基于ABAQUS的开挖边坡应力重塑分析

Analysis of Stress Remoulding on Excavated Slope Based on ABAQUS Software

对开挖边坡施加重塑应力,能够改善土体的受力状态,起到很好的加固效果.但是,不同的加载方式,应力重塑的效果不同.为了确定最佳的加载方式,本文在ABAQUS平台上,模拟边坡开挖和重塑的过程,揭示边坡重塑时的应力变化规律及重塑加固的效果,并利用温度场的变化控制土体参数的折减,计算出一定受力状态下边坡的安全系数.通过施加不同大小和方向的重塑应力,对比其重塑结果,获取最佳的加载方式,指导施工.

Applying remoulding stress to excavated slope can improve the stress conditions of soil body,and reinforce the slope perfectly.However,different loading models lead to distinct effect of stress remodeling.To determine the best pattern of loading,the process of excavating and remoulding is simulated in this article.It reveals the variational regulation of stess of remoulding slop and the effect of reinforcement.The variation of temperature field is used to reduce the soil strength parameters and to calculate the safety factor of slope under certain stress state.By comparing the effects of different magnitudes and directions,the best loading mode is chosen to guide the construction.