Settlement of Rigid Circular Foundations during Seismic Shaking in Shaking Table Tests
Publication: International Journal of Geomechanics
Volume 12, Issue 4
Abstract
The settlements of structures resting on saturated sand deposits are examined in shaking table tests. Two series of tests are conducted to examine the effects of the duration of seismic shaking and the group effects of closely spaced foundations. The models of rigid circular foundations are founded on the surface of saturated clean fine sand, and seismically excited. The settlements of model foundations and the distributions of excess pore-water pressures induced around the model foundations are observed. In one of the test series, the settlements occurring during shaking are found to increase as the durations of shaking increase; however, the settlements occurring after the end of the shaking remain almost the same, regardless of the durations of shaking. The total settlements are, therefore, found to increase as the durations of shaking increase. In the other test series, the settlements occurring during shaking remain almost the same, regardless of the spacing. However, the settlements occurring after the end of shaking are different, where the more closely spaced foundations tend to be subjected to smaller settlements.
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Acknowledgments
The writers would like to acknowledge Dr. K. Ito and his colleagues at the technical research center of the Obayashi Corporation for help in conducting a series of shaking table tests described in the current study. Thanks are also extended to a group of former students of the geotechnical engineering group at the Tokyo University of Science for help in conducting a series of shaking table tests described in the current study.
References
Acacio, A. A., Kobayashi, Y., Towhata, I., Bautista, R. T., and Ishihara, K. (2001). “Subsidence of building foundation resting upon liquefied subsoil: case studies and assessment.” Soils Found.SOIFBE, 41(6), 111–128.
Dashti, S., Bray, J. D., Pestana, J. M., Riemer, M. F., and Wilson, D. (2010a). “Centrifuge testing to evaluate and mitigate liquefaction-induced building settlement mechanisms.” J. Geotech. Geoenviron. Eng.JGGEFK, 136(7), 918–929.
Dashti, S., Bray, J. D., Pestana, J. M., Riemer, M. F., and Wilson, D. (2010b). “Mechanisms of seismically-induced settlement of buildings with shallow foundations on liquefiable soil.” J. Geotech. Geoenviron. Eng.JGGEFK, 136(1), 151–164.
Ishihara, K. (1999). “Terzaghi oration: Geotechnical aspects of the 1995 Kobe earthquake.” Proc., 14th Int. Conf. on Soil Mech. and Found. Eng., Vol. 4, A.A. Balkema, Hamburg, Germany, 2047–2073.
Ishihara, K., Acacio, A. A., and Towhata, I. (1993). “Liquefaction-induced ground damage in Dagupan in the July 16, 1990 Luzon earthquake.” Soils Found.SOIFBE, 33(1), 133–154.
Kishida, H. (1966). “Damage to reinforced concrete buildings in Niigata City with special reference to foundation engineering.” Soils Found.SOIFBE, 6(1), 71–88.
Liu, L., and Dobry, R. (1997). “Seismic response of shallow foundation on liquefiable sand.” J. Geotech. Eng.JGENDZ, 123(6), 557–567.
Rayhani, M. H. T., and El Naggar, M. H. (2008). “Numerical modeling of seismic response of rigid foundation on soft soil.” Int. J. Geomech.IJGNAI, 8(6), 336–346.
Rollins, K. M., and Seed, H. B. (1990). “Influence of buildings on potential liquefaction damage.” J. Geotech. Eng.JGENDZ, 116(2), 165–185.
Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 12 • Issue 4 • August 2012
Pages: 462 - 470
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Aug 22, 2010
Accepted: Jul 8, 2011
Published online: Jul 16, 2012
Published in print: Aug 1, 2012
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