- 期刊
FINITE ELEMENT ANALYSES OF GEOSYNTHETIC-REINFORCED SOIL GROUND UNDER SURCHARGE AND PROBABILISTIC ESTIMATION OF THE BEARING CAPACITY
摘要
The soft stratum has always been a concern for embankment and pavement loadings. A widely accepted method to cope with this problem is to use geosynthetics materials to reinforce the soft ground. The effect of geosynthetics on the deformation characteristics of the reinforced soil layer, especially under a probabilistic framework, is of interest in this study. In this paper, the finite element analysis was performed to identify the effect of key parameters, including soil properties, geosynthetics material properties, depth and spacing of geosynthetics installation, on the surcharge-deformation characteristics of geosynthetic reinforced soft ground. It is found that the application of stronger soil and geosynthetic material can reduce the probability of weak geosynthetic reinforced foundation fails to meet the prerequisite settlement tolerance while the most important design parameter is the better interaction between soil and geosynthetics. A series of numerical analyses of deformation of geosynthetics reinforced soft ground were conducted. The analysis results were inventoried and regressed to establish a performance model in the form of second-order model (SOM) equation. With the incorporation of developed simplified SOM equation and Monte-Carlo simulation, the bearing capacity under certain soil and geosynthetic material properties for specified deformation criterion can be estimated.
延伸閱讀
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