Experimental study on open room soil and impaction compaction method for poor weak subgrade treatment

Taking some test engineering of soft ground for example, this paper introduces the design thinking of cement powder-spray pile treating weak subgrade and the observation way of settlement in layers, analyses the experimental results, and thinks that there are good results.

Through comparison and selection test of tamping energy and cushion thickness,research on correlations and their optimizations of parameters and the relation between tamping energy,cushion thickness and cumulative settlement of dynamic compaction,it was practicable to treat weak subgrade with column-hammer thrusted-expanged piles.

Study on technique of low-energy dynamic consolidation method combined with dewatering used to treat soft roadbed;

Connecting with the construction practice of the treatment of the soft roadbed in reconstruction project of Yunfeng Superhighway, this paper sums up several measures for the treatment of the soft collapsible loess roadbed.

According to the scheme selection of bad subgrade construction,the optimization model is constructed.

The main idea of this article is to introduce the application of the grouting pile in the course of consolidating uneven soft groundwork of the 2 # steam turbine generator of Pingshi B Electrical Factory in Guangdong province.