| Summary: | 碩士 === 國立暨南國際大學 === 土木工程學系 === 96 === The reinforced soil has widely used on geotechnical engineering like walls, dams, abutments, and road base etc. This study used large-scale plane strain test device that can represent stress-strain behavior of soil and reinforcement in the field to simulate reinforced behavior of soil of road base. This test used three soil materials (sand of Taichung port, gravel, and laterite) ,two different strength PET geogrids and one of geotestile. Use two different loads static state and dynamic state (cyclic load) to proceed a series of reinforced soil tests. The tests also added to strain gauges to measure the local strain of geogrids and compared with global strain of geogrids. Finally, influences of the different factors of reinforced soil were discussed, and obtain modulus to supply numerical analysis in the future. The results shows that the strength of reinforced soil would be increased by types and reinforced depth of geosynthetics in dynamic or static tests.
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