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.

Introduction of strain-wave test to detect integrity of bridge pile;

Numerical Analysis of Existing Pile Due to Excavation;

It is convenient to detect bearing capacity of two super-long piles in Foshan and this method worth recommending.

An interaction factor approach and parametric analysis for piled raft foundation;

Analysis of interaction mechanism of piled raft foundation by use of simplified nonlinear model;

General analysis method of piled raft foundation under vertical loading;

In light of the technical difficulties existed in deepwater large-diameter super-long group piles foundation,the article discusses the mechanism of improving the pile end s bearing capacity by pile bottom grouting,introduces the technology,materials and construction process of pile bottom grouting,and analyzes its effect,in order to promote the application of pile bottom post-grouting technology.