1. When the steel mesh skeleton polyethylene composite pipe is connected to the pile, it should be noted that the axis of the new pile joint is consistent with the original pile joint, and the soil, oil, rust, etc. on the pile joint should be cleaned in advance.
2. When the upper and lower sections of the steel mesh skeleton polyethylene composite pipe are spliced into a whole pile, the end plate welding connection or mechanical joint connection should be used, and the joint connection strength should not be less than the strength of the pipe pile body.
3. During pile extension, the pile head of the buried part of the steel mesh skeleton polyethylene composite pipe should be 0.5m-1.0m higher than the ground.
4. The guide hoop should be set at the pile head of the lower section pile of the steel mesh skeleton polyethylene composite pipe to facilitate the positioning of the upper section pile. During pile extension, the upper and lower pile segments shall be kept straight, and the displacement deviation shall not be greater than 2mm.