期刊
GEOMECHANICS AND ENGINEERING
卷 19, 期 5, 页码 407-420出版社
TECHNO-PRESS
DOI: 10.12989/gae.2019.19.5.407
关键词
structure-soil-structure interaction; over-turning moment; base-shear force; rocking stiffness; moment-to-shear ratio
资金
- National Research Foundation of Korea (NRF) - Korean government [NRF-2017R1C1B2004036]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20161520101130]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20161520101130] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper illustrates the results of a series of seismic geotechnical centrifuge experiments to explore dynamic structure-soil-structure interaction (SSSI) of two structures (named S1 and S2) installed on ground surface. A dense homogeneous ground is prepared in an equivalent shear beam (ESB) container. Two structural models are designed to elicit soil-foundation-structure interaction (SFSI) with different masses, heights, and dynamic characteristics. Five experimental tests are carried out for: (1) two reference responses of the two structures and (2) the response of two structures closely located at three ranges of distance. It is found that differential settlements of both structures increase and the smaller structure (S2) inversely rotates out of the other (S1) when they interact with each other. S2 structure experiences less settlement and uplift when at a close distance to the Si structure. Furthermore, the Si structure, which is larger one, shows a larger rocking and a smaller sliding response due to the SSSI effects, while S2 structure tends to slide more than that in the reference test, which is illustrated by an increase in sliding response and rocking stiffness as well as a decrease in moment-to-shear ratio (M/H.L) of the S2 structure.
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