Evolution of Soil Arching: 2D Analytical Models

AbstractThree soil-arching evolution patterns in unreinforced piled embankments were observed in a series of two-dimensional (2D) model tests using a multitrapdoor test setup. These include the triangular expanding pattern, the tower-shaped evolution pattern, and the equal settlement pattern. The in...

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Bibliographic Details
Published in:International journal of geomechanics 2018-06, Vol.18 (6)
Main Authors: Rui, Rui, van Tol, Frits, Xia, Yuan-you, van Eekelen, Suzanne, Hu, Gang
Format: Article
Language:English
Subjects:
Arches
Distribution
Embankments
Empirical equations
Evolution
Height
Inclination
Load distribution
Load distribution (forces)
Mathematical models
Model matching
Model testing
Slip
Soil
Soil analysis
Stress analysis
Stress concentration
Stress distribution
Technical Papers
Towers
Two dimensional analysis
Two dimensional models
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Summary:AbstractThree soil-arching evolution patterns in unreinforced piled embankments were observed in a series of two-dimensional (2D) model tests using a multitrapdoor test setup. These include the triangular expanding pattern, the tower-shaped evolution pattern, and the equal settlement pattern. The inclination of the slip surfaces and the height of the vertical slip surfaces that enclose the tower-shaped arches were found to be the critical parameters describing the arching evolution. Three analytical models were proposed to describe the evolution processes of the three arching-evolution patterns and to find the stress distributions of the corresponding processes. Load distribution equations were also derived from these models. Using the empirical relationships between the inclination of the slip surfaces and the tower height and settlement, the stress distribution ratio during the entire evolution process was calculated. The models matched the model tests well.
ISSN:1532-3641
1943-5622
DOI:10.1061/(ASCE)GM.1943-5622.0001169