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

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

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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.

File Language:

English

[PDF - 10.79 MB]

Details

Creators:

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

Oregon State University
Corporate Contributors:

United States. Department of Transportation. Research and Innovative Technology Administration
Subject/TRT Terms:
Publication/ Report Number:

2012-S-OSU-0009
Resource Type:

Tech Report
Geographical Coverage:

United States;Pacific States
Edition:

Final Report
Corporate Publisher:

Pacific Northwest Transportation Consortium (PacTrans) (UTC)
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
Download URL:

https://rosap.ntl.bts.gov/view/dot/28065/dot_28065_DS1.pdf
File Type:

[PDF - 10.79 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:66fd2f1a006e765cd983aa1805ae9f1aac12eff2f18d2f101484245c5a8f32947b1d03d4c34308c9f85ee8275cec37b841113d61496293e517f53e529b19b8c2

File Language:

English

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