Centrifuge Modeling of the Seismic Behavior of Soft Clay Slopes
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 148, Issue 11
Abstract
This paper presents the experimental results and analysis from two centrifuge experiments that simulated the seismic response of a gentle slope in soft clay. The two models consisted of a three-degree and a six-degree slope in soft clay, respectively, which are representative of typical slopes found on marine seabeds on the continental margins. The models were built in a laminar container in order to reproduce infinite slope boundary conditions. In-flight characterization investigations consisting of T-bar tests and air hammer tests were performed to obtain undrained shear strength profiles and shear wave velocities at various depths, respectively. A suite of earthquakes was applied, including sinusoidal waves and scaled real motions, in order to observe the response of the models in terms of the propagation of shear waves and the generation of lateral displacements at various depths in the slopes. The results showed that the model preparation approach ensures the repeatability of the experiments, enabling the evaluation of the impact of the slope angle on the seismic response of the gentle slopes studied. On average, the permanent displacements measured at the surface of the six-degree slope were three times greater than those measured at the top of the three-degree slope. In these slopes, nonlinear effects were observed in terms of the peak ground acceleration (PGA) that depended both on the slope angle and the intensity of shaking.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors would like to acknowledge support from PETROBRAS for the project “Seismic Centrifuge Modeling of Gentle Slopes” (Contractual Instrument 2017/00259-5). Acknowledgment is also due to the Rio de Janeiro State Research Foundation (FAPERJ) and the National Institute of Science and Technology CNPq-REAGEO for financial support for the project. The authors are grateful to the staff of at the Schofield Centre for assistance in the development of the centrifuge experiments. Finally, the authors are thankful for the administrative support of Ricardo Garske Borges, D.Sc.
References
Afacan, K. B., S. J. Brandenberg, and J. P. Stewart. 2013. “Centrifuge modeling studies of site response in soft clay over wide strain range.” J. Geotech. Geoenviron. Eng. 140 (2): 1–13. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001014.
Ambraseys, N. N., and J. M. Menu. 1988. “Earthquake-induced ground displacements.” Earthquake Eng. Struct. Dyn. 16 (7): 985–1006. https://doi.org/10.1002/eqe.4290160704.
Biscontin, G., and J. M. Pestana. 2006. “Factors affecting seismic response of submarine slopes.” Nat. Hazards Earth Syst. Sci. 6 (1): 97–107. https://doi.org/10.5194/nhess-6-97-2006.
Boore, D. M., and G. M. Atkinson. 2008. “Ground-motion prediction equations for the average horizontal component of PGA, PGV, and 5%-Damped PSA at spectral periods between 0.01 s and 10.0 s.” Earthquake Spectra 24 (1): 99–138. https://doi.org/10.1193/1.2830434.
Borges, R. G., M. Assumpção, M. C. F. Almeida, and M. S. S. Almeida. 2020. “Seismicity and seismic hazard in the continental margin of Southeastern Brazil.” J. Seismolog. 24 (6): 1205–1224. https://doi.org/10.1007/s10950-020-09941-4.
Brennan, A. J., S. P. G. Madabhushi, and N. E. Houghton. 2006. “Comparing laminar and equivalent shear beam (ESB) containers for dynamic centrifuge modeling.” In Proc., 6th Int. Conf. on Physical Modelling in Geotechnics, 6th ICPMG ’06, edited by C. W. W. Ng, L. M. Zhang, and Y. H. Wang, 171–176. Oxfordshire, UK: Taylor & Francis.
Brink, U. S., B. D. Andrews, and N. C. Miller. 2016. “Seismicity and sedimentation rate effects on submarine slope stability.” Geology 44 (7): 563–566. https://doi.org/10.1130/G37866.1.
BSSC (Building Seismic Safety Council). 2003. NEHRP recommended provisions for seismic regulations for new buildings and other structures. Washington, DC: BSSC.
Clare, M., et al. 2018. “A consistent global approach for the morphometric characterization of subaqueous landslides.” Geol. Soc. 477 (1): 455–477. https://doi.org/10.1144/SP477.15.
Collico, S., M. Arroyo, R. Urgeles, E. Gràcia, M. Devincenzi, and N. Peréz. 2020. “Probabilistic mapping of earthquake-induced submarine landslide susceptibility in the South-West Iberian margin.” Mar. Geol. 429 (45): 106296. https://doi.org/10.1016/j.margeo.2020.106296.
Day, S., P. Llanes, E. Silver, G. Hoffmann, S. Ward, and N. Driscoll. 2015. “Submarine landslide deposits of the historical lateral collapse of Ritter Island, Papua New Guinea.” Mar. Pet. Geol. 67 (5): 419–438. https://doi.org/10.1016/j.marpetgeo.2015.05.017.
