Development of a New Inflatable Controlled Anchor System and Experimental Study of pull-out Capacity

Table 1

Structural form comparison of steel strips.

Structural form	Disadvantage	Advantage	Testing result
The steel tube is divided into two equal parts longitudinally	Uneven expansion of squeezing device	The structure is simple, the processing is convenient, and the expansion is easy	Poor performance
The steel tube is divided into four equal parts longitudinally	Slightly complicated structure	The processing is convenient, the expansion of steel strips is easy. The steel strips have large contact area with the soil wall	Good anchoring performance
The steel tube is divided into six equal parts longitudinally	Difficult processing and construction	The expansion of steel strips is easy. The steel strips have large contact area with the soil wall	Complicated structure