Maximum Credible Earthquake Ground Motions with Focus on Site Amplification due to Deep Subsurface
Received: 9 December 2020 | Revised: 5 January 2021 | Accepted: 11 January 2021 | Online: 11 April 2021
Since an Earthquake Ground Motion (EGM) is amplified from the propagation through the ground, different models are required for each ground type in the seismic design of structures. While the shallow subsurface indicators are used for the classification of ground types, a deep subsurface has a significant impact on the amplification of the EGMs. This study discusses the maximum credible EGMs for seismic design reflecting seismic amplification due to deep subsurface. The design spectra, reflecting the site amplification factor of the target location, are presented by the calculation of the EGMs with the same source and path characteristics and different site amplification factors as recent major Japanese earthquake records have shown, from the perspective of establishing the maximum credible EGMs that may occur in the future at a target site. The present design spectra, which are based on the natural period of a shallow subsurface, are compared with those based on the site amplification factors, considering the effect of deep subsurfaces. Although there are almost no differences in the design spectra with the present design methods according to the surface ground type, the proposed method provides significantly different design spectra for each site amplification factor.
Keywords:maximum credible earthquake ground motion, site amplification factor, deep subsurface, earthquake response analysis
T. Nagao and Y. Fukushima, "Source- and Site-Specific Earthquake Ground Motions:Application of a State-of-the-Art Evaluation Method," Engineering, Technology & Applied Science Research, vol. 10, no. 4, pp. 5882-5888, Aug. 2020. https://doi.org/10.48084/etasr.3612
NEHRP recommended provisions for seismic regulations for new buildings and other structures. Washington DC, USA: Building Seismic Safety Council for the Federal Emergency Management Agency, 2001.
AASHTO Guide Specifications for LRFD Seismic Bridge Design, 2nd Edition, with 2012 and 2014 Interim Revisions. Washington, DC, USA: AASHTO, 2011.
Eurocode 8, Design of structures for earthquake resistance, Part1: general rules, seismic actions and rules for buildings. Brussels, Belgium: European Committee for Standardization, 2003.
Recommended Provisions for Seismic Regulations for New Buildings and Other Structures (FEMA 450), Part 1: Provisions. Washington DC, USA: Building Seismic Safety Council for the Federal Emergency Management Agency, 2003.
Minimum Design Loads for Buildings and Other Structures, ASCE/SEI 7-10. ASCE, 2013.
Specifications for highway bridges, Part 5, Seismic design, ver. 2012. Japan Road Association, 2016.
D. M. Boore and W. B. Joyner, "Site amplifications for generic rock sites," Bulletin of the Seismological Society of America, vol. 87, no. 2, pp. 327-341, Apr. 1997.
Y. Fukushima, T. Nagao, J. Oshige, and I. Suetomi, "Ground motion evaluation for intra-plate earthquake by different site amplification factors and source models," in 7th lnternational Conference on Earthquake Geotechnical Engineering, Roma, Italy, Jun. 2019, pp. 2484-2492.
T. Nagao, "Seismic Amplification by Deep Subsurface and Proposal of a New Proxy," Engineering, Technology & Applied Science Research, vol. 10, no. 1, pp. 5157-5163, Feb. 2020. https://doi.org/10.48084/etasr.3276
R. D. Borcherdt, "Effects of local geology on ground motion near San Francisco Bay," Bulletin of the Seismological Society of America, vol. 60, no. 1, pp. 29-61, Feb. 1970.
J. Lermo and F. J. Chávez-García, "Site effect evaluation using spectral ratios with only one station," Bulletin of the Seismological Society of America, vol. 83, no. 5, pp. 1574-1594, Oct. 1993.
