倾斜软弱地基高填方机场边坡稳定性分析及治理对策研究

基于有限强度折减理论,以东北某倾斜软弱地基高填方机场边坡为背景,运用MIDAS GTS软件,开展不同综合坡率下的稳定性分析,探究以坡顶、坡脚位移场为表征的边坡破坏力学行为及滑塌机制,得出相应的安全系数以及较为合理的坡率。并针对潜在病害开展碎石桩复合地基加固技术研究,得出经济有效的桩径、桩距和桩长。

Analysis on Stability of High Fill Slope with Inclined Soft Ground along Airport and the Countermeasures

Based on the theory of finite strength reduction,this paper,by taking a high fill slope with inclined soft ground along a airport in the northeast as the background,carried out stability analysis under different comprehensive slope ratios with MIDAS GTS software in order to explore both the mechanical behavior of slope failure and the slumping mechanism,which are represented by the displacement fields on the top and at the toe,and to obtain the corresponding safety factor and proper slope ratio.Furthermore,in relation to the potential diseases,the technology for gravel pile composite foundation reinforcement was studied so as to get cost-effective diameter,spacing and length of pile.