Gamboa, D., R. Omira, and P. Terrinha. 2021. “A database of submarine landslides offshore West and Southwest Iberia.” Sci. Data 8 (185): 21. https://doi.org/10.1038/s41597-021-00969-w.
Garala, T. K., S. P. G. Madabhushi, and R. Di Laora. 2020. “Experimental investigation of kinematic pile bending in layered soils using dynamic centrifuge modeling.” Geotechnique 14 (Dec): 185. https://doi.org/10.1680/jgeot.19.
Ghosh, B., and S. P. G. Madabhushi. 2002. “An efficient tool for measuring shear wave velocity in the centrifuge.” In Proc., Int. Conf. on Physical Modeling in Geotechnics: ICPMG’02, edited by R. Phillips, P. J. Guo, and R. Popescu, 119–124. Rotterdam, Netherlands: Balkema.
Hotta, M. M., M. S. S. Almeida, D. T. Pelissaro, J. R. M. S. Oliveira, S. Tibana, and R. Garske. 2019. “Centrifuge tests for evaluation of submarine-mudflow hydroplaning and turbidity currents.” Int. J. Phys. Modell. Geotech. 2019 (1): 1–15. https://doi.org/10.1680/jphmg.18.00081.
Jibson, R. W. 2007. “Regression models for estimating coseismic landslide displacement.” Eng. Geol. 91 (2–4): 209–218. https://doi.org/10.1016/j.enggeo.2007.01.013.
Jibson, R. W. 2011. “Methods for assessing the stability of slopes during earthquakes—A retrospective.” Eng. Geol. 122 (1–2): 43–50. https://doi.org/10.1016/j.enggeo.2010.09.017.
Jibson, R. W., and J. A. Michael. 2009. Maps showing seismic landslide hazards in Anchorage. Washington, DC: US Geological Survey.
Kaynia, A. M., and G. Saygili. 2014. “Predictive models for earthquake response of clay and sensitive clay slopes.” In Perspectives on European earthquake engineering and seismology. Berlin: Springer.
Kempton, J. J., and J. P. Stewart. 2006. “Prediction equations for significant duration of earthquake ground motions considering site and near-source effects.” Earthquake Spectra 22 (4): 985–1013. https://doi.org/10.1193/1.2358175.
Kutter, B. L., and R. G. James. 1989. “Dynamic centrifuge tests on clay embankments.” Geotechnique 39 (1): 91–106. https://doi.org/10.1680/geot.1989.39.1.91.
L’Heureux, J. S., et al. 2012. “Identification of weak layers and their role for the stability of slopes at Finneidfjord, Northern Norway.” In Submarine mass movements and their consequences. Berlin: Springer.
Locat, J., and H. J. Lee. 2000. “Submarine landslides: Advances and challenges.” Can. Geotech. J. 2000 (39): 193–212. https://doi.org/10.1139/t01-089.
Madabhushi, S. P. G. 2015. Centrifuge modelling for civil engineers. Boca Raton, FL: CRC Press.
Madabhushi, S. P. G., S. K. Haigh, N. E. Houghton, and E. Gould. 2012. “Development of a servo-hydraulic earthquake actuator for the Cambridge Turner beam centrifuge.” Int. J. Phys. Modell. Geotech. 12 (2): 77–88. https://doi.org/10.1680/ijpmg.11.00013.
Makdisi, F., and H. Seed. 1978. “Simplified procedure for estimating dam and embankment earthquake-induced deformations.” J. Geotech. Eng. Div. 104 (7): 849–867. https://doi.org/10.1061/AJGEB6.0000668.
Newmark, N. M. 1965. “Effects of earthquakes on dams and embankments.” Geotechnique 15 (2): 139–160. https://doi.org/10.1680/geot.1965.15.2.139.
Nian, T. K., X. S. Guo, D. F. Zheng, Z. X. Xiu, and Z. B. Jiang. 2019. “Susceptibility assessment of regional submarine landslides triggered by seismic actions.” Appl. Ocean Res. 93 (12): 101964. https://doi.org/10.1016/j.apor.2019.101964.
Nittrouer, C. A., J. A. Austin, M. E. Field, J. H. Kravitz, J. P. M. Syvitski, and P. L. Wiberg. 2007. “Writing a Rosetta stone: Insights into continental-margin sedimentary processes and strata.” In Continental margin sedimentation. Hoboken, NJ: Wiley. https://doi.org/10.1002/9781444304398.ch1.
Piper, D. J. W. 2005. “Sedimentary processes—Deep water processes and deposits.” In Encyclopedia of geology, 641–649. Amsterdam, Netherlands: Elsevier.
Raines, R. D., and J. Garnier. 2004. “Physical modeling of suction piles in clay.” In Proc., ASME 2004 23rd Int. Conf. on Offshore Mechanics and Arctic Engineering, 621–631. Reston, VA: ASME.