D. J. Andrews, "Objective Determination of Source Parameters and Similarity of Earthquakes of Different Size," in Earthquake Source Mechanics, Washington, USA: American Geophysical Union, 1986, pp. 259-267. https://doi.org/10.1029/GM037p0259
T. Iwata and K. Irikura, "Source Parameters of the 1983 Japan Sea Earthquake Sequence," Journal of Physics of the Earth, vol. 36, no. 4, pp. 155-184, 1988. https://doi.org/10.4294/jpe1952.36.155
J. Boatwright, J. B. Fletcher, and T. E. Fumal, "A general inversion scheme for source, site, and propagation characteristics using multiply recorded sets of moderate-sized earthquakes," Bulletin of the Seismological Society of America, vol. 81, no. 5, pp. 1754-1782, Oct. 1991.
L. F. Bonilla, J. H. Steidl, G. T. Lindley, A. G. Tumarkin, and R. J. Archuleta, "Site amplification in the San Fernando Valley, California: Variability of site-effect estimation using the S-wave, coda, and H/V methods," Bulletin of the Seismological Society of America, vol. 87, no. 3, pp. 710-730, Jun. 1997.
E. H. Field and K. H. Jacob, "A comparison and test of various site-response estimation techniques, including three that are not reference-site dependent," Bulletin of the Seismological Society of America, vol. 85, no. 4, pp. 1127-1143, Aug. 1995.
S. Parolai et al., "Comparison of Different Site Response Estimation Techniques Using Aftershocks of the 1999 Izmit Earthquake," Bulletin of the Seismological Society of America, vol. 94, no. 3, pp. 1096-1108, Jun. 2004. https://doi.org/10.1785/0120030086
L. Malagnini, K. Mayeda, A. Akinci, and P. L. Bragato, "Estimating Absolute Site Effects," Bulletin of the Seismological Society of America, vol. 94, no. 4, pp. 1343-1352, Aug. 2004. https://doi.org/10.1785/012003161
S. Drouet, P. Triantafyllidis, A. Savvaidis, and N. Theodulidis, "Comparison of Site-Effects Estimation Methods Using the Lefkas, Greece, 2003 Earthquake Aftershocks," Bulletin of the Seismological Society of America, vol. 98, no. 5, pp. 2349-2363, Oct. 2008. https://doi.org/10.1785/0120080004
J. H. Steidl, A. G. Tumarkin, and R. J. Archuleta, "What is a reference site?," Bulletin of the Seismological Society of America, vol. 86, no. 6, pp. 1733-1748, Dec. 1996.
S. Kinoshita, "Kyoshin Net (K-NET)," Seismological Research Letters, vol. 69, no. 4, pp. 309-332, Jul. 1998. https://doi.org/10.1785/gssrl.69.4.309
S. Aoi, K. Obara, S. Hori, K. Kasahara, and Y. Okada, "New strong-motion observation network: KiK-net," Eos, Transactions of the American Geophysical Union, vol. 81, 2000.
A. Nozu and T. Sugano, "Site Amplification Factor for Strong-Motion Sites in Northern Hokkaido, Japan, Based on Spectral Inversion Technique," Port and Airport Research Institute, Japan, Technical Note of the Port and Airport Research Institute 1214, 2010.
D. M. Boore, E. M. Thompson, and H. Cadet, "Regional Correlations of VS30 and Velocities Averaged Over Depths Less Than and Greater Than 30 Meters," Bulletin of the Seismological Society of America, vol. 101, no. 6, pp. 3046-3059, Dec. 2011. https://doi.org/10.1785/0120110071
N. Yoshida, S. Kobayashi, I. Suetomi, and K. Miura, "Equivalent linear method considering frequency dependent characteristics of stiffness and damping," Soil Dynamics and Earthquake Engineering, vol. 22, no. 3, pp. 205-222, Apr. 2002. https://doi.org/10.1016/S0267-7261(02)00011-8
S. Yasuda and I. Yamaguchi, "Dynamic shear modules obtained in the laboratory and in-situ," in Proceedings of the Symposium on Evaluation of Deformation and Strength of Sandy Grounds, 1985, pp. 115-118.
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