Bragg resonance breakwater design method and breakwater

By optimizing the geometric and arrangement parameters of the resonant units in the Bragg resonant breakwater, the problem of insufficient defense capability of traditional Bragg breakwaters against low-frequency, broadband long waves is solved, and an effective wave dissipation effect is achieved in complex sea conditions.

CN122174316APending Publication Date: 2026-06-09JIANGSU UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610249699.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-03
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing Bragg resonant breakwaters are insufficient in defending against low-frequency, broadband long waves under complex sea conditions. Traditional designs struggle to cover the broadband incident wave spectrum, resulting in a sharp decline in reflection effectiveness.

Method used

A Bragg resonance breakwater method is designed. By acquiring the wave field characteristic parameters of the target sea area, the target wave frequency band is determined. Based on the frequency band, the geometric parameters and arrangement parameters of the resonant unit are matched to form a gradually changing resonant cavity structure. The reflection coefficient index is optimized to expand the effective reflection and dissipation frequency band.

Benefits of technology

It improves the breakwater's defense capabilities under complex sea conditions, expands its wave-dissipating effect on broadband waves, reduces its dependence on fixed-period narrowband resonance, and ensures the stability of reflection effects when deviating from the design frequency.

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Abstract

The invention provides a Bragg resonance breakwater design method and breakway.The Bragg resonance breakwater design method comprises the steps that wave field characteristic parameters of a target sea area are obtained, and a target wave frequency band is determined according to the wave field characteristic parameters; determining a target wave frequency of each resonance unit based on the target wave frequency band, and determining geometric parameters of a resonant cavity of the resonance unit according to the target wave frequency, so that the natural resonant frequency of the resonant cavity is matched with the target wave frequency; a reflection coefficient index used for representing the wave dissipation effect is determined based on the target wave frequency band, on the premise that preset constraint conditions are met, arrangement parameters of all the resonance units are determined according to the reflection coefficient index, and the arrangement parameters change step by step in the incident wave propagation direction; and outputting the resonant cavity geometric parameters and the arrangement parameters corresponding to the resonance units to form a design scheme of the Bragg resonance breakwater.
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