Analysis on impact on the internal force of guard post by waling stripe rearrangement in the foundation pits;

Application of steel flower tubes spinkling anchor support in supporting pile reinforcing process;

Based on the calculation of safety factor of slope and one-dimension FEM analysis of the soldier pile, the existing retaining piles were designed to use again by using some technical measures such as soil improvement, adding some corner braces and deep slope.

The monitoring data of displacement of a foundation pit in Shanghai were introduced and analyzed in detail, in which the existing retaining piles were used again.

In the construction,SMW support piles were adopted and proved to be up to design requirement through control observation.

Based on practice in design and construction of enclosing piles for underground halls of an civil defence project in Shanghai with investigation on enclosing piles for deep foundation in Shanghai, Nanjing and others a detailed analysis on problem encountered in design and construction of enclosing piles was given.

Based on the example of an engineering work,the experience of application of fender piles for antifloating and external wall form work of underground building was introduced.

As the pile group with variant pile diameters and pile lengths differs in composition from the conventional pile group with identical single piles, the combined action of engineering piles and fender piles is most important for m.