Abstract: The objective of the current study is to study the seismic response of structures on improved soil condition using stone columns as a liquefaction countermeasure. For this purpose, numerical simulations of a building modelled as single degree-of- freedom (SDOF) is performed using time history analysis considering two different cases of the beneath the model. The first case deal with the original unimproved soil, while the second one considers an improved base soil supporting the SDOF building model. An efficient discrete springs and dashpots to represent the sway and rocking movements of the soil mass. Moreover, the equivalent-linear approach is used to numerically simulate the seismic soil response. Three different records of different intensities are used to excite the SDOF model to perform the analysis. The examined cases indicate that the use of improvement technique may simultaneously have a beneficial or harmful effect on the global seismic response of the system during earthquake loads.
Keywords: Soil improvement; Vibro stone columns; Dynamic soil properties; SDOF; Liquefaction.
Title: Seismic Response of Structures Rested on Improved Soils
Author: Ayman Abd-Elhamed
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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