Browse > Article

Verification of Similitude Law for 1g Shaking Table Tests through Modeling of Models  

Hwang Jae-Ik (School of Civil, Urban & Geosystem Engrg., Seoul National Univ.)
Kim Sung-Ryul (Research Institute Seoul National Univ.)
Jang In-Sung (Coastal and Harbor Engrg., Research Lab. Korea Ocean Research and Development Institute)
Kim Myoung-Mo (School of Civil, Urban & Geosystem Engrg., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.9, 2004 , pp. 91-103 More about this Journal
Abstract
A series of shaking table model tests were performed to verify the validity of similitude law, which is suggested by lai (1989) to simulate the dynamic behavior of soil-fluid-structure system for is shaking table tests. In the tests, the similitude law suggested by lai was applied to determine the length and the time scaling factors. Also, the steady state concept was used in determining the density of model backfill soil, which is a key factor in simulating the development of excess pore pressure during shaking. The similitude law was verified by checking whether three different sizes of quay walls show the identical behavior or not. The similar responses of acceleration, excess pore pressure and horizontal displacement of walls were obtained far the small and large models. However, the medium model showed larger responses than those of the small and large models because of the resonance between the frequency of input acceleration and the natural frequency of the wall system. In addition, the vertical displacement and rotational angle of the walls became larger with the increase of model size.
Keywords
Gravity guay wall; Modeling of models; Shaking table tests; Similitude law; Steady state concept;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Been, K. and Jeffries, M.G. (1985), 'A state parameter for sands', Geotechnique, Vol.35, No.2, pp.99-112   DOI   ScienceOn
2 Castro, G. (1969), Liquefaction of sands, Harvard Soil Mechanics Series 87, Harvard University
3 Iai, S. (1989), 'Similitude for shaking table tests on soil-structurefluid model in Ig gravitational field', Soils and Foundations, Vol.29, No.1, pp.105-118   DOI
4 Roscoe, K.H. (1968), 'Soils and model tests', Proc. ofInstruction of Mechanical Engineers, Journal of Strain Analysis, Vol.3, No.1, pp.57-64   DOI
5 Whitman, R.V. and Liao, S. (1985), Seismic design of retaining walls, Miscellaneous Paper GL-85-1, U.S. ArmyEngineer Waterways Experiment Station, Vicksburg, Mississippi
6 Schofield, A.N. (1980), 'Cambridge geotechnical centrifuge operations', Geotechnique, Vol.30, No.3, pp.227-268   DOI   ScienceOn
7 Kagawa, T. (1978), 'On the Similitude in Model Vibration Tests of Earth Structures', Soil Mechanics and Foundation Engineering, Proc. of Japanese Society of Civil Engineering, pp.69-77
8 Gibson, A. D. and Scott, R F. (1995), 'Comparison of a Ig and centrifuge model dynamic liquefaction test: preliminary results', First International Conference on Earthquake Geotechnical Engineering, A.A. Balkema, Rotterdam, Vol.2, pp.773-778
9 Westergaard, H.M. (1933), 'Water pressures on dams during earthquakes', Trans. of ASCE, Vol.98, pp.418-432
10 Kokusho, T., and Iwatate, T. (1979), 'Scaled model tests and numerical analyses on nonlinear dynamic response of soft grounds', Proc. of Japan Society of Civil Engineers, No.285, pp.57-67. (in Japanese)
11 Scott, R.F. (1989), 'Centrifuge and modelling technology: a survey', Rev. Franc. Geotech., No.48, July, pp.15-34
12 Verdugo, R.L. (1992), Characterization of sandy soil behavior under large deformation, Ph.D.Thesis presented to University of Tokyo, Japan
13 Iai, S. (1990), 'Similitude for shaking table tests on soil-structurefluid model in Ig gravitational field (closure)', Soils and Foundations, Vol.30, No.2, pp.153-157   DOI