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Design and Test Methods for Geosynthetic Reinforced Structures
Lecturer and Research Associate, Institute of Geotechnical Engineering and Mine Surveying, Clausthal University of Technology, Clausthal-Zellerfeld, Germany |
Abstract
Internal stability problems of geosynthetic reinforced structures under special consideration of the interaction behaviour are presented in this paper. The interaction behaviour between soil and geosynthetic is an important key parameter in the design of geosynthetic reinforced structures. The stability of these structures relies to a large extent on the proper transference of forces from the soil in the geosynthetic and vice versa. The main mechanisms of this load transference are friction, passive earth resistance and interlock. Depending on the loading and the position of the reinforcement layers a shear- or a pull-out mechanism could evolve. Both types of mechanisms could be examined by different test methods with a huge number of parameters influencing the test results. The effects of important key parameters on the results of the pull-out test are shown based on some examples from our test program.
Keywords: Geosynthetic, test method, shear test, pull-out test, interface behaviour
