By studying the data of pile test of a certain engineering,this paper probes into the features of bearing capacity of squeezed branch pile and its economic benefit,compares the squeezed branch pile and cast-in-place pile under the same bearing capacity,and discusses the featurews of squeezed branch pile.

And the results show that soil parameters affect the bearing capacity of squeezed branch pile significantly.

The extraction-resistant behaviors of squeezed branch piles are analyzed with large FEM software ABAQUS and compared to the compression-resistant behaviors.

Experimental research on the interaction between piles with branches and plates and surrounding soil;

Test of model piles with branches and plates in unsaturated silty clay;

The construction of squeezed branch pile has one process step more than the construction of ordinary drilled pile.

Based on the ANSYS software,the three dimensional finite element model of piles with branch plate and soil was built,the contact analysis on the interaction of pile and soil was made,variation laws of displacement field,stress field and interaction of pile and soil for the piles with branch plate was studied under the action of loading.

This disquisition introduces the background and the configuration of the piles with branch plate in the beginning,analysing its pile-made mechanism、 research status、mechanism of stress and failure,as well as its advantages and practical prospects.

Considering that disk piles possess markedly resistance to compression, extraction and torsion,it is put forward that straight piles can be substituted by disk piles to form a disk pile-soil-superstructure system.

But as a new technology, the system and sophisticated theory about the disk pile has not been formed, which restricts the widely use of it.

Pile with branches and plates sufficiently increases the bearing of the two plates, and the load at the end of the pile is small, so the total bearing capacity of the pile with branches and plates could be advanced.