Centrifugal model tests on geotextile-reinforced heightening projects of soil embankments

LI Xiaolin; ZHANG Ga

doi:10.11779/CJGE2024S10004

Volume 46 Issue S1

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Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 112-116. > DOI: 10.11779/CJGE2024S10004

LI Xiaolin, ZHANG Ga. Centrifugal model tests on geotextile-reinforced heightening projects of soil embankments[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 112-116. DOI: 10.11779/CJGE2024S10004

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Centrifugal model tests on geotextile-reinforced heightening projects of soil embankments

Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China

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Received Date: April 28, 2024

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Abstract

Abstract

Geotextiles are widely used to reinforce slopes, but they have not yet been effectively applied in heightening projects of soil embankments. The centrifugal model tests are conducted on the elevated soil embankments with geotextile reinforcement under variation of water level. The deformation and failure process of the reinforced embankment are observed and measured. The results indicate that the failure of the elevated soil embankments with geotextile reinforcement exhibits different characteristics between the new and old embankments. The ultimate failure of the elevated embankment is caused by the coupling and progressive development of deformation localization and local failure. The geotextiles are divided into reinforcement section and restraint section. In the restraint section, the embankment provides restraint for the geotextiles, while in the reinforcement section, the geotextiles limit the deformation of the embankment. The reinforcement mechanism of the geotextiles is to transfer the restraint from the deep part of the embankment to its surface, thereby to increase the sliding resistance of the shallow layer of the embankment.
- embankment,
- heightening,
- geotextile,
- centrifugal model test,
- variation of water level

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