Characterization of Frictional Interference in Closely-Spaced Reinforcements in MSE Walls

Stuedlein, Armin W.; Walters, James J.; Strahler, Andrew W.; Oregon State University

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Characterization of Frictional Interference in Closely-Spaced Reinforcements in MSE Walls

2014-09-01
By Stuedlein, Armin W. ; Walters, James J. ; Strahler, Andrew W.

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English

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Creators:

Stuedlein, Armin W. ; Walters, James J. ; Strahler, Andrew W.

Stuedlein, Armin W. ; Walters, James J. ; Strahler, Andrew W. Less -
Corporate Creators:

Oregon State University
Corporate Contributors:

United States. Dept. of Transportation. Research and Innovative Technology Administration
Subject/TRT Terms:

[+]

Backfill Soils Bridges And Other Structures Earth Walls Friction Geotechnology Highways I24: Design Of Bridges And Retaining Walls I42: Soil Mechanics Pull Out Test Reinforced Earth Research Hub Strain (Mechanics) Stresses
Publication/ Report Number:

2012-S-OSU-0009
Resource Type:

Tech Report
Geographical Coverage:

United States ; Pacific States

United States ; Pacific States Less -
TRIS Online Accession Number:

01541456
Edition:

Final Report
Corporate Publisher:

Pacific Northwest Transportation Consortium
Abstract:

This research addresses one of several knowledge gaps in the understanding of tall Mechanically Stabilized Earth (MSE) wall behavior: prediction of reinforcement loads impacted by frictional interference of closely-spaced reinforcements associated with tall walls. Key findings of this research include: (1) New backfill-specific and gravelly-soil models for the prediction of the apparent friction coefficient with normal effective stress were developed for use with ribbed steel strip reinforcements. (2) The performance of the proposed pullout resistance design models were compared to the current American Association of State Highway and Transportation Officials (AASHTO) design model and found to produce significantly more accurate predictions of the apparent friction coefficient. (3) Preliminary test results indicate that frictional interference appear to exist in the vertical direction at vertical pressures of 100 kPa and may increase the peak pullout loads of reinforcement strips as much as 40% at a spacing of 152 mm.
Format:

PDF
Funding:

DTRT12-UTC10
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:dd2fcc1d6415ca581ac7907f2c562f9dc9d15dedd19fce4cc4be9563ba4db44d
Download URL:

https://rosap.ntl.bts.gov/view/dot/28065/dot_28065_DS1.pdf
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Characterization of Frictional Interference in Closely-Spaced Reinforcements in MSE Walls

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