Laboratory Experimental Analysis of Foundation Treatment Using Vortex Squeeze Expansion Mechanism
Li Chunbao, Xue Shifeng, Yu Rangang, Zhang Yanmei, Sun Xiang, Liu Xiaohui and Zhao Zhijun
DOI:10.11835/j.issn.1674-4764.2014.06.013
Received May 15, 2014,Revised , Accepted , Available online July 01, 2015
Volume ,2014,Pages 78-81
- Abstract
The advantages and disadvantages of existing methods of foundation treatment were analyzed. The “vortex squeeze expansion mechanism” was proposed and tested in the laboratory. The self-designed vortex squeeze expanding environment box and steel casing were used to implement the vortex squeeze expanding experiment. The vortex pressure blade in the steel casing can squeeze the flowing concrete into the surrounding soil medium smoothly. The expanded diameter ratio was defined. The expanded diameter ratio conditions of sandy soil and clay under different torque and the ultimate torque were presented. The concrete flow analysis model and dynamics model of concrete in the vortex pressure chamber was established based on the analysis of flow patterns that occurred during the vortex compressed concrete. The results indicate that it's feasible to use the method of vortex squeeze expansion to handle foundation, it have strong applicability. Vortex squeeze expansion mechanism will bring new vitality for the foundation treatment methods.