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Hyperbolic P-y Criterion For Cohesive Soils

Submitted2008-04-08
Last Update2008-04-08
TitleHyperbolic P-y Criterion For Cohesive Soils
Author(s)Author #1
Author title:
Name: Y. Liang Robert
Org: Dept. of Civil Engineering, The University of Akron
Country: 0
Email: rliang@uakron.edu

Author #2
Author title:
Name: S. Shatnawi Ehab
Org: Dept. of Civil Engineering, The University of Akron
Country: 0
Email: ehab34@yahoo.com

Author #3
Author title:
Name: Nusairat Jamal
Org: E.L. Robinson
Country: 0
Email: jamal@elrobinson.com

Other Author(s)
Contact AuthorAuthor #1
Alt Email: rliang@uakron.edu
Telephone: 44325-3905
Keywordsp-y criterion, Cohesive soils; Intermediate geomaterial, Lateral loads, Drilled shaft.
AbstractDrilled shafts have been frequently used as a foundation to support lateral loads. The p-y method of analysis has been widely used for predicting the behavior of laterally loaded drilled shafts. The existing p-y criteria for cohesive soils are divided into soft or stiff clays, on the basis of a limited number of lateral load test results. Currently, there is no p-y criterion developed for cohesive intermediate geomaterial. In this paper, a hyperbolic equation for p-y curve is presented for cohesive soils and intermediate geomaterials. Based on 3-D FEM simulation results, a new empirical equation is presented for calculating the initial tangent to p-y curve. The proposed hyperbolic p-y criterion is verified by using the results of six full-scale lateral load tests on fully instrumented drilled shafts with diameters ranging from 0.76 m to 1.83 m in the geo-medium ranging from soft clays to intermediate geomaterial. The proposed hyperbolic p-y criterion is shown to be capable of predicting the loaddeflection and bending moments of the laterally loaded shafts for the six cases studied in this paper.
Paperview paper 4.pdf (503KB)

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