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http://dx.doi.org/10.7843/kgs.2018.34.1.25

Foundation-soil-foundation Interaction of Shallow Foundations Using Geo Centrifuge: Experimental Approach  

Ngo, Linh Van (Dept. of Civil and Environmental Engrg., Chonnam National Univ.)
Kim, Jae-Min (Dept. of Marine and Civil Engrg., Chonnam National Univ.)
Lim, Jaesung (Dept. of Civil and Environmental Engrg., Chonnam National Univ.)
Lee, Changho (Dept. of Marine and Civil Engrg., Chonnam National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.1, 2018 , pp. 25-35 More about this Journal
Abstract
Geocentrifuge tests are performed to investigate the structure-soil-structure interaction of shallow foundations that have various sizes. The soil specimen is prepared by using the air-pluviation, and the dynamic responses of the foundation are monitored with separation distances between the two foundations and the embedment. During the centrifugal test, the measured ground acceleration shows a tendency to increase with the increase of the input seismic amplitude, and maximum acceleration is measured at the surface due to the ground amplification. As the separation distance between the two foundations decreases, the ratio of the response spectral acceleration (RRS) increases and the period at the peak RRS decreases due to the structure-soil-structure interaction (SSSI). The RRS of the two foundations tends to decrease when the foundations are buried in the ground at the same separation distance.
Keywords
Embedment; Geocentrifuge; Ratio of response spectrum (RRS); Separation distance; Shallow foundation; Structure-soil-structure interaction (SSSI);
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