Pile foundation permeable breakwater with variable permeability and construction method thereof

A construction method of the pile foundation permeable breakwater with variable permeability, comprising the following steps:

• 1) driving the prefabricated pile foundations (7) into a seabed of a construction region;
• 2) pouring the pile caps (6) on the top at a low water level to avoid tilting pile bodies during construction;
• 3) installing the top and bottom sliding rails (9) at the low water level;
• 4) installing the movable wave breaking plates (8) and the fixed wave breaking plates (11) at the low water level;
• 5) installing the baffle plate (10) between the pile caps (6) at the low water level,
• 6) installing the prefabricated cross beam (4) and the longitudinal beam (5) on the top of the baffle plate (10) at the low water level,
• 7) fixing the prefabricated panel (3) to the cross beam (4) and the longitudinal beam (5);
• 8) installing the control system on the prefabricated panel (3);
• 9) pouring the wave wall (1) and the breast wall (2);
• 10) backfilling the medium-coarse sand between the wave wall (1) and the breast wall (2), and attaching the concrete surface layer (12).