注浆加固深基坑结构变形模型试验研究

Structure Deformation Model Tests on Grouting Strengthening Deep Foundation Excavation

通过模型试验,模拟深基坑的开挖过程,研究随着开挖深度的增加,基坑壁变形与时间的关系,以及不同深度水平位移注浆前后的差别,分析注浆对土介质的物理力学性能的改善和试验中所表现的加固效果,表明注浆可以增加土介质的自立高度,提高基坑边坡的稳定性和安全系数。

Based on the model test,the excavation process of deep foundation excavation is simulated,the relationship of excavation wall deformation with time,and the horizontal displacement before and after grouting under different depth are researched,by the analysis of physical and mechanical properties improvement of soil and the strengthening effect with grouting,the results show that the grouting can increase the self-standing height of soil and improve the safety of foundation excavation slope.