Finite Element Analysis and Investigation of Double-Row Piles Supporting Structure

Abstract:

The double-row piles supporting structure is a new type of supporting and protecting for deep foundation excavation. It is widely used to in design of deep foundation pit. Now how to simply and effectively design the structure of double-row piles is in a research and discuss stage. Using the Midas GTS finite element method, the displacement and stress distribution of double-row piles in the different stages of excavation are obtained, and the horizontal displacement and stress distribution of double-row piles in the different stages of excavation are calculated. The results of Midas GTS finite element analysis as follows: (1) after the excavation of foundation pit, the horizontal displacement of pile-top is maximum. The horizontal displacement decreases gradually with depth increases. And the displacement of front row piles is larger than that of back row piles; (2) the maximum shear stress is at the distance 5m to the foundation basement. The higher bending moment at the pile-top and the distance 10m to the foundation basement are consistent with the actual monitoring date. (3) the results of finite element analysis is close to the Richard software and actual monitoring data. It is show that using the finite element analysis to analyze the double-row piles supporting structure with is veritable and credible.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 779-785
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.779
• Online since: November 2013
• Authors: Liang Gu*
• Keywords: Deep Foundation Pit, Double-Row Piles, Finite Element Analysis (FEA), Stress and Deformation Characteristics

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