Boundary conditions in dynamic centrifuge model experiments are very important as we seek to simulate the semi-infinite extent of a soil stratum. This paper concentrates on model containers designed for uniaxial horizontal shaking. The first section will describe the novel features of a new free-moving laminar box built at Cambridge. The second objective of the paper is to compare the behaviour of this zero natural frequency, low inertia container with that of an equivalent shear beam container. The dynamic performance is assessed in terms of instrument readings at the box centre and near the boundary, their phase lags, and their frequency transfer functions, for different soils. Both containers show little difference between box centre and end-wall for dry soils. However, the laminar container is shown to provide a slightly superior match even when the ESB is operating under design conditions.
|Title of host publication||Physical modelling in geotechnics : 6th ICPMG '06|
|Subtitle of host publication||proceedings of the Sixth International Conference on Physical Modelling in Geotechnics--6th ICPMG'06, Hong Kong, 4-6 August 2006|
|Editors||C.W.W. Ng, L.M. Zhang, Y.H. Wang|
|Publisher||Taylor & Francis|
|Number of pages||6|
|Publication status||Published - 2006|
|Event||6th International Conference on Physical Modelling in Geotechnics - Hong Kong, China|
Duration: 4 Aug 2006 → 6 Aug 2006
|Name||Balkema-proceedings and monographs in engineering, water and earth sciences|
|Conference||6th International Conference on Physical Modelling in Geotechnics|
|Period||4/08/06 → 6/08/06|
Brennan, A. J., Madabhushi, S. P. G., & Houghton, N. E. (2006). Comparing laminar and equivalent shear beam (ESB) containers for dynamic centrifuge modelling. In C. W. W. Ng, L. M. Zhang, & Y. H. Wang (Eds.), Physical modelling in geotechnics : 6th ICPMG '06: proceedings of the Sixth International Conference on Physical Modelling in Geotechnics--6th ICPMG'06, Hong Kong, 4-6 August 2006 (Vol. 1-2, pp. 171-176). (Balkema-proceedings and monographs in engineering, water and earth sciences). Taylor & Francis.