A Study on Shock Load Due to Seaquake

地震冲击载荷研究

• 批准号: 11355039
• 负责人: HIGO Yasushi
• 金额: $ 9.9万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11355039/
• 关键词: Seaquake; Frequency Domain; Time Domain; Shock Load; Resonance

The Main aim of this research is the development of simulation program to evaluate the shock loads due to seaquake. In order to validate the developed program, the water tank with the compression wave generator was constructed and the experiments to measure the character of compression wave propagation of this tank were carried out. As a result, the resonance in the seismic wave field which is bounded by free surface and bottom could be observed. As the side wall of the tank vibrated caused by the vibration of compression wave generator, it was also clear that the vibration gives effect on the experimental results of the pressure in compression wave field. Furthermore, the sound velocity depends on the water temperature and this also gave the effect on the resonance frequency. These suggested that we have to develop the new measurement system when we carry out the experiments to measure the shock load due to seaquake by using of the tank. Anyway, we've obtained a lot of information, especially for experiment method, trough the research. The mechanism of seaquake will be made clear in the near future from experimental and numerical researches.

本研究的主要目的是开发模拟程序，以评估由于地震的冲击载荷。为了验证所开发的程序，搭建了带有压缩波发生器的水池，并进行了压缩波传播特性的实验研究。结果表明，在以自由面和底部为边界的地震波场中，可以观察到共振现象。由于压缩波发生器的振动会引起贮箱侧壁的振动，从而对压缩波场中压力的测量结果产生影响。此外，声速取决于水温，这也给了共振频率的影响。这表明，在利用水槽进行地震冲击载荷测量实验时，需要开发新的测量系统。总之，通过研究，我们获得了很多信息，特别是实验方法。通过实验和数值模拟的研究，我们将在不久的将来弄清楚这一机制。

项目成果

肥後 靖: "重力を考慮した水中音伝播の基礎方程式に関する一考察"関西造船協会誌. 第233号. 161-165 (2000)

Yasushi Higo：“考虑重力的水下声音传播基本方程的研究”关西造船协会杂志第233. 161-165（2000）。

KOKUBUN, K., ANDO, H., HIGO, Y. and ISHIHARA, D.: "Model Experiment of underwater Sound Radiated from VLFS"Proc. of OMAE2000. (CD-ROM). (2000)

KOKUBUN, K.、ANDO, H.、HIGO, Y. 和 ISHIHARA, D.：“VLFS 水下声音辐射模型实验”Proc。

HIGO.Y,et al.: "A Study on Compressional Wave Field in Seawater Coused by Vibrated Floating Body"Proc.of 4th Japan-Korea Jzint Workshop on Ship & Marine Hyd.. 453-459 (1999)

HIGO.Y等：“振动浮体引起的海水中压缩波场的研究”第四届日韩Jzint船舶研讨会论文集

HIG0, Y. et al.: "A Study on Compressional Wave Field in seawater Caused by Vibrated Floating Body"Proc.of ISOPE'99, Vol.I. 65-69 (1999)

HIG0，Y.等人：“振动浮体引起的海水中压缩波场的研究”Proc.of ISOPE99，Vol.I。

JANG, R.D., HIGO, Y.: "Free-Surface Wave Elevation Interacted with Compression Waves in Seawater Caused by Earthquake"Journal of The Society of Naval Architects of Japan. No.190. 81-85 (2001)

JANG, R.D., HIGO, Y.：“自由表面波高程与地震引起的海水中压缩波的相互作用”日本造船学会杂志。