气泡帷幕对打桩噪声的影响研究  

Influence of bubble curtain on pile driving noise

作　　者：高誉宁 马骏[1] 丁悦 GAO Yu-ning;MA Jun;DING Yue(School of Naval Engineering,Dalian University of Technology,Dalian 116000,China;Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116000,China)

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116000 [2]大连理工大学建设工程学部,辽宁大连116000

出　　处：《船舶力学》2023年第2期302-310,共9页Journal of Ship Mechanics

摘　　要：在海洋工程作业基础桩安装固定过程中,打桩噪声会对海洋哺乳动物听觉系统造成伤害,为保护海洋生态环境,采用气泡帷幕降低打桩噪声。首先将Keller气泡振动模型应用到气泡帷幕模型中,推导气泡帷幕的声学参数,然后采用有限元分析软件进行数值模拟,研究气泡帷幕对打桩噪声的衰减作用,讨论气泡帷幕位置、厚度和空气体积分数对降噪效果的影响。研究发现,空气体积分数对衰减效果有较大影响,在工程实际中,可通过增大空气体积分数来提高气泡帷幕对噪声的衰减作用。During installation of jackets in offshore engineering operation, the noise of piling will cause harm to the hearing system of marine mammals. In order to protect the marine ecological environment, the bubble curtain was used to reduce the noise of piling. The Keller bubble vibration model was applied to the bubble curtain model to obtain the acoustic parameters of the bubble curtain. The finite element analysis software was used for numerical simulation to study the attenuation effect of the bubble curtain on the pile driving noise of the offshore platform. The effects of bubble curtain position, thickness and air volume fraction on noise reduction were discussed.It is found that the air volume fraction has a great influence on the attenuation effect. In engineering practice, the noise attenuation efficiency of bubble curtain can be improved by increasing the air volume fraction.

关 键 词：打桩噪声 海洋环境 气泡帷幕 降噪 

分 类 号：O427.5[理学—声学]