Steel and concrete composite cofferdam convenient to retrieve

The utility model discloses a steel and concrete composite cofferdam convenient to retrieve, it includes the cofferdam main part, an operating space is enclosed into to the cofferdam main part, the cofferdam main part includes reinforced concrete wall body and the steel wall body that can dismantle the connection in vertical orientation, the reinforced concrete wall body with connect through a prestressing force connecting device between the steel wall body, the steel wall body is double -layer steel plate material structure, when relieving behind the prestressing force connecting device, thesteel wall body floats under the buoyancy of current water environment to the surface of water on. The utility model discloses among the steel and concrete composite cofferdam convenient to retrieve,reinforced concrete wall body and steel wall body connect into whole through prestressing force connecting device, and the later stage accessible is relieved and is recycled after its connection is retrieved the steel wall bod