Excavation supporting precipitation integration tubular pile dado structure

The utility model provides an excavation supporting precipitation integration tubular pile dado structure which characterized in that: including the dado stake, keeping off native board, pile cover, top supporting beam, the dado stake is that hollow steel tube structure, dado stake one side are equipped with the precipitation hole, and be connected with in the dado stake and keep off native board between the stake, dado pile bolck end connection pile cover, atress structure system is formed through pile cover top supporting beam jointly to relative dado pile bolck end. This structure can batch production reduce cost, can freely assemble, dismantle, and the existing equipment support can reuse to furthest saves the time limit for a project and practices thrift the cost, owing to dado stake, the native board of fender all can be demolishd after the construction and recycle, does not have any pollution, satisfies the environmental protection requirement, saves construction period. The construction side method is