Shape of soil arching and development of its effect in a piled embankment

YANG Tao; WANG Gang-gang; YAN Ye-qiang; LI Guo-wei

doi:10.11779/CJGE201404018

Volume 36 Issue 4

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Chinese Journal of Geotechnical Engineering > 2014 > 36(4): 731-735. > DOI: 10.11779/CJGE201404018

YANG Tao, WANG Gang-gang, YAN Ye-qiang, LI Guo-wei. Shape of soil arching and development of its effect in a piled embankment[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(4): 731-735. DOI: 10.11779/CJGE201404018

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Shape of soil arching and development of its effect in a piled embankment

1. Department of Civil Engineering , University of Shanghai for Science and Technology, Shanghai 200093, China; 2. Research Institute of Road and Railway Engineering, Hohai University, Nanjing 210098, China

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Received Date: July 21, 2013
Published Date: April 21, 2014

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Abstract

A two-dimensional elastic-plastic finite element model which can simulate the process of development of soil arching in a piled embankment is established. The shape of soil arching in a piled embankment is simulated. Then, parameter study on height of soil arching is made. Finally, the behavior of embankment load transferring from the surrounding soils to the pile caps is investigated. The results indicate that the shape of soil arching in a piled embankment is semi-elliptic under the condition of plane strain. The influence of the values of internal friction angle and cohesion of embankment fill on the height of soil arching is smaller. The height of soil arching increases firstly with the increase of net spacing between pile caps, and then decreases gradually. Furthermore, it increases?linearly firstly with the increase of the height of embankment, and then remains the same for a higher embankment. The load shared by the subsoil remains unchanged after the entire soil arching appears.
- piled embankment,
- shape of soil arching,
- differential settlement,
- plane strain,
- FEM

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