Application of I shaped steel micro pile in the Accident of Shelter Collapse;

This article focuses on the design principle,working process and know-how of the stiffening pile.

The effect factors on the bearing capacity of reinforced mixing pile was discussed and simplified.

According to experiences of its design,field experimentation and construction,this paper discusses the failure mode of the reinforced mixing pile,and brings forward the optimization design method of the reinforced mixing pile,which could provide a reliable basis for the design and construction of the reinforced mixing .

By analyzing the stress and deformation of the reinforced mixing pile with different concrete core pile length and area replacing ratio in soft soil, it is expressed that the core pile shaft friction undertakes the mass of vertical load of the pile and a little of it can transmit to pile top, it is also founded that an optimum core pile length and an area replacing ratio of the reinforced mixi.

Static and dynamic analysis of bearing capacity of composite foundation of concrete core mixing piles;

Study on seismic behavior of a compound foundation with concrete core mixing pile;

The concrete core mixing pile is a new soil improvement method.

Laboratory Test on the Lateral Earth Pressure and Influenced Zone of Retaining Structure with Stiffened Piles;

Application of micropiles with anti-bending function to retaining and protection of foundation excavation;

Combing with project examples of foundation pit support,the application of micropile in SMW method is introduced from the aspects of the scheme choice of foundation pit support,the design theory of retaining structure,the info-construction course,and so on.

The displacement and internal force of micropile is analysed through building a pile and soil contact effect,and combining with the analytical result of calculation theory.