Because large construction ships cannot enter the shallow sea

traditional configuration foundations

such as gravity-type foundation and pile foundation

are not suited for offshore wind power project in shallow seas. Therefore

a new type of foundation—segmentally-tapered bucket foundation is proposed. Based on the limit equilibrium method

a systematic method is proposed to calculate the horizontal bearing capacity of the segmentally-tapered bucket foundation. The influences of obliquity of wall

foundation height

top diameter of bucket and soil parameters on the horizontal bearing capacity of the segmentally-tapered bucket foundation are analyzed. It is found that the horizontal bearing capacity increases with the increase of the wall obliquity

soil resistance

top diameter of bucket and foundation height

while decreases with the increase of the depth of seabed. Based on the concept of volume compression ratio

the bucket foundation with inclined upper section wall and vertical lower section wall is recommended and demonstrated. An accurate method is proposed to determine the proportional coefficient of soil resistance. The results are helpful in the optimization design of traditional bucket foundation.