The practice of fabricating a pile by drilling and filling pedestal is described in the discussion.

Based on the affirmation to the technology properties of artificial excavated pile, especially according to the merit of peculiar residual soil containing solitary stone granite, the author mainly expatiated appropriate pedestal, reasonable reinforcement, simpilifying foundation pile-cap design under the column to bring about economic profit on the basis of safe conduct.

Experimental research and analysis of cast-in-place piles with expanded-base and post-grouting;

The cast-in-situ pile with expanded-base and post-pressure grouting is a new type of pile foundation developed from normal cast-in-site pile, in which the construction techniques of expanded-base and post-pressure grouting are combined.

Comparisons of hydraulic natures such as flow pattern,pressure fluctuation,cavitation, and vibration between two kinds of culvert shape behind valve,top expansion and bottom sudden expansion,are carried out in this paper.

The pile strain of AM bulb cast-in-place pile is tested by high precision sliding micrometer,which can have high precision and reliable testing results.

3D finite element models of belled pier in the homogeneous stratum with different elastic modulus of soils,angle of internal friction and cohesion force.

In order to analyze the vertical bearing behavior of belled pier embedded in coarse sand at the depth of 14.

In order to analyze the bearing mechanism of belled pier with different dimensions,by three-dimensional finite element,a contact model of pier and soil was established.