Then carried out static pile foundation construction,meanwhile put up pump aggregate mortar injecti.

The basic principle of pilot stake under high reacting motive force is introduced in this article,while analyzing the variation of the stake weight and the bearing capacity of the base stake under the disadvantageous influence of the earthsqueezing effects,by the application of the technology of high reacting motive force on a project of stake base under static pressure.

With more and more super-length concrete structure buildings with the pile foundation have been constructed, the temperature stress of super-length concrete structure has become one of vitally important research topics in structure design This paper elaborates the reason of cracking, and the related theory of pile lateral direction stiffness.

Safety control on pile foundations;

The reliability of the vertical capacity of the pile foundations of platforms is analyzed.

Therefore it is necessary to carry out rational reliability analysis on pile foundations of platforms and develop the Load and Resistance Factor Design (LRFD) that is su.

Improvement of design method for pile raft foundation and its economical significance;

In order to study the interaction of upper structure,pile raft foundation and soil,a modle of three dimensional finite element analysis is established.

The paper has a study on properties of pile raft foundation for high buildings based on test.