Shake table testing of the dynamic interaction between two and three adjacent buildings (SSSI)

Abstract

Shake table testing of the dynamic interaction between two and three adjacent buildings (SSSI)Aldaikh, Hesham; Alexander, Nicholas A.; Ibraim, Erdin; Knappett, Jonathan Abstract 9The dynamic interaction of adjacent buildings in cities and urban areas through the soil medium is inevitable. 10This fact has been confirmed by various analytical and numerical studies. However, very little research is 11 available on the physical modelling of the Structure-Soil-Structure Interaction (SSSI) problem and its effect 12 on the dynamics of adjacent structures. In this paper, a series of shaking table tests was conducted at the 13 Earthquake and Large Structures Laboratory (EQUALS) at the University of Bristol to examine the effects of 14 SSSI on the response of a model building when bordered by up to two other model buildings under dynamic 15 excitation. The results indicated that depending on their height, the presence of one or two adjacent building 16 could positively or negatively alter seismic power and peak acceleration responses of a building in 17comparison to when it is tested in isolation. 18 19

Higher mode seismic structure-soil-structure interaction between adjacent building during earthquakes

“…Additionally, Aldaikh et al [24] proposed an alternative closedform analytical expression for these interaction springs based on a Boussinesq approximation of the surficial displacement fields. These alternative formulae where shown to be completely consistent with those initially proposed and validated in [22,23,28]. Vicencio and Alexander [25] extended these previous models further by permitting the soil to exhibit nonlinear hysteretic behaviour.…”

“…These models were validated using finite element analyses. Aldaikh et al [23,28] and Knappett et al [29] extended the validation of these proposed interaction-spring models with both physical shake table and centrifuge tests. Additionally, Aldaikh et al [24] proposed an alternative closedform analytical expression for these interaction springs based on a Boussinesq approximation of the surficial displacement fields.…”

Dynamic interaction between adjacent buildings through nonlinear soil during earthquakes

“…The seismic ground motion employed is spectrally matched with EC8 elastic spectra. This model in its linear state was validated with finite element analysis [17] and using a small scale physical experimental test at the University of Bristol's shaking table [12].…”

“…Kitada et al [8], Yano et al [9], Hans et al [10], Li et al [11] are experimental in situ studies. Aldaikh et al [12] performed a series of scale model shaking table test to study the effect of SSSI on the response of building with two or three adjacent buildings. Numerical studies based on finite element method (FEM), boundary elements method (BEM) or a combination of these two FEM/BEM procedures with Bard et al [13], Yahyai et al [14], Padron et al [15], Bolisetti and Whittaker [16], Alexander et al [17], Aldaikh et al [18], Chouw and Schmid [47] and Ogut and Fukuwa [48].…”

Real-time dynamic substructure testing of soil-adjacent structure system based on branch mode method

“…Aldaikh H. et al carried out a shake table test of the dynamic interaction on a group of three buildings. The adverse and beneficial effects of SASI under seismic excitation were explored [7].…”