Energy-saving green constructional engineering pile

In order to achieve the purpose, the following technical scheme is provided: the energy-saving green constructional engineering pile comprises a pile frame, the inner wall of the pile frame is provided with a sliding groove I and a hole groove, a screw rod is movably arranged in an inner cavity of the pile frame, the upper end of the screw rod is fixedly connected with a rotating block, the screw rod is in threaded connection with a movable block, and the movable block moves up and down on the screw rod; a fixing block is movably arranged in the pile frame, a steel nail is fixedly connected to the fixing block, the steel nail moves in the hole groove, the rotating block is rotated to drive the lead screw to rotate in the pile frame, the lead screw rotates to drive the movable block to move downwards, the movable block moves downwards to push the fixing block to move outwards, and then the steel nail is driven to move outwards in the hole groove. The steel frame is embedded into soil outside the pile frame, th