A Research on the Structural Dynamics due to Short-Period Surface Waves

短周期面波结构动力学研究

• 批准号: 10650468
• 负责人: KAMIYAMA Makoto
• 金额: $ 1.6万
• 依托单位: Tohoku Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650468/
• 关键词: Surface Waves; Short-Period; Love Wave; Rayleigh Wave; Irregular Ground; strair; Pseudo-spectral Method; Array Strong-Motion Records; ラブ波; 応力; 疑似スペクトル法

Some computer programs were developed to analyze the earthquake responses of horizontally irregular grounds and their corresponding earthquake damage mechanism using the "Pseudo-Spectral Method." These programs include several new methods: it can analyze seismic responses separately for SH wave and P-SV waves; it can effectively absorb artificially-generated waves at the analytical boundaries; and it can capture clearly the process in which the short-period surface waves are secondarily generated due to horizontally irregular grounds. In addition, we developed a new technique by which the generation processes of short-period surface waves can be visually and dynamically expressed on the display of computers. This technique enables us to interpret detailed propagation mechanism of short-period surface waves. We also analyzed array strong-motion records to estimate strains and stresses related with short-period surface waves. This analysis made it clear that short-period surface waves produce large strains leading to earthquake damage of various kinds of structures such as buried life-line structures. Finally we published a report to compile the above outcomes derived by this research project.

利用拟谱法编制了水平不规则场地地震反应分析程序，并对相应的震害机理进行了分析。这些程序包括几种新的方法：它可以分别分析SH波和P-SV波的地震反应;它可以有效地吸收分析边界处的人工生成波;它可以清楚地捕捉由于水平不规则地面而产生的短周期面波的二次生成过程。此外，我们还开发了一种新的技术，通过这种技术，短周期表面波的生成过程可以在计算机显示器上直观地动态地表达出来。该技术使我们能够解释详细的短周期表面波的传播机制。我们还分析了阵列强震记录，以估计应变和应力与短周期面波。分析表明，短周期面波产生的大应变会导致埋地生命线等各种结构的地震破坏。最后，我们发表了一份报告，以汇编本研究项目得出的上述结果。

项目成果

M. Kamiyama and T. Satoh: "Seismic Effects of laterally inhomogeneous grand in terms of strain and stress"Proceedings of the 2nd International Symposium on the Effects of surface geology on Seismic motion. Vol.1. 1179-1184 (1998)

M. Kamiyama 和 T. Satoh：“横向不均匀大地震对应变和应力的影响”第二届地表地质对地震运动影响国际研讨会论文集。

M.Kamiyama,T.Matsukawa & M.Yoshida: "Non-stationary variation of soil rigidity ofserved during the 1995 Hyogoken Nanbu Earthquake" Proceedings of the 10th Japan Earthquake Engineering Symposium. Vol.1. 1193-1198 (1998)

神山M·松川

M.Kamiyama, T.Matsukawa and M.Yoshida: "Non-stationary variation of soil rigidity observed during the 1995 Hyogoken Nanbu Earthquake"Proceedings of the 10th Japan Earthquake Engineering Symposium,. Vol.1. 1193-1198 (1998)

M.Kamiyama、T.Matsukawa 和 M.Yoshida：“1995 年兵库县南部地震期间观察到的土壤刚性的非平稳变化”第 10 届日本地震工程学会论文集。

松川忠司・神山眞: "地盤における微動の鉛直アレー観測とその考案" 第11回日本地震工学シンポジウム論文集. Vol.1. 1263-1268 (1998)

Tadashi Matsukawa 和 Makoto Kamiyama：“地面微震的垂直阵列观测及其设计”第 11 届日本地震工程学会论文集，第 1 卷，1263-1268（1998 年）。

M. Kamiyama, T. Matsukawa and M. Yoshida: "Dynamic variation of soil rigidity based on downhole array observation"Proceedings of the 12th world conference on Earthquake Engineering. Vol.CD-ROM. 1-8 (2000)

M. Kamiyama、T. Matsukawa 和 M. Yoshida：“基于井下阵列观测的土壤刚度动态变化”第十二届世界地震工程学会论文集。