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Ocean platform piling bubble curtain noise reduction amount calculation and analysis method

An offshore platform and analysis method technology, applied in the direction of calculation, computer-aided design, design optimization/simulation, etc., can solve the problem of lack of practical analysis methods for noise reduction effect, and achieve long cycle, narrow applicability and high measurement cost. Effect

Pending Publication Date: 2022-06-17
OFFSHORE OIL ENG
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  • Application Information

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Problems solved by technology

In the past, bubble curtains were used in ship drag reduction and concealment design, but there was no practical analysis method for its noise reduction effect

Method used

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  • Ocean platform piling bubble curtain noise reduction amount calculation and analysis method
  • Ocean platform piling bubble curtain noise reduction amount calculation and analysis method
  • Ocean platform piling bubble curtain noise reduction amount calculation and analysis method

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Embodiment Construction

[0046] The present invention is further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0047] example, as Figure 1-9 As shown in the figure, the present invention discloses a method for calculating and analyzing the noise reduction of an offshore platform piling bubble curtain. The specific implementation of each step is as follows:

[0048] S1. Using the calculation formula of the sound insulation of the air curtain layer under the incidence of normal sound waves, in the case of a given target noise reduction, analyze the influence of various parameters of the air curtain on the noise reduction, and at the same time according to the noise reduction and the application place. limit, determine parameter settings;

[0049] When the sound wave passes through the air curtain la...

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Abstract

The invention discloses an ocean platform piling bubble curtain noise reduction amount calculation and analysis method. Comprising three calculation methods, namely an air curtain layer noise reduction amount calculation method under normal sound wave incidence, an underwater air curtain bubble curtain low-frequency finite element fluid-solid coupling analysis calculation method and a full-band acoustic analysis calculation method based on a statistical energy analysis method. The influence of various parameters of the air curtain on the noise reduction amount and the noise reduction amount of the bubble curtain under low frequency and high frequency are quantitatively calculated, and the problems that in the prior art, a mode of measuring noise distribution through a detection device with a certain distance from a piling noise source is large in data acquisition difficulty, high in measurement cost, long in period, narrow in applicability and the like are solved. Meanwhile, the quantitative calculation method can also be used for guiding optimization design and analysis of a bubble curtain noise reduction system.

Description

technical field [0001] The invention relates to a calculation and analysis method for the noise reduction of an offshore platform piling bubble curtain. Background technique [0002] In recent years, large marine animal stranding events have repeatedly occurred, confirming that underwater noise endangers the survival and reproduction of marine animals, and reminds humans to take seriously the threat of noise pollution in the marine environment. At present, the most commonly used foundation type for offshore engineering structures at home and abroad is the jacket-type steel structure foundation. Most of these foundations need piling construction, and the steel pipe piles are inserted into the seabed to carry the load by hitting with a piling hammer. The piling hammer energy is transmitted in the water in the form of sound waves, resulting in noise pollution, which has a serious impact on the animals living in this sea area. In order to protect marine life such as dolphins a...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F113/08G06F119/10G06F119/14
CPCG06F30/28G06F2113/08G06F2119/14G06F2119/10Y02T90/00
Inventor 李巍储乐平李潇孟凡昌赵瑞云刘松马骏王延林范学君张家珍吕春晓于真真
Owner OFFSHORE OIL ENG
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