Experimental Study on the Seismic Mitigation Performance of Metafoundations on a Uniform Soil Layer

被引：3

作者：

Xiao, Lei ^{[1
,2
]}

Sun, Feifei ^{[1
,5
]}

Bursi, Oreste S. ^{[3
]}

Li, Heng ^{[2
]}

Wang, Meng ^{[4
]}

机构：

[1] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China

[2] Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hong Kong, Peoples R China

[3] Univ Trento, Dept Civil Environm & Mech Engn, Trento, Italy

[4] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

[5] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China

来源：

JOURNAL OF EARTHQUAKE ENGINEERING | 2023年 / 27卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Soil-structure interaction; metafoundation; shaking table test; time-frequency representation; simplified model; METAMATERIALS; FEASIBILITY; PROTECTION; DESIGN; TREES;

D O I：

10.1080/13632469.2022.2162632

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The seismic mitigation performance of a metafoundation with soil-structure interaction was investigated utilizing shaking table tests. The results indicated that the metafoundation's performance strongly depended on the coupling among the frequencies of the soil layer, structural systems, and input motions. Due to resonant effects, the response of the controlled structure could be greater than that of the uncontrolled superstructure at small input PGAs. By contrast, the metafoundation exhibited excellent mitigation effects at large PGAs. A simplified elastic model was validated by the experimental results. Then the validated model contributed to the interpretation of experimental phenomena based on equivalent linear parameters.

引用

页码：4206 / 4236

页数：31

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