Abstract
Suction foundation is a new type of foundation for offshore structures. It forms like a tea caddy. It is built by installing hollow cylindrical caisson upside-down, into sea bottom, and carrying out forcible drainage of the internal water using a pump after the inner side of foundation is sealed by the submarine side. The difference of water pressure (suction) between inner and outer side of caisson and it will use this suction force as pushing power into the ground. Using suction foundation is useful for working term and constructing cost.
This study pays attention to the characteristics of bearing capacity of the suction foundation over drawing-out, and bearing capacity formula.
