Influence of backfill type on the load-bearing performance of GRS bridge abutments

Autor:	J. Boutin, Kianoosh Hatami
Rok vydání:	2022
Předmět:	Abutment Geotechnical engineering Geosynthetics Geotechnical Engineering and Engineering Geology Material properties Bridge (interpersonal) Load bearing Geology Civil and Structural Engineering
Zdroj:	Geosynthetics International. 29:506-519
ISSN:	1751-7613 1072-6349
Popis:	The influence of backfill type and material properties on the performance of field-scale geosynthetic reinforced soil (GRS) abutment models is investigated. Two alternative types of backfill as recommended in the Federal Highway Administration (FHWA) guidelines (called open-graded and well-graded) were used to build two field-scale model abutments and compare their load-bearing performance under a loading beam. Results are presented and discussed relative to the loading beam settlement, facing deformation and reinforcement strains. The well-graded backfill was found to result in smaller beam settlements and facing lateral deformations, especially at smaller loads that were comparable to service load levels. However, it was significantly faster and easier to compact the open-graded aggregate to the unit weight recommended in the guidelines. Nevertheless, performances of both abutment models were found to be satisfactory relative to the limiting requirements on the beam settlement and facing deformations at service load levels.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2e82c5dbe6e40c5b79498650a6d2179b https://doi.org/10.1680/jgein.21.00052 Zobrazit plný text záznamu