Synthesis: Rip-Rap for Scour Countermeasures
The use of rip-rap to protect against scour is very common both at the design stage and as a repair option. When the rip-rap fails, new rip-rap must be placed and additional cost is incurred. Making sure that the rip-rap will perform as planned will save money by avoiding sustained maintenance or replacement. Rip-rap is used extensively to protect abutments from scour and to repair bridge piers that are experiencing excessive scour depth. In many instances, the rip-rap has not performed correctly. At the pier, this can be due to the soil below the rip-rap continuing to scour away.On the abutment slope, this can be due to the rip-rap failing the slope because of the added weight from the rip-rap. There is a need to develop practical guidelines to ensure that the rip-rap performs as intended. The research team will conduct a synthesis of national research and in-use structures within the US and internationally to determine whether a filter is necessary or not between the rip-rap and the native soil. If a filter is found necessary, researchers will develop a specification for the filter. The synthesis study will address the stability of slopes with rip-rap covers and the research team will develop recommendations to ensure the stability of the slope after rip-rap placement.
Language
- English
Project
- Status: Completed
- Funding: $65000
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Contract Numbers:
0-7091
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Sponsor Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Managing Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Project Managers:
Pridgen, Shelley
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Performing Organizations:
Texas Transportation Institute
Texas A&M University System
3135 TAMU
College Station, TX United States 77843-3135 -
Principal Investigators:
Briaud, Jean-Louis
- Start Date: 20200901
- Expected Completion Date: 20210831
- Actual Completion Date: 20210831
Subject/Index Terms
- TRT Terms: Filters; Riprap; Scour; Slope stability
- Subject Areas: Bridges and other structures; Highways; Hydraulics and Hydrology; Materials;
Filing Info
- Accession Number: 01766376
- Record Type: Research project
- Source Agency: Texas Department of Transportation
- Contract Numbers: 0-7091
- Files: RIP, STATEDOT
- Created Date: Mar 1 2021 5:56PM