복합보강토의 전단강도 특성

초록

The main objective of this paper was to investigate the behavior of new composite reinforced soils. The laboratory tests and numerical analyses were performed. The composite soils studied were geotextile-reinforced soils, fiber-reinforced soils, and new composite reinforced soils that combine woven geotextile and randomly distributed discrete fibers. The laboratory tests include the compaction tests, the uniaxial and triaxial tests. The test results were presented in terms of confining stress, water contents, soil types, reinforcing materials types, and arrangement spacing of geotextile. The test results showed that the inclusion of geotextile and discrete fibers increased the strength significantly. The effectiveness of the combination of geotextile and discrete fiber was somewhat more significant. The important finding was that the inclusion of both materials in a soil can have the both strength effectiveness when each reinforced material was used separately. The numerical analyses support the test results. The reinforced wall using the new composite reinforced soil reduced the stress, deformation and failure plastic zone