Use of geocomposite drain against rapid-drawdown loading for roller-compacted concrete (RCC) armored earth dam

Autor:	L.G. Bromwell, A.T. Özer
Rok vydání:	2011
Předmět:	Roller-compacted concrete Factor of safety Pore water pressure Geocomposite Geotechnical engineering Geosynthetics urologic and male genital diseases Geotechnical Engineering and Engineering Geology female genital diseases and pregnancy complications Geology Civil and Structural Engineering
Zdroj:	Geosynthetics International. 18:207-220
ISSN:	1751-7613 1072-6349
DOI:	10.1680/gein.2011.18.5.207
Popis:	ABSTRACT: This case study describes the design and construction of a drainage system consisting of a geocomposite drain immediately beneath the roller-compacted concrete (RCC) slope facing at the Loxahatchee Reservoir in western Palm Beach County, Florida. 1.5 kilometers of RCC and geocomposite drain were installed along the western alignment of Cell 6. The main stability issue for the RCC was the development of excessive pore water pressure beneath the RCC in the event of rapid drawdown of the reservoir. Transient seepage analysis showed that installation of the geocomposite drain eliminated excess pore pressure beneath the RCC and dramatically increased the factor of safety against uplift, preventing structural instability of the RCC. Under the operational reservoir levels since placing the reservoir in operation, no structural instability has been observed in the RCC, which was also confirmed by post-construction transient seepage analysis. Performance of the geocomposite drain has successfully met the design objectives.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e41d72ddee095ca544c712961fe8141 https://doi.org/10.1680/gein.2011.18.5.207 Zobrazit plný text záznamu