Steel sheet pile cofferdam capable of resisting typhoon

The utility model provides a steel sheet pile cofferdam capable of resisting typhoons. The steel sheet pile cofferdam comprises a plurality of steel pile casings, and steel pile casing connecting systems are arranged among the steel pile casings on the periphery. The outer side of the steel casing is closed by steel sheet piles to form a cofferdam main body, a plurality of layers of supporting structures are arranged in the cofferdam main body, and bottom sealing concrete is poured at the bottom of the cofferdam main body; the supporting structure comprises a ring beam arranged along the inner side of the cofferdam body, and inner supports are arranged on the inner side of the ring beam. According to the steel sheet pile cofferdam, the steel pile casings and the inner supports are connected through the holding devices, and the steel pile casing connecting system is arranged between the steel pile casings on the outermost side, so that the inner supports, the steel sheet piles and the steel pile casings form a