Evaluation of Mechanically Stabilized Embankments as Support for Bridge Structures

摘要

An evaluation is made of the performance of mechanically stabilized embankments (MSE) as support for bridge structures in the state of Ohio. The study is in response to concerns of the Ohio Department of Transportation (ODOT) relative to the ability of contractors to construct such embankments to specifications, the suitability of the specifications being used, and the long term stability of the embankments under Ohio's environment and usage conditions. Data collected during the study include questionnaire responses from project engineers involved with MSE construction, inspection of existing MSE sites, and laboratory testing of soil samples obtained from selected MSE sites. Conclusions relative to the performance of existing mechanically stabilized embankments supporting bridge structures, and recommendations relative to design and construction modifications to improve performance are presented.