Study on strength and deformation behavior of loess slope supported by micropiles

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Abstract

Based on the practice of application of micropiles in slope support engineering and a largescale field experiment, some factors influencing the reinforcing effect of micropiles in stepshaped slope were studied with FLAC software, using finite difference method. Firstly, referring to the scale of the large-scale field experiment, a numerical model was established and calculations were performed to study the effect of slope angle, slope height and load position on the slip surface in order to determine the location of slip surface based on the loads applied on the top of the slope. Then, micropiles were arranged on the step-shaped slope based on the critical slip surface, and the ultimate bearing capacities of the slope with or without micropiles and with different numbers of micropiles were calculated, and the failure modes of step-shaped slope were analyzed. The reinforcing effect of micropiles with the variation of soil cohesion and internal friction angle was also studied.

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Tian, C., Liao, H., Peng, Y., Hao, D., & Peng, J. (2014). Study on strength and deformation behavior of loess slope supported by micropiles. In Landslide Science for a Safer Geoenvironment (Vol. 1, pp. 467–472). Springer International Publishing. https://doi.org/10.1007/978-3-319-04999-1_65

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