EVALUATION OF PASSIVE SEISMIC HORIZONTAL-TO-VERTICAL SPECTRAL RATIO (HVSR) FOR RAPID SITE-SPECIFIC LIQUEFACTION HAZARD ASSESSMENT

被引：1

作者：

Aque, L. E. G. ^{[1
]}

Daag, A. S. ^{[1
]}

Grutas, R. N. ^{[1
]}

Abigania, M. I. T. ^{[1
]}

Dizon, M. P. ^{[1
]}

Buhay, D. J. L. ^{[1
]}

Mitiam, E. D. ^{[1
]}

Serrano, A. T. ^{[1
]}

Halasan, O. P. C. ^{[1
]}

Reyes, M. J. V. ^{[1
]}

Sochayseng, K. S. ^{[1
]}

Magnaye, A. A. T. ^{[1
]}

Amandy, A. O. ^{[1
]}

Dela Cruz, M. C. ^{[1
]}

Locaba, O. S. ^{[1
]}

Diwata, S. M. A. ^{[1
]}

Solidum, R. U., Jr. ^{[1
,3
]}

Alarcon, W. D. ^{[2
]}

Sarmiento, N. R. P. ^{[3
]}

Macaraeg, E. A., Jr. ^{[2
]}

机构：

[1] Philippine Inst Volcanol & Seismol DOST PHIVOLCS, Dept Sci & Technol, Quezon City 1101, Philippines

[2] Dept Educ DEPED, Pasig 1605, Philippines

[3] Dept Sci & Technol DOST, Taguig City 1631, Philippines

来源：

18TH ANNUAL MEETING OF THE ASIA OCEANIA GEOSCIENCES SOCIETY, AOGS 2021 | 2022年

关键词：

Liquefaction; passive seismic; HVSR; Nakamura; seismic shear strain; Philippines;

D O I：

10.1142/9789811260100_0045

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Conventional methods of quantifying liquefaction hazards involve in-situ drilling techniques however, they are invasive and destructive on the sites and costly in terms of labor, time, and money. In this study, the Horizontal-to-Vertical Spectral Ratio (HVSR) of microtremors was used. It is a passive seismic geophysical technique, and we aim to evaluate its effectiveness in assessing liquefaction hazards. An array of single-station measurements was performed within the confines of selected experimental school sites in the coastal lowlands of the Greater Metro Manila Area (GMMA), Philippines. Measured predominant periods and their relative amplitudes were obtained to calculate the seismic shear strain, gamma, of Nakamura and correlated with calculated liquefaction potential indices (LPI) from available downhole data. This study suggests that the employed methodology can be a quick, non-invasive, and cost-effective complement to existing downhole measurements in the assessment of liquefaction. Such a method can be adapted between borehole data gaps to extrapolate information where downhole data is limited or not always available.

引用

页码：132 / 134

页数：3

共 4 条

[1] Ishihara K., 1996, Soil behaviour in earthquake geotechnics
[2] Iwasaki T., 1984, International Journal of Soil Dynamics and Earthquake Engineering, V3, P49, DOI 10.1016/0261-7277(84)90027-5
[3] Nakamura Y., 1996, QR of RTRI, V37, P112
[4] Nakamura Y., 1989, Q REPORT RAILWAY TEC, V30

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