Taiwan, and my colleagues schooling. Old pile is influenced by both the matter, though not in Shanghai, in order to advance answer work in Shanghai professional point of view to support staff wide hair negotiable.
1, any area, all for multi-layer formation. But Shanghai is thick layer of water content of silt soil than liquid limit is the fact that does not dispute. This problem wants Shanghai colleague posted on the standard profile to solution formation for beautiful. The thirsty Each layer are bearing, the same layer with different different depth bearing, so no more bearing layer that fixed buried depth;
2, deep foundation pit excavation 10M, underground continuous wall combined with the practice of support within the width, the premise is the foundation pit is not big, usually less than 20M to edge, soil pressure load, have corresponding supporting conditions within. If the width o...