U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
|Project Name:||Performance Tests for Geosynthetic Reinforced Soil (GRS)|
|Start Date:||August 15, 2011|
|End Date:||September 2, 2013|
|First Name:||Jennifer E|
|Office:||Office of Infrastructure Research and Development|
|Team:||Bridge and Foundation Engineering Team [HRDI-40]|
|Program:||Innovative Bridge Research and Deployment|
|Project Description:||A performance test is a load test on a geosynthetic reinforced soil column. A resulting stress-strain (or load-settlement) curve describes the stiffness and capacity of that composite. Different factors that affect performance (e.g. reinforcement material, reinforcement strength, reinforcement spacing, backfill type) were investigated. In addition, since the tests are loaded to failure, a LRFD calibration for bearing resistance was performed.|
The primary objectives of this research report are to:
(1) Build a database of Geosynthetic Reinforced Soil (GRS) material properties that can be used by designers or for Load and Resistance Factor Design (LRFD) calibration.
(2) Evaluate the relationship between reinforcement strength and spacing.
(3) Quantify the contribution of the frictionally connected facing elements at the service limit and strength limit states.
(4) Assess the new internal stability design method proposed by Adams et al. 2011a for GRS.
(5) Perform a reliability analysis of the proposed soil-geosynthetic capacity equation for LRFD.
|Test Methodology:||Laboratory testing.|
|Expected Benefits:||The expected benefit is advancement of the design of geosynthetic reinforced soil walls and abutments.|
|Deliverables:||Name: Research report and database.|
Product Type(s): Research report, Data, Article
Description: A research report will be published detailing the results of the experimentation. A database will also be developed with various soil types, reinforcement materials, reinforcement strengths, and reinforcement spacing.
|Project Findings:||See FHWA-HRT-13-066 (http://www.fhwa.dot.gov/publications/research/infrastructure/structures/13066/)|
|FHWA Topics:||Roads and Bridges--Design|
Planning and Design
|Subject Areas:||Bridges and other structures