Comparative study on high-rise isolated structure founded on various soil foundations by using shaking table tests
Weiqing Liu, Changping Li, Shuguang Wang, Dongsheng Du, Hai Wang
Author information+
College of Civil Engineering, Nanjing University of Technology, Nanjing210009, China
{{custom_zuoZheDiZhi}}
{{custom_authorNodes}}
{{custom_bio.content}}
{{custom_bio.content}}
{{custom_authorNodes}}
Show less
History+
Received
Revised
Published
2012-08-09
2012-09-13
2013-08-25
Issue Date
2013-08-25
Abstract
Shaking table tests about the comparison of dynamic Soil-Structure Interaction (SSI) systems were conducted, to investigate the seismic behavior and the isolation effectiveness of a high-rise isolated structure founded on various soil. A laminar shear soil container was designed to minimize the boundary effects. The high-rise isolated structure was modeled by a five-story steel frame with aspect ratio of 4, founded on rigid foundation, homogeneous soft soil foundation and layered liquefiable foundation, respectively. Test results indicate that the natural frequency of the SSI isolated structure system is less than that of the system when SSI is not taken into account. The damping ratio of the isolated structure on homogeneous soft soil foundation is larger than that of the structure on rigid foundation, while it is smaller when founded on liquefiable foundation. It is also shown that the isolation displacement may increase obviously when founded on soft soil, while decrease when founded on liquefiable foundation. This study concluded that, even founded on soft soil or liquefiable foundation, the isolation effectiveness of the high-rise isolated structure can be warranted.
Weiqing Liu;Changping Li;Shuguang Wang;Dongsheng Du;Hai Wang.
Comparative study on high-rise isolated structure founded on various soil foundations by using shaking table tests[J]. Journal of Vibration and Shock, 2013, 32(16): 128-133
PDF(2592 KB)
