Acoustic image technology of the inside inspection of concrete structure devoid of substance and pouring concrete into formwork

空心混凝土结构内部检测及模板浇筑声像技术

• 批准号: 23241050
• 负责人: ASADA Akira
• 金额: $ 26.46万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23241050/
• 关键词: パラメトリックソーナー; 港湾岸壁; ピエゾコンポジット; フォーカスアレイ; フレネルレンズ; 空洞化; コンクリート構造物; 劣化診断; フォーカスプローブ; 音響診断; コンクリート打設; 音響パラメトリック

A lot of accident examples that the collapse of the harbor quay or top surfacecave-in brought about have been reported by aged deterioration.Therefore, the parametric sonar system which diagnosed the quay inside has been developed. We designed the new transducer by the piezocomposite manufacturing method to improve the secondary wave generation efficiency of the parametric sonar and power amp, the transmission and reception control system. For parametric sonar SES2000 of sub-bottom profiler, the Fresnel lens which could focus it in a short distance was designed and produced. We equipped SES2000 with the lens and evaluated it with a quay and a water tank and examined it and got a good measurement result. New technique to measure a shape of the quay surface with an acoustic video camera precisely was developed also.

由于老化劣化导致港口码头坍塌或顶面塌陷等事故的报道很多，因此， 里面的码头已经开发出来了。为了提高参量声纳和功放发射接收控制系统的二次波产生效率，采用压电复合材料制造方法设计了新型换能器。针对海底剖面仪参数声纳SES 2000，设计并制作了能在近距离聚焦的菲涅耳透镜。我们在SES 2000上安装了透镜，并在码头和水箱上进行了测试，得到了很好的测量结果 结果.还开发了用声学摄像机精确测量码头表面形状的新技术。

项目成果

コンクリート構造物の空洞化探査

混凝土结构空心探测

• 发表时间: 2011
• 期刊: 非破壊検査
• 作者: Chongshen Guo;Shu Yin;Tsugio Sato;浅田昭,秋元和實,国島英樹
• 通讯作者: 浅田昭,秋元和實,国島英樹

Inerferometric sonar with synthetic aperture technique for AUV

AUV 合成孔径干涉测量声纳

• 发表时间: 2012
• 作者: 堀内康平;増田開晴;南 康夫;片山郁文;武田 淳;Akira ASADA
• 通讯作者: Akira ASADA

Diagnostic evaluation of quay wal using three-dimensional acoustic measurementsystems

使用三维声学测量系统对码头进行诊断评估

• 发表时间: 2013
• 期刊: Proc. of International Symposium on Underwate Technology 2013 (UT13)
• 作者: K. Abukawa;A. Asada;K. Mizuno;T. Igarashi;N. Kishi;K. Akimoto
• 通讯作者: K. Akimoto

Quantification of whooper swan damage to lotus habitats using high-resolution acoustic imaging sonar in Lake Izunuma, Japan

使用高分辨率声学成像声纳对日本伊豆沼湖大天鹅对莲花栖息地的损害进行量化

• 发表时间: 2013
• 期刊: Aquatic Botany
• 影响因子: 1.8
• 作者: K.Mizuno;K.Abukawa;T. Kahima;A.Akira;Y.Fujimoto and T.Shimada
• 通讯作者: Y.Fujimoto and T.Shimada

Hard rock coring on steep terrain

在陡峭地形上进行硬岩取芯

• 发表时间: 2012
• 期刊: Underwater Intervention 2012
• 作者: Tomoya Inoue;Akira Asada;Tokuihiro Katsui;Masashi Mochizuki;Hiroyuki Osawa;Ken Takagi
• 通讯作者: Ken Takagi