A fast fuzzy finite element approach for laterally loaded pile in layered soils

  • Pham Hoang Anh Faculty of Building and Industrial Construction, National University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam

Abstract

A fuzzy finite element approach for static analysis of laterally loaded pile in multi-layer soil with uncertain properties is presented. The finite element (FE) formulation is established using a beam-on-two-parameter foundation model. Based on the developed FE model, uncertainty propagation of the soil parameters to the pile response is evaluated by mean of the α-cut strategy combined with a response surface based optimization technique. First order Taylor's expansion representing the pile responses is used to find the binary combinations of the fuzzy variables that result in extreme responses at an α-level. The exact values of the extreme responses are then determined by direct FE analysis at the found binary combinations of the fuzzy variables. The proposed approach is shown to be accurate and computationally efficient.

Article history: Received 05 October 2017, Revised 05 March 2018, Accepted 27 April 2018

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Published
30-04-2018
How to Cite
Anh, P. (2018). A fast fuzzy finite element approach for laterally loaded pile in layered soils. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 12(3), 1-9. https://doi.org/10.31814/stce.nuce2018-12(3)-1