加筋边坡筋材拉力分布规律参数分析

PARAMETER ANALYSIS ON DISTRIBUTION LAW OF REINFORCEMENT LOADS WITHIN REINFORCED SLOPES

筋材拉力沿坡高的分布规律决定了筋材参数的选取,因而有必要对其进行参数分析。采用Plaxis有限元软件建立加筋边坡数值模型,分析填土摩擦角、剪胀角、坡高、坡度等参数对加筋边坡筋材拉力分布的影响。结果表明,填土摩擦角和坡度对加筋边坡筋材拉力分布有较大影响,随着填土摩擦角的减小或者坡度的增大,筋材最大拉力的位置由边坡中部向边坡底部移动。

The selection of parameters of reinforcements is determined by reinforcement loads distribution with slope height. Thus, the parameter analysis on reinforcement loads distribution in reinforced slopes is necessary. The finite element software, Plaxis, was used to construct the numerical model of reinforced slope. The influence of the parameters, such as soil friction angle, dilation angle, slope height and slope angle, on reinforcement loads distribution wasanalyzed. The results show that the backfill friction angel and the slope angle have an effect on reinforcement loads distribution in reinforced slopes. With the decrease of backfill friction angel or the increase of slope angle, the location of maximum reinforcement load transfers from the middle part to the bottom part of slope.