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摘要:
Loess, with penetrability, collapsibility, slaking, is uniform in grain and high in porosity and low in moisture content. In the northwest China, geological calamities, such as soil erosion, slope slide, debris flow and landslip, etc, frequently occur in the loess area in the condition of large rainfall, which may brings tremendous loss and damage to highway. Geosynthetics is an effective method to the solution of these problems. The construction process of loess reinforcement embankment is modeled using FLAC. Based on uniaxial compression test and dynamic modulus input technique with programmable FISH, the compact quality of loess can well be depicted. A reinforcing expressway embankment in Ningxia is modeled using this method, and the results are close to the field data. At the same time, the internal force distribution in geogrid is analyzed, and reinforcing effect is appraised. These results may help promote the application of geosynthetics in loess embankment.
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