Rayhani, M., and M. H. El Naggar. 2007. “Centrifuge modeling of seismic response of layered soft clay.” Bull. Earthquake Eng. 5 (4): 571–589. https://doi.org/10.1007/s10518-007-9047-0.
Rodríguez-Ochoa, R., F. Nadim, and M. A. Hicks. 2015. “Influence of weak layers on seismic stability of submarine slopes.” Mar. Pet. Geol. 65 (Apr): 247–268. https://doi.org/10.1016/j.marpetgeo.2015.04.007.
Scarselli, N. 2020. “Submarine landslides—Architecture, controlling factors and environments. A summary.” Reg. Geol. Tectonics: Principles Geol. Anal. 1 (Aug): 417–439. https://doi.org/10.1016/b978-0-444-64134-2.00015-8.
Schofield, A. N. 1980. “Cambridge centrifuge operations.” Géotechnique 30 (3): 227–268. https://doi.org/10.1680/geot.1980.30.3.227.
Soriano, C., M. C. F. Almeida, S. P. G. Madabhushi, S. Stanier, M. S. S. Almeida, H. Liu, and R. G. Borges. 2021. “Seismic centrifuge modeling of a gentle slope of layered clay, including a weak layer.” Geotech. Test. J. 1 (Jan): 22. https://doi.org/10.1520/GTJ20200236.
Springman, S. M. 1993. Centrifuge modelling in clay: Marine applications. Technical Rep. No. CUED/D-SOILS/TR260. Cambridge, UK: Univ. of Cambridge.
Stewart, D. P., and M. F. Randolph. 1991. “A new site investigation tool for the centrifuge.” In Proc., Int. Conf. on Centrifuge Modeling–Centrifuge’91, 531–538. Rotterdam, Netherlands: Balkema.
Stewart, J. P., and A. H. Liu. 2000. “Ground motion amplification as a function of surface geology.” In Proc., SMIP2000 Seminar on Utilization of Strong Motion Data, 1–22. Sacramento, CA: California Strong Motion Instrumentation Program.
Suetomi, I., E. Ishida, R. Isoyama, and Y. Goto. 2004. “Amplification factor of peak ground motion using average shear wave velocity of shallow soil deposits.” In Proc., 13th World Conf. on Earthquake Engineering. Vancouver, BC, Canada: Canadian Association for Earthquake Engineering, International Association for Earthquake Engineering.
Talling, P. J., M. Clare, M. Urlaub, E. Pope, J. E. Hunt, and S. F. L. Watt. 2014. “Large submarine landslides on continental slopes: Geohazards, methane release, and climate change.” Oceanography 27 (2): 32–45. https://doi.org/10.5670/oceanog.2014.38.
Tarazona, S. F. M., M. C. F. Almeida, A. Bretschneider, M. S. S. Almeida, S. Escoffier, and R. G. Borges. 2020. “Evaluation of seismic site response of submarine clay canyons using centrifuge modeling.” Int. J. Phys. Modell. Geotech. 20 (4): 224–238. https://doi.org/10.1680/jphmg.18.00084.
Viggiani, G., and J. H. Atkinson. 1995. “Stiffness of fine-grained soil at very small strains.” Geotechnique 45 (2): 249–265. https://doi.org/10.1680/geot.1995.45.2.249.
Wroth, C. P. 1984. “The interpretation of in situ soil test.” Geotechnique 34 (4): 449–489. https://doi.org/10.1680/geot.1984.34.4.449.
Yang, Q., B. Zhu, and T. Hiraishi. 2021. “Probabilistic evaluation of the seismic stability of infinite submarine slopes integrating the enhanced Newmark method and random field.” Bull. Eng. Geol. Environ. 80 (5): 2025–2043. https://doi.org/10.1007/s10064-020-02058-5.
Zhang, C., D. White, and M. Randolph. 2011. “Centrifuge modeling of the cyclic lateral response of a rigid pile in soft clay.” J. Geotech. Geoenviron. Eng. 137 (7): 717–729. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000482.
Zhou, Y., J. Chen, Y. Chen, Y. She, A. M. Kaynia, B. Huang, and Y. M. Chen. 2017a. “Earthquake response and sliding displacement of submarine sensitive clay slopes.” Eng. Geol. 227 (Jan): 69–83. https://doi.org/10.1016/j.enggeo.2017.05.004.
Zhou, Y. G., J. Chen, Y. M. Chen, B. Kutter, B. Zheng, D. Wilson, M. Stringer, and E. Clukey. 2017b. “Centrifuge modeling and numerical analysis on seismic site response of deep offshore clay deposits.” Eng. Geol. 227 (Jan): 54–68. https://doi.org/10.1016/j.enggeo.2017.01.008.
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Received: Aug 30, 2021
Accepted: May 24, 2022
Published online: Aug 30, 2022
Published in print: Nov 1, 2022
Discussion open until: Jan 30, 2023
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