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物质点法适用于模拟连续介质大变形,如边坡失稳全过程。在物质点法中应用强度折减法,用于边坡稳定性评价。与极限平衡法相比,二者安全系数计算值、滑动面位置结果基本一致;与有限元强度折减法相比,物质点法失稳评价标准的物理意义明确。利用物质点法大变形计算优势,评价边坡失稳后的破坏后果,通过算例说明其评价不同安全系数下的滑坡堆积形态及滑移距离的能力,尤其是评价滑坡对临近建筑物的影响程度的能力。物质点强度折减法可用于边坡稳定性评价及边坡破坏后果评价。
Material point method is suitable for simulating large deformation of continuous medium, such as the entire process of slope instability. Strength reduction method is applied to material point method to evaluate slope stability. Compared with the limit equilibrium method, the calculated results of the safety factor and the sliding surface are basically the same. Compared with the FEM strength reduction method, the physical meaning of the material point method instability evaluation standard is clear. By using the material point method to calculate the advantage of large deformation, the damage consequences after slope instability are evaluated, and the ability of evaluating landslide accumulation shape and slipping distance with different safety factors is illustrated through numerical examples. In particular, the effect of landslide on adjacent buildings is evaluated Degree of ability. Material point strength reduction method can be applied to slope stability evaluation and slope damage evaluation.