acting on the pile play a much more significant role in pile behavior than load ratios. In addition, results indicate that PennDOT's assumption that all lateral force is resisted by battered piles is extremely conservative and plumb piles are shown to have significant lateral resistance.