Study On Analytical And Computational Methods Of Pile Engineering And Anchorage Engineering

As compression piles , tension piles and bolts share similar topological characteristics in their mechanical model, they may have similar mechanical behaviours and analysis methods. However, theories on them have developed independently and seldom has research been done to make comparison among them.In this paper, comparison study has been conducted and it is found that load-transfer method widely used for compression pile analysis is suitable to tension piles and bolts. It is also found that some theory for bolts is applicable to compression piles.As more and more highrise buildings are built in China, pile groups are usually used to support the superstructure. The analysis of such foundation is very complicated as it involves the interaction of pile group, foundation and superstructure. A lot of scholars have dedicated to methods for interaction analysis and many theoretical methods have been developed. However, such theoretical methods are seldom adopted in design work, as they often need heavy programming work. Thus, for design purpose more practical method is necessitated.In this paper, a practical interaction method, which is based on interaction function characterized with few programming work, is presented. Corresponding to aforesaid method, the practical program named PRAPP (Piled Raft Anaylis Practical Program) is developed.Based on PRAPP, the apparent single pile stiffness exhibited in pile group, which is crutial in simplified interaction analysis, is studied. The effect of cushion on rigid composite foundation is also studied.