ZHU Mingxuan,CHEN Lifei,YU Xu,et al.Influence of Sand Liquefaction on Seismic Response of Base Isolated Structures[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):162-170.
ZHU Mingxuan,CHEN Lifei,YU Xu,et al.Influence of Sand Liquefaction on Seismic Response of Base Isolated Structures[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):162-170. DOI: 10.13409/j.cnki.jdpme.201912083.
Influence of Sand Liquefaction on Seismic Response of Base Isolated Structures
Sand liquefaction will have a non-negligible impact on the seismic response of the structure, and this phenomenon will also have an impact on the seismic response laws of the base isolation structure. Based on the finite element method, the finite element analysis model of nonlinear dynamic interaction of soil-isolated structures was established by ABAQUS. The influence of different liquefaction conditions on the seismic response laws of base-isolated structures and the isolation effect were analyzed. The research shows that the pile foundation of the isolated structure can effectively improve the liquefaction resistance of the foundation soil, and thus ensure the overall stability of the isolated structure. In general, the isolation effect and seismic response of the isolated structures on the liquefied site are related to the characteristics of the input ground motion. The isolated performance remains good under near-field earthquakes, but reduced under far-field strong earthquakes. Besides, the large response of the isolation layer displacement may lead to the instability or strength damage of the isolation bearings. Particular attention must be paid to the design.
Ma Z J , Du P R , Gao X L , et al . Analysis of earthquake distributions in East Asia and in the world [J]. Earth Science Frontiers , 2010 , 17 ( 5 ): 215 - 233 . (in Chinese)
Zhu H P , Zhou F Y , Yuan Y . Development and analysis of the research on base isolated structures [J]. Engineering Mechanics , 2014 ( 3 ): 1 - 10 . (in Chinese)
Deng C G , Zeng M , Xu Z G . Progress of research on vertical isolation technology in structural engineering [J]. Journal of Architecture and Civil Engineering , 2019 , 36 ( 4 ): 1 - 10 . (in Chinese)
Wang Z H , Zhou E Q , Xu C . Advance and discussion on liquefaction-induced large deformation of soil [J]. Journal of Nanjing University of Technology (Natural Science Edition) , 2012 , 34 ( 5 ): 143 - 148 . (in Chinese)
Institute of Engineering Mechanics,China Earthquake Administration "Basic Database of Strong Earthquake and Engineering Damage Information" project team . Basic database of strong earthquake and engineering damage information completed [J]. World Earthquake Engineering , 2003 ( 4 ): 22 . (in Chinese)
Guo X . Characteristics and mechanism analysis of great Wenchuan earthquake [J]. Journal of earthquake engineering and engineering vibration , 2009 , 29 ( 6 ): 74 - 87 . (in Chinese)
Giona B M , Villamor P , Almond P , et al . Associations between sediment architecture and liquefaction susceptibility in fluvial settings: The 2010‑2011 Canterbury Earthquake Sequence, New Zealand [J]. Engineering Geology , 2018 , 237 : 181 ‑ 197 .
Cao Z Z , Hou L Q , Yuan X M , et al . Characteristics of liquefaction-induced damages during Wenchuan Ms 8.0 earthquake [J]. Rock and Soil Mechanics , 2010 , 31 ( 11 ): 3549 - 3555 . (in Chinese)
Yu X , Zhu C , Zhuang H Y . Seismic responses of a base isolated multi-story structure with different soil foundations by the shaking table tests [J]. Journal of Disaster Prevention and Mitigation Engineering , 2016 , 36 ( 5 ): 758 - 765 . (in Chinese)
Liu W Q , Wang S G , Lin Y . Research on the design method of base-isolated structure of Suqian Renfang Zhihui Building [J]. Journal of Building Structures , 2005 ( 2 ): 81 - 86 . (in Chinese)
Zhuang H Y , Chen G X . Constitutive method for large liquefaction deformation of sand and its implementation in ABAQUS software [J]. World Earthquake Engineering , 2011 , 27 ( 2 ): 45 - 50 . (in Chinese)
ABAQUS [CP]. Theory Manual Version 6 . 9 . H .K.S. 2009.
Zhuang H Y , Chen G X , Zhu D H . Dynamic visco‑plastic memorial nested yield surface model of soil and its verification [J]. Chinese Journal of Geotechnical Engineering , 2006 , 28 ( 10 ): 1267 ‑ 1272 . (in Chinese)
Zhuang H Y . Study on nonlinear dynamic soil-underground structure interaction and its large-size shaking table test [D]. Nanjing : Nanjing Tech University , 2006 . (in Chinese)
He Y J , Guo W H . Study on vibration reduction of cylindrical reticulated mega-structures with viscous dampers [J]. Journal of Disaster Prevention and Mitigation , 2017 , 37 ( 2 ): 230 - 236 . (in Chinese)
Yu X , Zhu C , Zhuang H Y , et al . Result comparison between experiment and numerical simulation for base isolated structure on soil ground [J]. Journal of Nanjing University of Aeronautics & Astronautics , 2016 , 48 ( 4 ): 590 - 597 . (in Chinese)
Liu W Q , Li C P , Wang S G , et al . Comparative study on highrise isolated structure founded on various soil foundations by using shaking table tests [J]. Journal of Vibration and Shock , 2013 , 32 ( 16 ): 128 - 133,151 . (in Chinese)