Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Sherafati, Ardalan | Chafi, Mehdi Sotudeh | Azizinamini, Atorod
Affiliations: Graduate Research Assistant, Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA | Research Associate, Department of Mechanical Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA | Professor, Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
Note: [] Corresponding author. Ardalan Sherafati, Graduate Research Assistant, Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583-0854, USA. E-mail: asherafati@huskers.unl.edu
Abstract: Soil-structure and especially soil-pile interaction is one of the main sources of complication in the analysis of jointless bridges. Because of the complexity of the problem, calculation of the critical buckling load of embedded piles has always been a concern to the designers since piles are relatively slender elements. In the current design method, for simplification it is assumed that soil reaction is a linear function of the lateral displacement. In this paper, a new approach is proposed which utilizes the energy method and incorporates p-y curves to estimate the critical axial load of piles embedded in cohesive soil. Pile head displacement is also incorporated into capacity calculation. In this method, the soil reaction is a nonlinear function of lateral displacement and can efficiently model the soil-structure interaction. The method is validated with experimental data for solving the governing differential equation along with calculation of buckling load. Results of parametric study reveal that buckling loads estimated by equivalent cantilever method are highly above the corresponding loads estimated by the energy method at relatively small pile head movement. Furthermore, for this condition it is shown that fully embedded piles will fail before reaching the estimated buckling load because of yielding; consequently, buckling analysis does not govern the design of piles fully embedded in cohesive soil. However for partially embedded piles, the buckling load may govern.
Keywords: Pile buckling, energy method, p-y curves, jointless bridges
DOI: 10.3233/BRS-2012-0034
Journal: Bridge Structures, vol. 8, no. 1, pp. 15-24, 2012
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl