Seawall top structure and arrangement method

The invention relates to the technical field of seawall structures, and discloses a seawall top structure and an arrangement method.The seawall top structure comprises a seawall top road, an upstream side wave wall and a downstream side wave wall, the seawall top road is located at the top of a seawall, and the upstream side wave wall and the downstream side wave wall are arranged on the upstream side and the downstream side of the top of the seawall correspondingly and connected with the seawall top road; a plurality of wave discharging openings are formed in the upstream side wave wall at intervals in the length direction of the dike, the wave discharging openings are in a horn shape, small openings face the upstream side, and large openings face the backwater side. And the part, close to the upstream side wave wall, of the top surface of the embankment crest road is lower than the part, close to the downstream side wave wall, of the top surface of the embankment crest road and is in a gentle slope shape. T