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A substructure shaking table test for reproduction of earthquake responses of high-rise buildings / Ji, Xiaodong in Earthquake engineering structural dynamics, Vol. 38 N° 12 (Octobre 2009) 

Public ISBD [article]  in Earthquake engineering structural dynamics > Vol. 38 N° 12 (Octobre 2009) . - pp. 1381-1399 Titre : A substructure shaking table test for reproduction of earthquake responses of high-rise buildings Type de document : texte imprimé Auteurs : Ji, Xiaodong, Auteur ; Kajiwara, Kouichi, Auteur ; Nagae, Takuya, Auteur ; Ryuta Enokida ; Nakashima, Masayoshi Article en page(s) : pp. 1381-1399 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Shaking  table  test;  Substructure;  IDCS  algorithm;  Model  matching  method;  H  method;  high-rise  building Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : When subjected to long-period ground motions, high-rise buildings' upper floors undergo large responses. Furniture and nonstructural components are susceptible to significant damage in such events. This paper proposes a full-scale substructure shaking table test to reproduce large floor responses of high-rise buildings. The response at the top floor of a virtual 30-story building model subjected to a synthesized long-period ground motion is taken as a target wave for reproduction. Since a shaking table has difficulties in directly reproducing such large responses due to various capacity limitations, a rubber-and-mass system is proposed to amplify the table motion. To achieve an accurate reproduction of the floor responses, a control algorithm called the open-loop inverse dynamics compensation via simulation (IDCS) algorithm is used to generate a special input wave for the shaking table. To implement the IDCS algorithm, the model matching method and the H method are adopted to construct the controller. A numerical example is presented to illustrate the open-loop IDCS algorithm and compare the performance of different methods of controller design. A series of full-scale substructure shaking table tests are conducted in E-Defense to verify the effectiveness of the proposed method and examine the seismic behavior of furniture. The test results demonstrate that the rubber-and-mass system is capable of amplifying the table motion by a factor of about 3.5 for the maximum velocity and displacement, and the substructure shaking table test can reproduce the large floor responses for a few minutes ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] A substructure shaking table test for reproduction of earthquake responses of high-rise buildings [texte imprimé] / Ji, Xiaodong, Auteur ; Kajiwara, Kouichi, Auteur ; Nagae, Takuya, Auteur ; Ryuta Enokida ; Nakashima, Masayoshi . - pp. 1381-1399. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 12 (Octobre 2009) . - pp. 1381-1399 Mots-clés : Shaking  table  test;  Substructure;  IDCS  algorithm;  Model  matching  method;  H  method;  high-rise  building Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : When subjected to long-period ground motions, high-rise buildings' upper floors undergo large responses. Furniture and nonstructural components are susceptible to significant damage in such events. This paper proposes a full-scale substructure shaking table test to reproduce large floor responses of high-rise buildings. The response at the top floor of a virtual 30-story building model subjected to a synthesized long-period ground motion is taken as a target wave for reproduction. Since a shaking table has difficulties in directly reproducing such large responses due to various capacity limitations, a rubber-and-mass system is proposed to amplify the table motion. To achieve an accurate reproduction of the floor responses, a control algorithm called the open-loop inverse dynamics compensation via simulation (IDCS) algorithm is used to generate a special input wave for the shaking table. To implement the IDCS algorithm, the model matching method and the H method are adopted to construct the controller. A numerical example is presented to illustrate the open-loop IDCS algorithm and compare the performance of different methods of controller design. A series of full-scale substructure shaking table tests are conducted in E-Defense to verify the effectiveness of the proposed method and examine the seismic behavior of furniture. The test results demonstrate that the rubber-and-mass system is capable of amplifying the table motion by a factor of about 3.5 for the maximum velocity and displacement, and the substructure shaking table test can reproduce the large floor responses for a few minutes ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe