Reliability-Based Analysis of Internal Limit States for MSE Walls Using Steel-Strip Reinforcement

AbstractThis paper demonstrates reliability-based analysis of tensile strength and pullout limit states for mechanically stabilized earth (MSE) walls constructed with steel-strip reinforcement. Five different reinforcement tensile load models, three different pullout models, and one tensile strength...

Full description

Saved in:
Bibliographic Details
Published in:Journal of geotechnical and geoenvironmental engineering 2020-01, Vol.146 (1)
Main Authors: Bozorgzadeh, Nezam, Bathurst, Richard J, Allen, Tony M, Miyata, Yoshihisa
Format: Article
Language:English
Subjects:
Accuracy
Bias
Computer simulation
Confidence
Corrosion
Earth
Equations of state
Limit states
Load resistance
Model accuracy
Monte Carlo simulation
Reinforcement
Reliability
Reliability analysis
Reliability engineering
Spreadsheets
Statistical analysis
Statistical methods
Steel
Steel construction
Strip steel
Technical Papers
Tensile strength
Tensile stress
Uncertainty
Variability
Walls
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractThis paper demonstrates reliability-based analysis of tensile strength and pullout limit states for mechanically stabilized earth (MSE) walls constructed with steel-strip reinforcement. Five different reinforcement tensile load models, three different pullout models, and one tensile strength model were examined. The accuracy of each model was assessed probabilistically using bias statistics in which bias was the ratio of the measured value to the predicted value. The tensile limit state included uncertainty in the tensile strength due to variability in original strength of the steel and variability in potential loss of strength due to corrosion. Reliability-based analyses were carried out considering the accuracy of the load and resistance models that appear in each limit state equation plus uncertainty due to the confidence (level of understanding) of the engineer at the time of design. The reliability index was computed using Monte Carlo simulation of the tensile strength limit state and a convenient closed-form solution that is easily implemented in a spreadsheet for the pullout limit state. A MSE wall example was used to demonstrate the general approach and to compare margins of safety using different load and resistance model combinations and reinforcement strips of different initial thickness.
ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)GT.1943-5606.0002192