Effect of geogrid reinforcement on soft and medium dense soils |
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Authors: | Sang-Soo Jeon |
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Affiliation: | (1) Department of Geotechnical Engineering and Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Tongji University, 200092 Shanghai, China |
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Abstract: | The field tests were carried out to examine the reinforcement effect of a geogrid on various conditions of embankment height,
the number of passages of vibratory roller, the number of reinforced layer of geogrid, and soil properties. The test results
of the dynamic earth pressure indicate that the soil reinforced by geogrid is very effective to increase the stiffness of
soil, especially in soft soil. The dynamic earth pressure ratio, which is defined as the ratio of dynamic earth pressure to
self weight of soils, exponentially decreases as the embankment height increases. The dynamic earth pressure ratio increases
up to 80% for soft soils reinforced by both one layer of geogrid in place of no reinforced soils and two layers in place of
a single layer of geogrid. |
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Keywords: | dynamic earth pressure geogrid reinforced soils repetitive loading |
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