基于三维数值模拟反分析的临危边坡锚固研究

Anchorage scheme against imminent failure of slope based on 3-D numerical modeling back analysis

依据实际工程边坡案例,研究利用施工监测资料联合有限元强度折减法三维数值模拟确定临危边坡锚固方案的方法。研究表明,三维数值模拟对于非规则断面坡体的变形分析更具有针对性,可以考虑坡体断面形态变化对坡体变形的影响,计算结果与实际变形状态吻合度高,依据监测数据通过三维数值模拟反分析可以得到符合现场条件的边坡状态参数和计算模型,据此确定的边坡锚固参数更具有科学性。

An anchorage scheme against the imminent failure of slope has been researched using construction monitoring data and 3-D numerical modeling based on an actual engineering slope. The research shows that 3-D numerical modeling is of more pertinence to slope deformation analysis with irregular section as it can consider the influence of changing slope section morphology on slope deformation and the results of numerical modeling agree well with the actual deformation status. According to monitoring data,the slope state parameters and calculation model which satisfies with field conditions can be attained by the 3-D numerical modeling back analysis. Thus the slope anchoring parameters based on above are more scientific.